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<button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <nav class="pagination is-small is-centered breathe-horizontal" role="navigation" aria-label="pagination"> <a href="" class="pagination-previous is-invisible">Previous </a> <a href="/search/?searchtype=author&query=Owens%2C+J+F&start=50" class="pagination-next" >Next </a> <ul class="pagination-list"> <li> <a href="/search/?searchtype=author&query=Owens%2C+J+F&start=0" class="pagination-link is-current" aria-label="Goto page 1">1 </a> </li> <li> <a href="/search/?searchtype=author&query=Owens%2C+J+F&start=50" class="pagination-link " aria-label="Page 2" aria-current="page">2 </a> </li> </ul> </nav> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2501.06849">arXiv:2501.06849</a> <span> [<a href="https://arxiv.org/pdf/2501.06849">pdf</a>, <a href="https://arxiv.org/format/2501.06849">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> </div> <p class="title is-5 mathjax"> Systematic uncertainties from higher-twist corrections in DIS at large $x$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Cerutti%2C+M">Matteo Cerutti</a>, <a href="/search/hep-ph?searchtype=author&query=Accardi%2C+A">Alberto Accardi</a>, <a href="/search/hep-ph?searchtype=author&query=Fernando%2C+I+P">Ishara P. Fernando</a>, <a href="/search/hep-ph?searchtype=author&query=Li%2C+S">Shujie Li</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">Joseph F. Owens</a>, <a href="/search/hep-ph?searchtype=author&query=Park%2C+S">Sanghwa Park</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2501.06849v1-abstract-short" style="display: inline;"> We investigate the systematic uncertainties and potential biases arising from the inclusion of large-$x$ corrections to proton and deuteron DIS data in global QCD analyses. Using the CTEQ-JLab framework, we examine various approaches to implementing higher-twist corrections in nucleon structure functions and off-shell PDF modifications in deuteron targets. We analyze how these components interact… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.06849v1-abstract-full').style.display = 'inline'; document.getElementById('2501.06849v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2501.06849v1-abstract-full" style="display: none;"> We investigate the systematic uncertainties and potential biases arising from the inclusion of large-$x$ corrections to proton and deuteron DIS data in global QCD analyses. Using the CTEQ-JLab framework, we examine various approaches to implementing higher-twist corrections in nucleon structure functions and off-shell PDF modifications in deuteron targets. We analyze how these components interact and influence the determination of the $d$-quark PDF and the neutron structure function at large $x$. We find that it is very important to consider isospin-dependent higher-twist corrections in order to minimize implementation biases in the extracted quantities. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2501.06849v1-abstract-full').style.display = 'none'; document.getElementById('2501.06849v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 January, 2025; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2025. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> JLAB-THY-25-7 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2309.16851">arXiv:2309.16851</a> <span> [<a href="https://arxiv.org/pdf/2309.16851">pdf</a>, <a href="https://arxiv.org/format/2309.16851">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.109.074036">10.1103/PhysRevD.109.074036 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Extraction of the neutron F2 structure function from inclusive proton and deuteron deep-inelastic scattering data </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Li%2C+S">Shujie Li</a>, <a href="/search/hep-ph?searchtype=author&query=Accardi%2C+A">Alberto Accardi</a>, <a href="/search/hep-ph?searchtype=author&query=Cerutti%2C+M">Matteo Cerutti</a>, <a href="/search/hep-ph?searchtype=author&query=Fernando%2C+I+P">Ishara. P. Fernando</a>, <a href="/search/hep-ph?searchtype=author&query=Keppel%2C+C+E">Cynthia E. Keppel</a>, <a href="/search/hep-ph?searchtype=author&query=Melnitchouk%2C+W">Wally Melnitchouk</a>, <a href="/search/hep-ph?searchtype=author&query=Monaghan%2C+P">Peter Monaghan</a>, <a href="/search/hep-ph?searchtype=author&query=Niculescu%2C+G">Gabriel Niculescu</a>, <a href="/search/hep-ph?searchtype=author&query=Niculescu%2C+M+I">Maria I. Niculescu</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">Jeff. F. Owens</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2309.16851v3-abstract-short" style="display: inline;"> The available world deep-inelastic scattering data on proton and deuteron structure functions F2p, F2d, and their ratios, are leveraged to extract the free neutron F2n structure function, the F2n/F2p ratio, and associated uncertainties using the latest nuclear effect calculations in the deuteron. Special attention is devoted to the normalization of the proton and deuteron experimental datasets and… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.16851v3-abstract-full').style.display = 'inline'; document.getElementById('2309.16851v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2309.16851v3-abstract-full" style="display: none;"> The available world deep-inelastic scattering data on proton and deuteron structure functions F2p, F2d, and their ratios, are leveraged to extract the free neutron F2n structure function, the F2n/F2p ratio, and associated uncertainties using the latest nuclear effect calculations in the deuteron. Special attention is devoted to the normalization of the proton and deuteron experimental datasets and to the treatment of correlated systematic errors, as well as the quantification of procedural and theoretical uncertainties. The extracted F2n dataset is utilized to evaluate the Q2 dependence of the Gottfried sum rule and the nonsinglet F2p - F2n moments. To facilitate replication of our study, as well as for general applications, a comprehensive DIS database including all recent JLab 6 GeV measurements, the extracted F2n, a modified CTEQ-JLab global PDF fit named CJ15nlo_mod, and grids with calculated proton, neutron and deuteron DIS structure functions at next-to-leading order, are discussed and made publicly available. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2309.16851v3-abstract-full').style.display = 'none'; document.getElementById('2309.16851v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 2 August, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 September, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">55 pages. Database: https://www.jlab.org/theory/cj, https://github.com/JeffersonLab/CJ-database</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> JLAB-THY-23-3907 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2303.11509">arXiv:2303.11509</a> <span> [<a href="https://arxiv.org/pdf/2303.11509">pdf</a>, <a href="https://arxiv.org/format/2303.11509">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.107.113005">10.1103/PhysRevD.107.113005 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Light quark and antiquark constraints from new electroweak data </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Accardi%2C+A">Alberto Accardi</a>, <a href="/search/hep-ph?searchtype=author&query=Jing%2C+X">Xiaoxian Jing</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">Joseph Francis Owens</a>, <a href="/search/hep-ph?searchtype=author&query=Park%2C+S">Sanghwa Park</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2303.11509v1-abstract-short" style="display: inline;"> We present a new parton distribution function analysis which includes new data for W boson production in proton-proton collisions and lepton pair production in proton-proton and proton-deuteron collisions. The new data provide strong constraints on the light antiquark parton distribution functions in the proton. We identify an interesting correlation between the $d/u$ ratio and the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.11509v1-abstract-full').style.display = 'inline'; document.getElementById('2303.11509v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2303.11509v1-abstract-full" style="display: none;"> We present a new parton distribution function analysis which includes new data for W boson production in proton-proton collisions and lepton pair production in proton-proton and proton-deuteron collisions. The new data provide strong constraints on the light antiquark parton distribution functions in the proton. We identify an interesting correlation between the $d/u$ ratio and the $\bar{d}/\bar{u}$ ratio which leads to a modification of our previous results for the $d/u$ ratio as the parton momentum fraction $x \rightarrow 1.$ <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.11509v1-abstract-full').style.display = 'none'; document.getElementById('2303.11509v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 20 March, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> JLAB-THY-23-3782 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2301.07715">arXiv:2301.07715</a> <span> [<a href="https://arxiv.org/pdf/2301.07715">pdf</a>, <a href="https://arxiv.org/format/2301.07715">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.ppnp.2023.104096">10.1016/j.ppnp.2023.104096 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Target mass corrections in lepton--nucleus DIS: theory and applications to nuclear PDFs </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Ruiz%2C+R">R. Ruiz</a>, <a href="/search/hep-ph?searchtype=author&query=Muzakka%2C+K+F">K. F. Muzakka</a>, <a href="/search/hep-ph?searchtype=author&query=Leger%2C+C">C. Leger</a>, <a href="/search/hep-ph?searchtype=author&query=Risse%2C+P">P. Risse</a>, <a href="/search/hep-ph?searchtype=author&query=Accardi%2C+A">A. Accardi</a>, <a href="/search/hep-ph?searchtype=author&query=Duwent%C3%A4ster%2C+P">P. Duwent盲ster</a>, <a href="/search/hep-ph?searchtype=author&query=Hobbs%2C+T+J">T. J. Hobbs</a>, <a href="/search/hep-ph?searchtype=author&query=Je%C5%BEo%2C+T">T. Je啪o</a>, <a href="/search/hep-ph?searchtype=author&query=Keppel%2C+C">C. Keppel</a>, <a href="/search/hep-ph?searchtype=author&query=Klasen%2C+M">M. Klasen</a>, <a href="/search/hep-ph?searchtype=author&query=Kova%C5%99%C3%ADk%2C+K">K. Kova艡铆k</a>, <a href="/search/hep-ph?searchtype=author&query=Kusina%2C+A">A. Kusina</a>, <a href="/search/hep-ph?searchtype=author&query=Morf%C3%ADn%2C+J+G">J. G. Morf铆n</a>, <a href="/search/hep-ph?searchtype=author&query=Olness%2C+F+I">F. I. Olness</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a>, <a href="/search/hep-ph?searchtype=author&query=Schienbein%2C+I">I. Schienbein</a>, <a href="/search/hep-ph?searchtype=author&query=Yu%2C+J+Y">J. Y. Yu</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2301.07715v2-abstract-short" style="display: inline;"> Motivated by the wide range of kinematics covered by current and planned deep-inelastic scattering (DIS) facilities, we revisit the formalism, practical implementation, and numerical impact of target mass corrections (TMCs) for DIS on unpolarized nuclear targets. An important aspect is that we only use nuclear and later partonic degrees of freedom, carefully avoiding a picture of the nucleus in te… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2301.07715v2-abstract-full').style.display = 'inline'; document.getElementById('2301.07715v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2301.07715v2-abstract-full" style="display: none;"> Motivated by the wide range of kinematics covered by current and planned deep-inelastic scattering (DIS) facilities, we revisit the formalism, practical implementation, and numerical impact of target mass corrections (TMCs) for DIS on unpolarized nuclear targets. An important aspect is that we only use nuclear and later partonic degrees of freedom, carefully avoiding a picture of the nucleus in terms of nucleons. After establishing that formulae used for individual nucleon targets $(p,n)$, derived in the Operator Product Expansion (OPE) formalism, are indeed applicable to nuclear targets, we rewrite expressions for nuclear TMCs in terms of \mbox{re-scaled} (or averaged) kinematic variables. As a consequence, we find a representation for nuclear TMCs that is approximately independent of the nuclear target. We go on to construct a single-parameter fit for all nuclear targets that is in good numerical agreement with full computations of TMCs. We discuss in detail qualitative and quantitative differences between nuclear TMCs built in the OPE and the parton model formalisms, as well as give numerical predictions for current and future facilities. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2301.07715v2-abstract-full').style.display = 'none'; document.getElementById('2301.07715v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 March, 2024; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 18 January, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2023. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">journal version: 96 pages (including two appendices and references), many plots and figures, extended/improved discussions</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> IFJPAN-IV-2022-18, SMU-HEP-22-12, MS-TP-22-49, ANL-180568, FNAL-PUB-23-142-ND </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Prog.Part.Nucl.Phys. 136 (2024) 104096 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2108.05786">arXiv:2108.05786</a> <span> [<a href="https://arxiv.org/pdf/2108.05786">pdf</a>, <a href="https://arxiv.org/format/2108.05786">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> </div> <p class="title is-5 mathjax"> CJ15 global PDF analysis with new electroweak data from the STAR and SeaQuest experiments </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Park%2C+S">Sanghwa Park</a>, <a href="/search/hep-ph?searchtype=author&query=Accardi%2C+A">Alberto Accardi</a>, <a href="/search/hep-ph?searchtype=author&query=Jing%2C+X">Xiaoxian Jing</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2108.05786v1-abstract-short" style="display: inline;"> We present updates to a recent CTEQ-Jefferson Lab (CJ) global analysis of parton distribution functions with a new set of electroweak data that provide unique access to quark flavor separation in the proton. In particular, recent $W$ and $Z$ boson measurements from the STAR experiment at RHIC put additional constraints on light quarks and antiquarks near the valence regime. The new measurement of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2108.05786v1-abstract-full').style.display = 'inline'; document.getElementById('2108.05786v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2108.05786v1-abstract-full" style="display: none;"> We present updates to a recent CTEQ-Jefferson Lab (CJ) global analysis of parton distribution functions with a new set of electroweak data that provide unique access to quark flavor separation in the proton. In particular, recent $W$ and $Z$ boson measurements from the STAR experiment at RHIC put additional constraints on light quarks and antiquarks near the valence regime. The new measurement of the Drell-Yan lepton pair production ratio in $p+p$ and $p+d$ collisions by the SeaQuest experiment at Fermilab extends the large-$x$ coverage of the previous E866 experiment and sheds new light on the light antiquarks distribution. In this report, the impact of these new data sets on parton distribution functions will be presented with emphasis given to the flavor asymmetry of the light antiquark sea at large values of the parton momentum $x$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2108.05786v1-abstract-full').style.display = 'none'; document.getElementById('2108.05786v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 August, 2021; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2021. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> JLAB-THY-21-3465 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2007.15081">arXiv:2007.15081</a> <span> [<a href="https://arxiv.org/pdf/2007.15081">pdf</a>, <a href="https://arxiv.org/format/2007.15081">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1140/epja/s10050-021-00564-y">10.1140/epja/s10050-021-00564-y <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> An experimental program with high duty-cycle polarized and unpolarized positron beams at Jefferson Lab </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Accardi%2C+A">A. Accardi</a>, <a href="/search/hep-ph?searchtype=author&query=Afanasev%2C+A">A. Afanasev</a>, <a href="/search/hep-ph?searchtype=author&query=Albayrak%2C+I">I. Albayrak</a>, <a href="/search/hep-ph?searchtype=author&query=Ali%2C+S+F">S. F. Ali</a>, <a href="/search/hep-ph?searchtype=author&query=Amaryan%2C+M">M. Amaryan</a>, <a href="/search/hep-ph?searchtype=author&query=Annand%2C+J+R+M">J. R. M. Annand</a>, <a href="/search/hep-ph?searchtype=author&query=Arrington%2C+J">J. Arrington</a>, <a href="/search/hep-ph?searchtype=author&query=Asaturyan%2C+A">A. Asaturyan</a>, <a href="/search/hep-ph?searchtype=author&query=Atac%2C+H">H. Atac</a>, <a href="/search/hep-ph?searchtype=author&query=Avakian%2C+H">H. Avakian</a>, <a href="/search/hep-ph?searchtype=author&query=Averett%2C+T">T. Averett</a>, <a href="/search/hep-ph?searchtype=author&query=Gayoso%2C+C+A">C. Ayerbe Gayoso</a>, <a href="/search/hep-ph?searchtype=author&query=Bai%2C+X">X. Bai</a>, <a href="/search/hep-ph?searchtype=author&query=Barion%2C+L">L. Barion</a>, <a href="/search/hep-ph?searchtype=author&query=Battaglieri%2C+M">M. Battaglieri</a>, <a href="/search/hep-ph?searchtype=author&query=Bellini%2C+V">V. Bellini</a>, <a href="/search/hep-ph?searchtype=author&query=Beminiwattha%2C+R">R. Beminiwattha</a>, <a href="/search/hep-ph?searchtype=author&query=Benmokhtar%2C+F">F. Benmokhtar</a>, <a href="/search/hep-ph?searchtype=author&query=Berdnikov%2C+V+V">V. V. Berdnikov</a>, <a href="/search/hep-ph?searchtype=author&query=Bernauer%2C+J+C">J. C. Bernauer</a>, <a href="/search/hep-ph?searchtype=author&query=Bertone%2C+V">V. Bertone</a>, <a href="/search/hep-ph?searchtype=author&query=Bianconi%2C+A">A. Bianconi</a>, <a href="/search/hep-ph?searchtype=author&query=Biselli%2C+A">A. Biselli</a>, <a href="/search/hep-ph?searchtype=author&query=Bisio%2C+P">P. Bisio</a>, <a href="/search/hep-ph?searchtype=author&query=Blunden%2C+P">P. Blunden</a> , et al. (205 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="2007.15081v2-abstract-short" style="display: inline;"> Positron beams, both polarized and unpolarized, are identified as essential ingredients for the experimental programs at the next generation of lepton accelerators. In the context of the hadronic physics program at Jefferson Lab (JLab), positron beams are complementary, even essential, tools for a precise understanding of the electromagnetic structure of nucleons and nuclei, in both the elastic an… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.15081v2-abstract-full').style.display = 'inline'; document.getElementById('2007.15081v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2007.15081v2-abstract-full" style="display: none;"> Positron beams, both polarized and unpolarized, are identified as essential ingredients for the experimental programs at the next generation of lepton accelerators. In the context of the hadronic physics program at Jefferson Lab (JLab), positron beams are complementary, even essential, tools for a precise understanding of the electromagnetic structure of nucleons and nuclei, in both the elastic and deep-inelastic regimes. For instance, elastic scattering of polarized and unpolarized electrons and positrons from the nucleon enables a model independent determination of its electromagnetic form factors. Also, the deeply-virtual scattering of polarized and unpolarized electrons and positrons allows unambiguous separation of the different contributions to the cross section of the lepto-production of photons and of lepton-pairs, enabling an accurate determination of the nucleons and nuclei generalized parton distributions, and providing an access to the gravitational form factors. Furthermore, positron beams offer the possibility of alternative tests of the Standard Model of particle physics through the search of a dark photon, the precise measurement of electroweak couplings, and the investigation of charged lepton flavor violation. This document discusses the perspectives of an experimental program with high duty-cycle positron beams at JLab. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2007.15081v2-abstract-full').style.display = 'none'; document.getElementById('2007.15081v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 May, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 July, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2020. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">18 pages, 7 figures This version superseeds the previous version which scientific content was decomposed into several more elaborated articles. All of these articles will be collected in the EPJ A Topical Issue about "Positron beam and physics at Jefferson Lab (e+@Jlab)"</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1910.02931">arXiv:1910.02931</a> <span> [<a href="https://arxiv.org/pdf/1910.02931">pdf</a>, <a href="https://arxiv.org/format/1910.02931">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> </div> <p class="title is-5 mathjax"> On the shape of the $\bar d-\bar u$ asymmetry </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Accardi%2C+A">A. Accardi</a>, <a href="/search/hep-ph?searchtype=author&query=Keppel%2C+C+E">C. E. Keppel</a>, <a href="/search/hep-ph?searchtype=author&query=Li%2C+S">S. Li</a>, <a href="/search/hep-ph?searchtype=author&query=Melnitchouk%2C+W">W. Melnitchouk</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1910.02931v1-abstract-short" style="display: inline;"> Using data from a recent reanalysis of neutron structure functions extracted from inclusive proton and deuteron deep-inelastic scattering (DIS), we re-examine the constraints on the shape of the $\bar d-\bar u$ asymmetry in the proton at large parton momentum fractions $x$. A global analysis of the proton-neutron structure function difference from BCDMS, NMC, SLAC and Jefferson Lab DIS measurement… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1910.02931v1-abstract-full').style.display = 'inline'; document.getElementById('1910.02931v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1910.02931v1-abstract-full" style="display: none;"> Using data from a recent reanalysis of neutron structure functions extracted from inclusive proton and deuteron deep-inelastic scattering (DIS), we re-examine the constraints on the shape of the $\bar d-\bar u$ asymmetry in the proton at large parton momentum fractions $x$. A global analysis of the proton-neutron structure function difference from BCDMS, NMC, SLAC and Jefferson Lab DIS measurements, and of Fermilab Drell-Yan lepton-pair production cross sections, suggests that existing data can be well described with $\bar d > \bar u$ for all values of $x$ currently accessible. We compare the shape of the fitted $\bar d-\bar u$ distributions with expectations from nonperturbative models based on chiral symmetry breaking, which can be tested by upcoming Drell-Yan data from the SeaQuest experiment at larger values of $x$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1910.02931v1-abstract-full').style.display = 'none'; document.getElementById('1910.02931v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 7 October, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">17 pages, 6 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> JLAB-THY-19-3053 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Lett. B 801, 135143 (2020) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1909.00452">arXiv:1909.00452</a> <span> [<a href="https://arxiv.org/pdf/1909.00452">pdf</a>, <a href="https://arxiv.org/format/1909.00452">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> </div> <p class="title is-5 mathjax"> nCTEQ PDFs at the LHC: Vector boson production in heavy ion collisions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=The+nCTEQ+Collaboration"> The nCTEQ Collaboration</a>, <a href="/search/hep-ph?searchtype=author&query=Clark%2C+D+B">D. B. Clark</a>, <a href="/search/hep-ph?searchtype=author&query=Godat%2C+E">E. Godat</a>, <a href="/search/hep-ph?searchtype=author&query=Hobbs%2C+T+J">T. J. Hobbs</a>, <a href="/search/hep-ph?searchtype=author&query=Je%C5%BEo%2C+T">T. Je啪o</a>, <a href="/search/hep-ph?searchtype=author&query=Kent%2C+J">J. Kent</a>, <a href="/search/hep-ph?searchtype=author&query=Keppel%2C+C">C. Keppel</a>, <a href="/search/hep-ph?searchtype=author&query=Klasen%2C+M">M. Klasen</a>, <a href="/search/hep-ph?searchtype=author&query=Kovar%C3%ADk%2C+K">K. Kovar铆k</a>, <a href="/search/hep-ph?searchtype=author&query=Kusina%2C+A">A. Kusina</a>, <a href="/search/hep-ph?searchtype=author&query=Lyonnet%2C+F">F. Lyonnet</a>, <a href="/search/hep-ph?searchtype=author&query=Morfin%2C+J+G">J. G. Morfin</a>, <a href="/search/hep-ph?searchtype=author&query=Olness%2C+F+I">F. I. Olness</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a>, <a href="/search/hep-ph?searchtype=author&query=Schienbein%2C+I">I. Schienbein</a>, <a href="/search/hep-ph?searchtype=author&query=Yu%2C+J+Y">J. Y. Yu</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1909.00452v1-abstract-short" style="display: inline;"> Extraction of the strange quark PDF is a long-standing puzzle. We use the nCTEQ nPDFs with uncertainties to study the impact of the LHC W/Z production data on both the flavor differentiation and nuclear corrections; this complements the information from neutrino-DIS data. As the proton flavor determination is dependent on nuclear corrections (from heavy target DIS, for example), LHC heavy ion meas… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1909.00452v1-abstract-full').style.display = 'inline'; document.getElementById('1909.00452v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1909.00452v1-abstract-full" style="display: none;"> Extraction of the strange quark PDF is a long-standing puzzle. We use the nCTEQ nPDFs with uncertainties to study the impact of the LHC W/Z production data on both the flavor differentiation and nuclear corrections; this complements the information from neutrino-DIS data. As the proton flavor determination is dependent on nuclear corrections (from heavy target DIS, for example), LHC heavy ion measurements can also help improve proton PDFs. We introduce a new implementation of the nCTEQ code (nCTEQ++) based on C++ which has a modular strucure and enables us to easily integrate programs such as HOPPET, APPLgrid, and MCFM. Using ApplGrids generated from MCFM, we use nCTEQ++ to perform a preliminary fit including the pPb LHC W/Z vector boson data. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1909.00452v1-abstract-full').style.display = 'none'; document.getElementById('1909.00452v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 1 September, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2019. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">6 pages, 4 figures. DIS2019 Workshop, Torino, Italy</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1808.07514">arXiv:1808.07514</a> <span> [<a href="https://arxiv.org/pdf/1808.07514">pdf</a>, <a href="https://arxiv.org/format/1808.07514">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> </div> <p class="title is-5 mathjax"> PDF Flavor Determination and the nCTEQ PDFs </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=nCTEQ+Collaboration"> nCTEQ Collaboration</a>, <a href="/search/hep-ph?searchtype=author&query=Godat%2C+E">E. Godat</a>, <a href="/search/hep-ph?searchtype=author&query=Clark%2C+D+B">D. B. Clark</a>, <a href="/search/hep-ph?searchtype=author&query=Hobbs%2C+T+J">T. J. Hobbs</a>, <a href="/search/hep-ph?searchtype=author&query=Jezo%2C+T">T. Jezo</a>, <a href="/search/hep-ph?searchtype=author&query=Kent%2C+J">J. Kent</a>, <a href="/search/hep-ph?searchtype=author&query=Keppel%2C+C">C. Keppel</a>, <a href="/search/hep-ph?searchtype=author&query=Kovarik%2C+K">K. Kovarik</a>, <a href="/search/hep-ph?searchtype=author&query=Kusina%2C+A">A. Kusina</a>, <a href="/search/hep-ph?searchtype=author&query=Lyonnet%2C+F">F. Lyonnet</a>, <a href="/search/hep-ph?searchtype=author&query=Morfin%2C+J+G">J. G. Morfin</a>, <a href="/search/hep-ph?searchtype=author&query=Olness%2C+F+I">F. I. Olness</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a>, <a href="/search/hep-ph?searchtype=author&query=Schienbein%2C+I">I. Schienbein</a>, <a href="/search/hep-ph?searchtype=author&query=Yu%2C+J+Y">J. Y. Yu</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1808.07514v1-abstract-short" style="display: inline;"> Recent LHC W/Z vector boson production data in proton-lead collisions are quite sensitive to the heavier flavors (especially the strange PDF), and this complements the information from neutrino-DIS data. As the proton flavor determination is dependent on nuclear corrections (from heavy target DIS, for example), LHC heavy ion measurements can also help improve proton PDFs. We introduce a new implem… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1808.07514v1-abstract-full').style.display = 'inline'; document.getElementById('1808.07514v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1808.07514v1-abstract-full" style="display: none;"> Recent LHC W/Z vector boson production data in proton-lead collisions are quite sensitive to the heavier flavors (especially the strange PDF), and this complements the information from neutrino-DIS data. As the proton flavor determination is dependent on nuclear corrections (from heavy target DIS, for example), LHC heavy ion measurements can also help improve proton PDFs. We introduce a new implementation of the nCTEQ code (nCTEQ++) based on C++ which has a modular strucure and enables us to easily integrate programs such as HOPPET, APPLgrid, and MCFM. Using ApplGrids generated from MCFM, we use nCTEQ++ to perform a fit including the $pPb$ LHC W/Z vector boson data. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1808.07514v1-abstract-full').style.display = 'none'; document.getElementById('1808.07514v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 22 August, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2018. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">6 pages, 5 figures. DIS2018 Workshop, Kobe, Japan</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1712.08199">arXiv:1712.08199</a> <span> [<a href="https://arxiv.org/pdf/1712.08199">pdf</a>, <a href="https://arxiv.org/format/1712.08199">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> </div> <p class="title is-5 mathjax"> LHC data and its impact on nCTEQ15 PDFs </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Clark%2C+D+B">D. B. Clark</a>, <a href="/search/hep-ph?searchtype=author&query=Godat%2C+E">E. Godat</a>, <a href="/search/hep-ph?searchtype=author&query=Jezo%2C+T">T. Jezo</a>, <a href="/search/hep-ph?searchtype=author&query=Keppel%2C+C">C. Keppel</a>, <a href="/search/hep-ph?searchtype=author&query=Kovarik%2C+K">K. Kovarik</a>, <a href="/search/hep-ph?searchtype=author&query=Kusina%2C+A">A. Kusina</a>, <a href="/search/hep-ph?searchtype=author&query=Lyonnet%2C+F">F. Lyonnet</a>, <a href="/search/hep-ph?searchtype=author&query=Morfin%2C+J+G">J. G. Morfin</a>, <a href="/search/hep-ph?searchtype=author&query=Olness%2C+F+I">F. I. Olness</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a>, <a href="/search/hep-ph?searchtype=author&query=Schienbein%2C+I">I. Schienbein</a>, <a href="/search/hep-ph?searchtype=author&query=Yu%2C+J+Y">J. Y. Yu</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1712.08199v1-abstract-short" style="display: inline;"> The LHC heavy ion data for W/Z production can provide new incisive information on the PDFs. This data is sensitive to the heavier quark flavors (strange and charm) in a high energy kinematic region; this can facilitate the determination of PDFs in the small x region where previous data was limited. At present, the flavor separation of the proton PDFs is dependent on DIS data from nuclear targets.… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1712.08199v1-abstract-full').style.display = 'inline'; document.getElementById('1712.08199v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1712.08199v1-abstract-full" style="display: none;"> The LHC heavy ion data for W/Z production can provide new incisive information on the PDFs. This data is sensitive to the heavier quark flavors (strange and charm) in a high energy kinematic region; this can facilitate the determination of PDFs in the small x region where previous data was limited. At present, the flavor separation of the proton PDFs is dependent on DIS data from nuclear targets. Therefore, improved nuclear corrections can also yield enhanced flavor determination of both the proton and nuclear PDFs. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1712.08199v1-abstract-full').style.display = 'none'; document.getElementById('1712.08199v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 21 December, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">6 pages, 6 figures. 25th International Workshop on Deep-Inelastic Scattering and Related Topics (DIS 2017). PoS(DIS2017)204</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1701.06716">arXiv:1701.06716</a> <span> [<a href="https://arxiv.org/pdf/1701.06716">pdf</a>, <a href="https://arxiv.org/ps/1701.06716">ps</a>, <a href="https://arxiv.org/format/1701.06716">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.95.056024">10.1103/PhysRevD.95.056024 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> An Enhanced Threshold Resummation Formalism for Lepton Pair Production and Its Effects in the Determination of Parton Distribution Functions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Westmark%2C+D">David Westmark</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1701.06716v2-abstract-short" style="display: inline;"> We demonstrate that theoretical predictions using current resummation techniques for the lepton pair production (LPP) rapidity and $x_F$ distributions can be inconsistent with data in high rapidity and $x_F$ kinematic regions by observing their effect in global fits of parton distribution functions (PDFs). We present an enhanced resummation technique for the LPP rapidity and $x_F$ distributions th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1701.06716v2-abstract-full').style.display = 'inline'; document.getElementById('1701.06716v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1701.06716v2-abstract-full" style="display: none;"> We demonstrate that theoretical predictions using current resummation techniques for the lepton pair production (LPP) rapidity and $x_F$ distributions can be inconsistent with data in high rapidity and $x_F$ kinematic regions by observing their effect in global fits of parton distribution functions (PDFs). We present an enhanced resummation technique for the LPP rapidity and $x_F$ distributions that agrees with LPP data. The enhanced resummation method is used in conjunction with threshold resummation in deep inelastic scattering (DIS) to perform two global fits of PDFs using the minimal and Borel prescriptions. The results are analyzed to determine the effect of threshold resummation on global fits of PDFs. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1701.06716v2-abstract-full').style.display = 'none'; document.getElementById('1701.06716v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 February, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 23 January, 2017; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2017. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">19 pages, 5 figures; v2: Corrected references, modified introduction, aesthetic changes, changed document format</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 95, 056024 (2017) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1603.08906">arXiv:1603.08906</a> <span> [<a href="https://arxiv.org/pdf/1603.08906">pdf</a>, <a href="https://arxiv.org/format/1603.08906">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1140/epjc/s10052-016-4285-4">10.1140/epjc/s10052-016-4285-4 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A Critical Appraisal and Evaluation of Modern PDFs </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Accardi%2C+A">A. Accardi</a>, <a href="/search/hep-ph?searchtype=author&query=Alekhin%2C+S">S. Alekhin</a>, <a href="/search/hep-ph?searchtype=author&query=Bl%C3%BCmlein%2C+J">J. Bl眉mlein</a>, <a href="/search/hep-ph?searchtype=author&query=Garzelli%2C+M+V">M. V. Garzelli</a>, <a href="/search/hep-ph?searchtype=author&query=Lipka%2C+K">K. Lipka</a>, <a href="/search/hep-ph?searchtype=author&query=Melnitchouk%2C+W">W. Melnitchouk</a>, <a href="/search/hep-ph?searchtype=author&query=Moch%2C+S">S. Moch</a>, <a href="/search/hep-ph?searchtype=author&query=Placakyte%2C+R">R. Placakyte</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a>, <a href="/search/hep-ph?searchtype=author&query=Reya%2C+E">E. Reya</a>, <a href="/search/hep-ph?searchtype=author&query=Sato%2C+N">N. Sato</a>, <a href="/search/hep-ph?searchtype=author&query=Vogt%2C+A">A. Vogt</a>, <a href="/search/hep-ph?searchtype=author&query=Zenaiev%2C+O">O. Zenaiev</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1603.08906v2-abstract-short" style="display: inline;"> We review the present status of the determination of parton distribution functions (PDFs) in the light of the precision requirements for the LHC in Run 2 and other future hadron colliders. We provide brief reviews of all currently available PDF sets and use them to compute cross sections for a number of benchmark processes, including Higgs boson production in gluon-gluon fusion at the LHC. We show… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1603.08906v2-abstract-full').style.display = 'inline'; document.getElementById('1603.08906v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1603.08906v2-abstract-full" style="display: none;"> We review the present status of the determination of parton distribution functions (PDFs) in the light of the precision requirements for the LHC in Run 2 and other future hadron colliders. We provide brief reviews of all currently available PDF sets and use them to compute cross sections for a number of benchmark processes, including Higgs boson production in gluon-gluon fusion at the LHC. We show that the differences in the predictions obtained with the various PDFs are due to particular theory assumptions made in the fits of those PDFs. We discuss PDF uncertainties in the kinematic region covered by the LHC and on averaging procedures for PDFs, such as advocated by the PDF4LHC15 sets, and provide recommendations for the usage of PDF sets for theory predictions at the LHC. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1603.08906v2-abstract-full').style.display = 'none'; document.getElementById('1603.08906v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 8 August, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 March, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2016. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">70 pages pdflatex, 19 figures, 17 tables; final version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> DESY 16-041, DO-TH 16/05, JLAB-THY-16-2231, LTH 1081 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1602.03154">arXiv:1602.03154</a> <span> [<a href="https://arxiv.org/pdf/1602.03154">pdf</a>, <a href="https://arxiv.org/format/1602.03154">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.93.114017">10.1103/PhysRevD.93.114017 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Constraints on large-$x$ parton distributions from new weak boson production and deep-inelastic scattering data </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Accardi%2C+A">A. Accardi</a>, <a href="/search/hep-ph?searchtype=author&query=Brady%2C+L+T">L. T. Brady</a>, <a href="/search/hep-ph?searchtype=author&query=Melnitchouk%2C+W">W. Melnitchouk</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a>, <a href="/search/hep-ph?searchtype=author&query=Sato%2C+N">N. Sato</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1602.03154v3-abstract-short" style="display: inline;"> We present a new set of leading twist parton distribution functions, referred to as "CJ15", which take advantage of developments in the theoretical treatment of nuclear corrections as well as new data. The analysis includes for the first time data on the free neutron structure function from Jefferson Lab, and new high-precision charged lepton and W-boson asymmetry data from Fermilab. These signifi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1602.03154v3-abstract-full').style.display = 'inline'; document.getElementById('1602.03154v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1602.03154v3-abstract-full" style="display: none;"> We present a new set of leading twist parton distribution functions, referred to as "CJ15", which take advantage of developments in the theoretical treatment of nuclear corrections as well as new data. The analysis includes for the first time data on the free neutron structure function from Jefferson Lab, and new high-precision charged lepton and W-boson asymmetry data from Fermilab. These significantly reduce the uncertainty on the d/u ratio at large values of x and provide new insights into the partonic structure of bound nucleons. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1602.03154v3-abstract-full').style.display = 'none'; document.getElementById('1602.03154v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 May, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 9 February, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2016. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">50 pages, 17 figures, 3 tables. Uncertainty bands revised. LO chi^2 values corrected in Table 1. Version to appear in Phys.Rev.D</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> JLAB-THY-16-2215 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 93, 114017 (2016) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1509.01801">arXiv:1509.01801</a> <span> [<a href="https://arxiv.org/pdf/1509.01801">pdf</a>, <a href="https://arxiv.org/format/1509.01801">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> </div> <p class="title is-5 mathjax"> nCTEQ15 - Global analysis of nuclear parton distributions with uncertainties </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Kusina%2C+A">A. Kusina</a>, <a href="/search/hep-ph?searchtype=author&query=Kovarik%2C+K">K. Kovarik</a>, <a href="/search/hep-ph?searchtype=author&query=Jezo%2C+T">T. Jezo</a>, <a href="/search/hep-ph?searchtype=author&query=Clark%2C+D+B">D. B. Clark</a>, <a href="/search/hep-ph?searchtype=author&query=Keppel%2C+C">C. Keppel</a>, <a href="/search/hep-ph?searchtype=author&query=Lyonnet%2C+F">F. Lyonnet</a>, <a href="/search/hep-ph?searchtype=author&query=Morfin%2C+J+G">J. G. Morfin</a>, <a href="/search/hep-ph?searchtype=author&query=Olness%2C+F+I">F. I. Olness</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a>, <a href="/search/hep-ph?searchtype=author&query=Schienbein%2C+I">I. Schienbein</a>, <a href="/search/hep-ph?searchtype=author&query=Yu%2C+J+Y">J. Y. Yu</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1509.01801v1-abstract-short" style="display: inline;"> We present the first official release of the nCTEQ nuclear parton distribution functions with errors. The main addition to the previous nCTEQ PDFs is the introduction of PDF uncertainties based on the Hessian method. Another important addition is the inclusion of pion production data from RHIC that give us a handle on constraining the gluon PDF. This contribution summarizes our results from arXiv:… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1509.01801v1-abstract-full').style.display = 'inline'; document.getElementById('1509.01801v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1509.01801v1-abstract-full" style="display: none;"> We present the first official release of the nCTEQ nuclear parton distribution functions with errors. The main addition to the previous nCTEQ PDFs is the introduction of PDF uncertainties based on the Hessian method. Another important addition is the inclusion of pion production data from RHIC that give us a handle on constraining the gluon PDF. This contribution summarizes our results from arXiv:1509.00792 and concentrates on the comparison with other groups providing nuclear parton distributions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1509.01801v1-abstract-full').style.display = 'none'; document.getElementById('1509.01801v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 6 September, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Presented at the XXIII International Workshop on Deep Inelastic Scattering and Related Subjects, April 27 - May 1, 2015, Southern Methodist University, Dallas, Texas</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LPSC-15-181 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> PoS DIS2015 (2015) 041 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1509.00792">arXiv:1509.00792</a> <span> [<a href="https://arxiv.org/pdf/1509.00792">pdf</a>, <a href="https://arxiv.org/format/1509.00792">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.93.085037">10.1103/PhysRevD.93.085037 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> nCTEQ15 - Global analysis of nuclear parton distributions with uncertainties in the CTEQ framework </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Kovarik%2C+K">K. Kovarik</a>, <a href="/search/hep-ph?searchtype=author&query=Kusina%2C+A">A. Kusina</a>, <a href="/search/hep-ph?searchtype=author&query=Jezo%2C+T">T. Jezo</a>, <a href="/search/hep-ph?searchtype=author&query=Clark%2C+D+B">D. B. Clark</a>, <a href="/search/hep-ph?searchtype=author&query=Keppel%2C+C">C. Keppel</a>, <a href="/search/hep-ph?searchtype=author&query=Lyonnet%2C+F">F. Lyonnet</a>, <a href="/search/hep-ph?searchtype=author&query=Morfin%2C+J+G">J. G. Morfin</a>, <a href="/search/hep-ph?searchtype=author&query=Olness%2C+F+I">F. I. Olness</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a>, <a href="/search/hep-ph?searchtype=author&query=Schienbein%2C+I">I. Schienbein</a>, <a href="/search/hep-ph?searchtype=author&query=Yu%2C+J+Y">J. Y. Yu</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1509.00792v2-abstract-short" style="display: inline;"> We present the new nCTEQ15 set of nuclear parton distribution functions with uncertainties. This fit extends the CTEQ proton PDFs to include the nuclear dependence using data on nuclei all the way up to 208^Pb. The uncertainties are determined using the Hessian method with an optimal rescaling of the eigenvectors to accurately represent the uncertainties for the chosen tolerance criteria. In addit… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1509.00792v2-abstract-full').style.display = 'inline'; document.getElementById('1509.00792v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1509.00792v2-abstract-full" style="display: none;"> We present the new nCTEQ15 set of nuclear parton distribution functions with uncertainties. This fit extends the CTEQ proton PDFs to include the nuclear dependence using data on nuclei all the way up to 208^Pb. The uncertainties are determined using the Hessian method with an optimal rescaling of the eigenvectors to accurately represent the uncertainties for the chosen tolerance criteria. In addition to the Deep Inelastic Scattering (DIS) and Drell-Yan (DY) processes, we also include inclusive pion production data from RHIC to help constrain the nuclear gluon PDF. Furthermore, we investigate the correlation of the data sets with specific nPDF flavor components, and asses the impact of individual experiments. We also provide comparisons of the nCTEQ15 set with recent fits from other groups. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1509.00792v2-abstract-full').style.display = 'none'; document.getElementById('1509.00792v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 15 February, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 2 September, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">35 pages</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LPSC-15-153, MS-TP-15-11, FERMILAB-PUB-15-375-ND-PPD-T </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 93, 085037 (2016) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1310.1089">arXiv:1310.1089</a> <span> [<a href="https://arxiv.org/pdf/1310.1089">pdf</a>, <a href="https://arxiv.org/format/1310.1089">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.89.114020">10.1103/PhysRevD.89.114020 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Bayesian Reweighting for Global Fits </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Sato%2C+N">Nobuo Sato</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a>, <a href="/search/hep-ph?searchtype=author&query=Prosper%2C+H">Harrison Prosper</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1310.1089v1-abstract-short" style="display: inline;"> Two different techniques for adding additional data sets to existing global fits using Bayesian reweighting have been proposed in the literature. The derivation of each reweighting formalism is critically reviewed. A simple example is constructed that conclusively favors one of the two formalisms. The effects of this choice for global fits is discussed. </span> <span class="abstract-full has-text-grey-dark mathjax" id="1310.1089v1-abstract-full" style="display: none;"> Two different techniques for adding additional data sets to existing global fits using Bayesian reweighting have been proposed in the literature. The derivation of each reweighting formalism is critically reviewed. A simple example is constructed that conclusively favors one of the two formalisms. The effects of this choice for global fits is discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1310.1089v1-abstract-full').style.display = 'none'; document.getElementById('1310.1089v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 3 October, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2013. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">11 pages, 2 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 89, 114020 (2014) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1306.6515">arXiv:1306.6515</a> <span> [<a href="https://arxiv.org/pdf/1306.6515">pdf</a>, <a href="https://arxiv.org/format/1306.6515">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/0954-3899/40/9/093102">10.1088/0954-3899/40/9/093102 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Parton momentum and helicity distributions in the nucleon </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Jimenez-Delgado%2C+P">P. Jimenez-Delgado</a>, <a href="/search/hep-ph?searchtype=author&query=Melnitchouk%2C+W">W. Melnitchouk</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1306.6515v3-abstract-short" style="display: inline;"> We review the current status of spin-averaged and spin-dependent parton distribution functions (PDFs) of the nucleon. After presenting the formalism used to fit PDFs in modern global data analyses, we discuss constraints placed on the PDFs by specific data types. We give representative examples of unpolarized and polarized PDFs and their errors, and list open questions in global QCD fitting. Final… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1306.6515v3-abstract-full').style.display = 'inline'; document.getElementById('1306.6515v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1306.6515v3-abstract-full" style="display: none;"> We review the current status of spin-averaged and spin-dependent parton distribution functions (PDFs) of the nucleon. After presenting the formalism used to fit PDFs in modern global data analyses, we discuss constraints placed on the PDFs by specific data types. We give representative examples of unpolarized and polarized PDFs and their errors, and list open questions in global QCD fitting. Finally, we anticipate how future facilities, with fixed-target and collider experiments, may impact our knowledge of PDFs and reduce their uncertainties. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1306.6515v3-abstract-full').style.display = 'none'; document.getElementById('1306.6515v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 29 July, 2013; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 27 June, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2013. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">61 pages, 14 figures, typos corrected, final version of review article to appear in J. Phys. G</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> JLAB-THY-13-1737 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1212.1702">arXiv:1212.1702</a> <span> [<a href="https://arxiv.org/pdf/1212.1702">pdf</a>, <a href="https://arxiv.org/ps/1212.1702">ps</a>, <a href="https://arxiv.org/format/1212.1702">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.87.094012">10.1103/PhysRevD.87.094012 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Global parton distributions with nuclear and finite-Q^2 corrections </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a>, <a href="/search/hep-ph?searchtype=author&query=Accardi%2C+A">A. Accardi</a>, <a href="/search/hep-ph?searchtype=author&query=Melnitchouk%2C+W">W. Melnitchouk</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1212.1702v2-abstract-short" style="display: inline;"> We present three new sets of next-to-leading order parton distribution functions (PDFs) determined by global fits to a wide variety of data for hard scattering processes. The analysis includes target mass and higher twist corrections needed for the description of deep inelastic scattering data at large x and low Q^2, and nuclear corrections for deuterium targets. The PDF sets correspond to three d… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1212.1702v2-abstract-full').style.display = 'inline'; document.getElementById('1212.1702v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1212.1702v2-abstract-full" style="display: none;"> We present three new sets of next-to-leading order parton distribution functions (PDFs) determined by global fits to a wide variety of data for hard scattering processes. The analysis includes target mass and higher twist corrections needed for the description of deep inelastic scattering data at large x and low Q^2, and nuclear corrections for deuterium targets. The PDF sets correspond to three different models for the nuclear effects, and provide a more realistic uncertainty range for the d quark PDF, in particular, compared with previous fits. We describe the PDF error sets for each choice of the nuclear corrections, and provide a user interface for utilizing the distributions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1212.1702v2-abstract-full').style.display = 'none'; document.getElementById('1212.1702v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 April, 2013; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 7 December, 2012; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2012. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">25 pages, 7 figures, 2 tables. Extended discussion of PDF parametrizations and conventions</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> JLAB-THY-13-5 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1111.1145">arXiv:1111.1145</a> <span> [<a href="https://arxiv.org/pdf/1111.1145">pdf</a>, <a href="https://arxiv.org/ps/1111.1145">ps</a>, <a href="https://arxiv.org/format/1111.1145">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> </div> <p class="title is-5 mathjax"> Compatibility of global NPDF analyses of neutrino DIS and charged-lepton DIS data </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Kovarik%2C+K">K. Kovarik</a>, <a href="/search/hep-ph?searchtype=author&query=Schienbein%2C+I">I. Schienbein</a>, <a href="/search/hep-ph?searchtype=author&query=Olness%2C+F+I">F. I. Olness</a>, <a href="/search/hep-ph?searchtype=author&query=Yu%2C+J+Y">J. Y. Yu</a>, <a href="/search/hep-ph?searchtype=author&query=Keppel%2C+C">C. Keppel</a>, <a href="/search/hep-ph?searchtype=author&query=Morfin%2C+J+G">J. G. Morfin</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a>, <a href="/search/hep-ph?searchtype=author&query=Stavreva%2C+T">T. Stavreva</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1111.1145v1-abstract-short" style="display: inline;"> The neutrino deep inelastic scattering (DIS) data is very interesting for global analyses of proton and nuclear parton distribution functions (PDFs) since they provide crucial information on the strange quark distribution in the proton and allow for a better flavor decompositon of the PDFs. In order to use neutrino DIS data in a global analysis of proton PDFs nuclear effects need to be understood.… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1111.1145v1-abstract-full').style.display = 'inline'; document.getElementById('1111.1145v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1111.1145v1-abstract-full" style="display: none;"> The neutrino deep inelastic scattering (DIS) data is very interesting for global analyses of proton and nuclear parton distribution functions (PDFs) since they provide crucial information on the strange quark distribution in the proton and allow for a better flavor decompositon of the PDFs. In order to use neutrino DIS data in a global analysis of proton PDFs nuclear effects need to be understood. We study these effects with the help of nuclear PDFs extracted from global analyses of charged-lepton DIS, Drell-Yan and neutrino DIS data at next-to-leading order in QCD. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1111.1145v1-abstract-full').style.display = 'none'; document.getElementById('1111.1145v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 November, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2011. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Contribution to the XXIst International Europhysics Conference on High Energy Physics, 21-27 July 2011, Grenoble, France</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1110.5398">arXiv:1110.5398</a> <span> [<a href="https://arxiv.org/pdf/1110.5398">pdf</a>, <a href="https://arxiv.org/ps/1110.5398">ps</a>, <a href="https://arxiv.org/format/1110.5398">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP06(2012)019">10.1007/JHEP06(2012)019 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Impact of PDF uncertainties at large x on heavy boson production </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Brady%2C+L+T">L. T. Brady</a>, <a href="/search/hep-ph?searchtype=author&query=Accardi%2C+A">A. Accardi</a>, <a href="/search/hep-ph?searchtype=author&query=Melnitchouk%2C+W">W. Melnitchouk</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1110.5398v2-abstract-short" style="display: inline;"> We explore the sensitivity of W and Z boson production in hadronic collisions to uncertainties in parton distribution functions (PDFs) at large x arising from uncertainties in nuclear corrections when using deuterium data in global QCD fits. The W and Z differential cross sections show increasing influence of nuclear corrections at high boson rapidities, particularly for the d quark, which is dilu… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1110.5398v2-abstract-full').style.display = 'inline'; document.getElementById('1110.5398v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1110.5398v2-abstract-full" style="display: none;"> We explore the sensitivity of W and Z boson production in hadronic collisions to uncertainties in parton distribution functions (PDFs) at large x arising from uncertainties in nuclear corrections when using deuterium data in global QCD fits. The W and Z differential cross sections show increasing influence of nuclear corrections at high boson rapidities, particularly for the d quark, which is diluted somewhat in the decay lepton rapidity distributions. The effects of PDF uncertainties on heavy W' and Z' bosons beyond the Standard Model become progressively more important for larger boson masses or rapidities, both in p-p collisions at the LHC and in p-pbar scattering at the Tevatron. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1110.5398v2-abstract-full').style.display = 'none'; document.getElementById('1110.5398v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 June, 2012; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 24 October, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2011. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">23 pages, 9 figures; to appear in JHEP</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> JLAB-THY-11-1454 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1102.3686">arXiv:1102.3686</a> <span> [<a href="https://arxiv.org/pdf/1102.3686">pdf</a>, <a href="https://arxiv.org/ps/1102.3686">ps</a>, <a href="https://arxiv.org/format/1102.3686">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.84.014008">10.1103/PhysRevD.84.014008 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Uncertainties in determining parton distributions at large x </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Accardi%2C+A">A. Accardi</a>, <a href="/search/hep-ph?searchtype=author&query=Melnitchouk%2C+W">W. Melnitchouk</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a>, <a href="/search/hep-ph?searchtype=author&query=Christy%2C+M+E">M. E. Christy</a>, <a href="/search/hep-ph?searchtype=author&query=Keppel%2C+C+E">C. E. Keppel</a>, <a href="/search/hep-ph?searchtype=author&query=Zhu%2C+L">L. Zhu</a>, <a href="/search/hep-ph?searchtype=author&query=Morfin%2C+J+G">J. G. Morfin</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1102.3686v2-abstract-short" style="display: inline;"> We critically examine uncertainties in parton distribution functions (PDFs) at large x arising from nuclear effects in deuterium F2 structure function data. Within a global PDF analysis, we assess the impact on the PDFs from uncertainties in the deuteron wave function at short distances and nucleon off-shell effects, the use of relativistic kinematics, as well as the use of less a restrictive para… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1102.3686v2-abstract-full').style.display = 'inline'; document.getElementById('1102.3686v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1102.3686v2-abstract-full" style="display: none;"> We critically examine uncertainties in parton distribution functions (PDFs) at large x arising from nuclear effects in deuterium F2 structure function data. Within a global PDF analysis, we assess the impact on the PDFs from uncertainties in the deuteron wave function at short distances and nucleon off-shell effects, the use of relativistic kinematics, as well as the use of less a restrictive parametrization of the d/u ratio. We find that in particular the d-quark and gluon PDFs vary significantly with the choice of nuclear model. We highlight the impact of these uncertainties on the determination of the neutron structure function, and on W boson production and parton luminosity at the Tevatron and the LHC. Finally, we discuss prospects for new measurements sensitive to the d-quark and gluon distributions but insensitive to nuclear corrections. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1102.3686v2-abstract-full').style.display = 'none'; document.getElementById('1102.3686v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 July, 2011; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 17 February, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2011. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">37 pages, 13 figures. Final published version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> JLAB-THY-11-1312 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev.D84:014008,2011 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1012.1178">arXiv:1012.1178</a> <span> [<a href="https://arxiv.org/pdf/1012.1178">pdf</a>, <a href="https://arxiv.org/ps/1012.1178">ps</a>, <a href="https://arxiv.org/format/1012.1178">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/JHEP01(2011)152">10.1007/JHEP01(2011)152 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Probing gluon and heavy-quark nuclear PDFs with photon + heavy quark production in pA collisions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Stavreva%2C+T">T. Stavreva</a>, <a href="/search/hep-ph?searchtype=author&query=Schienbein%2C+I">I. Schienbein</a>, <a href="/search/hep-ph?searchtype=author&query=Arleo%2C+F">F. Arleo</a>, <a href="/search/hep-ph?searchtype=author&query=Kovarik%2C+K">K. Kovarik</a>, <a href="/search/hep-ph?searchtype=author&query=Olness%2C+F">F. Olness</a>, <a href="/search/hep-ph?searchtype=author&query=Yu%2C+J+Y">J. Y. Yu</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1012.1178v2-abstract-short" style="display: inline;"> We present a detailed phenomenological study of direct photon production in association with a heavy-quark jet in pA collisions at the Relativistic Heavy Ion Collider (RHIC) and at the Large Hadron Collider (LHC) at next-to-leading order in QCD. The dominant contribution to the cross-section comes from the gluon--heavy-quark (gQ) initiated subprocess, making 纬+ Q production a process very sensitiv… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1012.1178v2-abstract-full').style.display = 'inline'; document.getElementById('1012.1178v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1012.1178v2-abstract-full" style="display: none;"> We present a detailed phenomenological study of direct photon production in association with a heavy-quark jet in pA collisions at the Relativistic Heavy Ion Collider (RHIC) and at the Large Hadron Collider (LHC) at next-to-leading order in QCD. The dominant contribution to the cross-section comes from the gluon--heavy-quark (gQ) initiated subprocess, making 纬+ Q production a process very sensitive to both the gluon and the heavy-quark parton distribution functions (PDFs). Additionally, the RHIC and LHC experiments are probing complementary kinematic regions in the momentum fraction x_2 carried by the target partons. Thus, the nuclear production ratio R^{纬+Q}_{pA} can provide strong constraints, over a broad x-range, on the poorly determined nuclear parton distribution functions which are extremely important for the interpretation of results in heavy-ion collisions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1012.1178v2-abstract-full').style.display = 'none'; document.getElementById('1012.1178v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 12 January, 2011; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 December, 2010; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2010. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LPSC-10-140, KA-TP-29-2010 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JHEP 1101:152,2011 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1012.0286">arXiv:1012.0286</a> <span> [<a href="https://arxiv.org/pdf/1012.0286">pdf</a>, <a href="https://arxiv.org/ps/1012.0286">ps</a>, <a href="https://arxiv.org/format/1012.0286">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.106.122301">10.1103/PhysRevLett.106.122301 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Nuclear corrections in neutrino-nucleus DIS and their compatibility with global NPDF analyses </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Kovarik%2C+K">K. Kovarik</a>, <a href="/search/hep-ph?searchtype=author&query=Schienbein%2C+I">I. Schienbein</a>, <a href="/search/hep-ph?searchtype=author&query=Olness%2C+F">F. Olness</a>, <a href="/search/hep-ph?searchtype=author&query=Yu%2C+J+Y">J. Y. Yu</a>, <a href="/search/hep-ph?searchtype=author&query=Keppel%2C+C">C. Keppel</a>, <a href="/search/hep-ph?searchtype=author&query=Morfin%2C+J+G">J. G. Morfin</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a>, <a href="/search/hep-ph?searchtype=author&query=Stavreva%2C+T">T. Stavreva</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1012.0286v3-abstract-short" style="display: inline;"> We perform a global chi^2-analysis of nuclear parton distribution functions using data from charged current neutrino-nucleus deep-inelastic scattering (DIS), charged-lepton-nucleus DIS, and the Drell-Yan (DY) process. We show that the nuclear corrections in nu-A DIS are not compatible with the predictions derived from l^+A DIS and DY data. We quantify this result using a hypothesis-testing criteri… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1012.0286v3-abstract-full').style.display = 'inline'; document.getElementById('1012.0286v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1012.0286v3-abstract-full" style="display: none;"> We perform a global chi^2-analysis of nuclear parton distribution functions using data from charged current neutrino-nucleus deep-inelastic scattering (DIS), charged-lepton-nucleus DIS, and the Drell-Yan (DY) process. We show that the nuclear corrections in nu-A DIS are not compatible with the predictions derived from l^+A DIS and DY data. We quantify this result using a hypothesis-testing criterion based on the chi^2 distribution which we apply to the total chi^2 as well as to the chi^2 of the individual data sets. We find that it is not possible to accommodate the data from nu-A and l^+A DIS by an acceptable combined fit. Our result has strong implications for the extraction of both nuclear and proton parton distribution functions using combined neutrino and charged-lepton data sets. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1012.0286v3-abstract-full').style.display = 'none'; document.getElementById('1012.0286v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 25 March, 2011; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 1 December, 2010; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2010. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">5 pages</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LPSC 10-157, KA-TP-36-2010 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev.Lett.106:122301,2011 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0911.2254">arXiv:0911.2254</a> <span> [<a href="https://arxiv.org/pdf/0911.2254">pdf</a>, <a href="https://arxiv.org/ps/0911.2254">ps</a>, <a href="https://arxiv.org/format/0911.2254">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.81.034016">10.1103/PhysRevD.81.034016 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> New parton distributions from large-x and low-Q^2 data </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Accardi%2C+A">A. Accardi</a>, <a href="/search/hep-ph?searchtype=author&query=Christy%2C+M+E">M. E. Christy</a>, <a href="/search/hep-ph?searchtype=author&query=Keppel%2C+C+E">C. E. Keppel</a>, <a href="/search/hep-ph?searchtype=author&query=Melnitchouk%2C+W">W. Melnitchouk</a>, <a href="/search/hep-ph?searchtype=author&query=Monaghan%2C+P">P. Monaghan</a>, <a href="/search/hep-ph?searchtype=author&query=Morfin%2C+J+G">J. G. Morfin</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="0911.2254v2-abstract-short" style="display: inline;"> We report results of a new global next-to-leading order fit of parton distribution functions in which cuts on W and Q are relaxed, thereby including more data at high values of x. Effects of target mass corrections (TMCs), higher twist contributions, and nuclear corrections for deuterium data are significant in the large-x region. The leading twist parton distributions are found to be stable to… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0911.2254v2-abstract-full').style.display = 'inline'; document.getElementById('0911.2254v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0911.2254v2-abstract-full" style="display: none;"> We report results of a new global next-to-leading order fit of parton distribution functions in which cuts on W and Q are relaxed, thereby including more data at high values of x. Effects of target mass corrections (TMCs), higher twist contributions, and nuclear corrections for deuterium data are significant in the large-x region. The leading twist parton distributions are found to be stable to TMC model variations as long as higher twist contributions are also included. The behavior of the d quark as x-->1 is particularly sensitive to the deuterium corrections, and using realistic nuclear smearing models the d-quark distribution at large x is found to be softer than in previous fits performed with more restrictive cuts. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0911.2254v2-abstract-full').style.display = 'none'; document.getElementById('0911.2254v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 26 January, 2010; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 11 November, 2009; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> November 2009. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">31 pages, 8 figures. Minor corrections. References added. To appear in Phys.Rev.D</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> JLAB-THY-09-09-1105 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev.D81:034016,2010 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0907.4816">arXiv:0907.4816</a> <span> [<a href="https://arxiv.org/pdf/0907.4816">pdf</a>, <a href="https://arxiv.org/ps/0907.4816">ps</a>, <a href="https://arxiv.org/format/0907.4816">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nuclphysa.2009.10.037">10.1016/j.nuclphysa.2009.10.037 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Gamma-Jet Tomography of Quark-Gluon Plasma in High-Energy Nuclear Collisions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Zhang%2C+H">Hanzhong Zhang</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a>, <a href="/search/hep-ph?searchtype=author&query=Wang%2C+E">Enke Wang</a>, <a href="/search/hep-ph?searchtype=author&query=Wang%2C+X">Xin-Nian Wang</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="0907.4816v2-abstract-short" style="display: inline;"> Within the next-to-leading order (NLO) perturbative QCD (pQCD) parton model, suppression of away-side hadron spectra associated with a high $p_{T}$ photon due to parton energy loss is shown to provide a complete tomographic picture of the dense matter formed in high-energy heavy-ion collisions at RHIC. Dictated by the shape of the $纬$-triggered jet spectrum in NLO pQCD, hadron spectra at large… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0907.4816v2-abstract-full').style.display = 'inline'; document.getElementById('0907.4816v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0907.4816v2-abstract-full" style="display: none;"> Within the next-to-leading order (NLO) perturbative QCD (pQCD) parton model, suppression of away-side hadron spectra associated with a high $p_{T}$ photon due to parton energy loss is shown to provide a complete tomographic picture of the dense matter formed in high-energy heavy-ion collisions at RHIC. Dictated by the shape of the $纬$-triggered jet spectrum in NLO pQCD, hadron spectra at large $z_T=p_T^{h}/p_T^纬 \stackrel{>}{\sim} 1$ are more susceptible to parton energy loss and therefore are dominated by surface emission of $纬$-triggered jets, whereas small $z_{T}$ hadrons mainly come from fragmentation of jets with reduced energy from volume emission. These lead to different centrality dependence of the hadron suppression in different regions of $z_{T}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0907.4816v2-abstract-full').style.display = 'none'; document.getElementById('0907.4816v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 September, 2009; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 27 July, 2009; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2009. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">4 pages, 3 figures, proceedings for QM 2009 conference</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl.Phys.A830:443c-446c,2009 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0907.2357">arXiv:0907.2357</a> <span> [<a href="https://arxiv.org/pdf/0907.2357">pdf</a>, <a href="https://arxiv.org/ps/0907.2357">ps</a>, <a href="https://arxiv.org/format/0907.2357">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.80.094004">10.1103/PhysRevD.80.094004 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> PDF Nuclear Corrections for Charged Lepton and Neutrino Deep Inelastic Scattering Processes </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Schienbein%2C+I">I. Schienbein</a>, <a href="/search/hep-ph?searchtype=author&query=Yu%2C+J+Y">J. Y. Yu</a>, <a href="/search/hep-ph?searchtype=author&query=Kovarik%2C+K">K. Kovarik</a>, <a href="/search/hep-ph?searchtype=author&query=Keppel%2C+C">C. Keppel</a>, <a href="/search/hep-ph?searchtype=author&query=Morfin%2C+J+G">J. G. Morfin</a>, <a href="/search/hep-ph?searchtype=author&query=Olness%2C+F">F. Olness</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="0907.2357v2-abstract-short" style="display: inline;"> We perform a 蠂^2-analysis of Nuclear Parton Distribution Functions (NPDFs) using neutral current charged-lepton Deeply Inelastic Scattering (DIS) and Drell-Yan data for several nuclear targets. The nuclear A dependence of the NPDFs is extracted in a next-to-leading order fit. We compare the nuclear corrections factors F2(Fe)/F2(D) for this charged-lepton data with other results from the literatu… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0907.2357v2-abstract-full').style.display = 'inline'; document.getElementById('0907.2357v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0907.2357v2-abstract-full" style="display: none;"> We perform a 蠂^2-analysis of Nuclear Parton Distribution Functions (NPDFs) using neutral current charged-lepton Deeply Inelastic Scattering (DIS) and Drell-Yan data for several nuclear targets. The nuclear A dependence of the NPDFs is extracted in a next-to-leading order fit. We compare the nuclear corrections factors F2(Fe)/F2(D) for this charged-lepton data with other results from the literature. In particular, we compare and contrast fits based upon the charged-lepton DIS data with those using neutrino-nucleon DIS data. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0907.2357v2-abstract-full').style.display = 'none'; document.getElementById('0907.2357v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 11 February, 2010; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 14 July, 2009; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2009. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">LaTeX, 9 pages, 5 figures; Version 2 contains minor updates to match journal version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LPSC 09-081; SMU-HEP 09-13 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev.D80:094004,2009 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0902.4000">arXiv:0902.4000</a> <span> [<a href="https://arxiv.org/pdf/0902.4000">pdf</a>, <a href="https://arxiv.org/format/0902.4000">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.103.032302">10.1103/PhysRevLett.103.032302 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Tomography of high-energy nuclear collisions with photon-hadron correlations </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Zhang%2C+H">Hanzhong Zhang</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a>, <a href="/search/hep-ph?searchtype=author&query=Wang%2C+E">Enke Wang</a>, <a href="/search/hep-ph?searchtype=author&query=Wang%2C+X">Xin-Nian Wang</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="0902.4000v1-abstract-short" style="display: inline;"> Within the next-to-leading order (NLO) perturbative QCD (pQCD) parton model, suppression of away-side hadron spectra associated with a high $p_{T}$ photon due to parton energy loss is studied in high-energy heavy-ion collisions. Dictated by the shape of the $纬$-associated jet spectrum in NLO pQCD, hadron spectra at large $z_T=p_T^{h}/p_T^纬 \stackrel{>}{\sim} 1$ are more sensitive to parton energ… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0902.4000v1-abstract-full').style.display = 'inline'; document.getElementById('0902.4000v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0902.4000v1-abstract-full" style="display: none;"> Within the next-to-leading order (NLO) perturbative QCD (pQCD) parton model, suppression of away-side hadron spectra associated with a high $p_{T}$ photon due to parton energy loss is studied in high-energy heavy-ion collisions. Dictated by the shape of the $纬$-associated jet spectrum in NLO pQCD, hadron spectra at large $z_T=p_T^{h}/p_T^纬 \stackrel{>}{\sim} 1$ are more sensitive to parton energy loss and therefore are dominated by surface emission of $纬$-associated jets, whereas small $z_{T}$ hadrons mainly come from fragmentation of jets with reduced energy which is controlled by the volume emission. These lead to different centrality dependence of the $纬$-hadron suppression for different values of $z_{T}$. Therefore, a complete measurement of the suppression of $纬$-triggered hadron spectra, including its dependence on the orientation of the $纬$-hadron pair with respect to the reaction plane, allows the extraction of the spatial distribution of jet quenching parameters, achieving a true tomographic study of the quark-gluon plasma in high-energy heavy-ion collisions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0902.4000v1-abstract-full').style.display = 'none'; document.getElementById('0902.4000v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 23 February, 2009; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2009. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">4 pages in ReVTeX, 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev.Lett.103:032302,2009 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0901.3791">arXiv:0901.3791</a> <span> [<a href="https://arxiv.org/pdf/0901.3791">pdf</a>, <a href="https://arxiv.org/ps/0901.3791">ps</a>, <a href="https://arxiv.org/format/0901.3791">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.79.054017">10.1103/PhysRevD.79.054017 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Direct Photon Production in Association With A Heavy Quark At Hadron Colliders </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Stavreva%2C+T+P">T. P. Stavreva</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="0901.3791v1-abstract-short" style="display: inline;"> Results of a next-to-leading order calculation of the inclusive cross section for a photon and a heavy quark (charm or bottom), $p \bar p / pp \to 纬+Q +X$, are presented. Pointlike photon subprocesses through ${\cal O}(伪伪_{s}^2)$ and fragmentation subprocesses through ${\cal O}(伪_{s}^3)$ are included. The calculation is performed using a phase space slicing technique so that the effects of exper… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0901.3791v1-abstract-full').style.display = 'inline'; document.getElementById('0901.3791v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0901.3791v1-abstract-full" style="display: none;"> Results of a next-to-leading order calculation of the inclusive cross section for a photon and a heavy quark (charm or bottom), $p \bar p / pp \to 纬+Q +X$, are presented. Pointlike photon subprocesses through ${\cal O}(伪伪_{s}^2)$ and fragmentation subprocesses through ${\cal O}(伪_{s}^3)$ are included. The calculation is performed using a phase space slicing technique so that the effects of experimental cuts can be included. Results for the ratios of the charm and bottom cross sections are presented and the systematics of the various subprocesses for both the Tevatron and the LHC are compared and contrasted. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0901.3791v1-abstract-full').style.display = 'none'; document.getElementById('0901.3791v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 23 January, 2009; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2009. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">16 pages, 16 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev.D79:054017,2009 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0812.3370">arXiv:0812.3370</a> <span> [<a href="https://arxiv.org/pdf/0812.3370">pdf</a>, <a href="https://arxiv.org/format/0812.3370">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/j.nuclphysbps.2009.03.110">10.1016/j.nuclphysbps.2009.03.110 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Nuclear Parton Distribution Functions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Schienbein%2C+I">I. Schienbein</a>, <a href="/search/hep-ph?searchtype=author&query=Yu%2C+J+Y">J. Y. Yu</a>, <a href="/search/hep-ph?searchtype=author&query=Keppel%2C+C">C. Keppel</a>, <a href="/search/hep-ph?searchtype=author&query=Morfin%2C+J+G">J. G. Morfin</a>, <a href="/search/hep-ph?searchtype=author&query=Olness%2C+F">F. Olness</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="0812.3370v1-abstract-short" style="display: inline;"> We study nuclear effects of charged current deep inelastic neutrino-iron scattering in the framework of a chi^2 analysis of parton distribution functions (PDFs). We extract a set of iron PDFs which are used to compute x_Bj-dependent and Q^2-dependent nuclear correction factors for iron structure functions which are required in global analyses of free nucleon PDFs. We compare our results with nuc… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0812.3370v1-abstract-full').style.display = 'inline'; document.getElementById('0812.3370v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0812.3370v1-abstract-full" style="display: none;"> We study nuclear effects of charged current deep inelastic neutrino-iron scattering in the framework of a chi^2 analysis of parton distribution functions (PDFs). We extract a set of iron PDFs which are used to compute x_Bj-dependent and Q^2-dependent nuclear correction factors for iron structure functions which are required in global analyses of free nucleon PDFs. We compare our results with nuclear correction factors from neutrino-nucleus scattering models and correction factors for charged-lepton--iron scattering. We find that, except for very high x_Bj, our correction factors differ in both shape and magnitude from the correction factors of the models and charged-lepton scattering. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0812.3370v1-abstract-full').style.display = 'none'; document.getElementById('0812.3370v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 17 December, 2008; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2008. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">11 pages, 6 figures, to appear in the proceedings of the Ringberg Workshop "New Trends in HERA Physics 2008"</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl.Phys.Proc.Suppl.191:25-34,2009 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0806.0723">arXiv:0806.0723</a> <span> [<a href="https://arxiv.org/pdf/0806.0723">pdf</a>, <a href="https://arxiv.org/ps/0806.0723">ps</a>, <a href="https://arxiv.org/format/0806.0723">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> </div> <p class="title is-5 mathjax"> Parton distribution function uncertainties & nuclear corrections for the LHC </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Schienbein%2C+I">I. Schienbein</a>, <a href="/search/hep-ph?searchtype=author&query=Yu%2C+J+Y">J. Y. Yu</a>, <a href="/search/hep-ph?searchtype=author&query=Keppel%2C+C">C. Keppel</a>, <a href="/search/hep-ph?searchtype=author&query=Morfin%2C+J+G">J. G. Morfin</a>, <a href="/search/hep-ph?searchtype=author&query=Olness%2C+F+I">Fredrick I. Olness</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="0806.0723v1-abstract-short" style="display: inline;"> We study nuclear effects of charged current deep inelastic neutrino-iron scattering in the framework of a chi^2 analysis of parton distribution functions (PDFs). We extract a set of iron PDFs which are used to compute x_Bj-dependent and Q^2-dependent nuclear correction factors for iron structure functions which are required in global analyses of free nucleon PDFs. We compare our results with nuc… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0806.0723v1-abstract-full').style.display = 'inline'; document.getElementById('0806.0723v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0806.0723v1-abstract-full" style="display: none;"> We study nuclear effects of charged current deep inelastic neutrino-iron scattering in the framework of a chi^2 analysis of parton distribution functions (PDFs). We extract a set of iron PDFs which are used to compute x_Bj-dependent and Q^2-dependent nuclear correction factors for iron structure functions which are required in global analyses of free nucleon PDFs. We compare our results with nuclear correction factors from neutrino-nucleus scattering models and correction factors for charged lepton-iron scattering. We find that, except for very high x_Bj, our correction factors differ in both shape and magnitude from the correction factors of the models and charged-lepton scattering. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0806.0723v1-abstract-full').style.display = 'none'; document.getElementById('0806.0723v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 June, 2008; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 2008. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">4 pages, 2 Figures. Talk given at the XLIIIth Rencontres de Moriond QCD and High Energy Interactions. Talk given at the 16th International Workshop on Deep-Inelastic Scattering (DIS2008)</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-PH-TH-2008-122 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0804.2381">arXiv:0804.2381</a> <span> [<a href="https://arxiv.org/pdf/0804.2381">pdf</a>, <a href="https://arxiv.org/ps/0804.2381">ps</a>, <a href="https://arxiv.org/format/0804.2381">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/0954-3899/35/10/104067">10.1088/0954-3899/35/10/104067 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Punch-through jets in $A+A$ collisions at RHIC/LHC </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Zhang%2C+H">Hanzhong Zhang</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a>, <a href="/search/hep-ph?searchtype=author&query=Wang%2C+E">Enke Wang</a>, <a href="/search/hep-ph?searchtype=author&query=Wang%2C+X+-">X. -N. Wang</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="0804.2381v1-abstract-short" style="display: inline;"> High $p_T$ single and dihadron production is studied within a NLO pQCD parton model with jet quenching in high energy $A+A$ collisions at the RHIC/LHC energy. A simultaneous $蠂^2$-fit to both single and dihadron spectra can be achieved within a narrow range of energy loss parameter. Punch-through jets are found to result in the dihadron suppression factor slightly more sensitive to medium than t… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0804.2381v1-abstract-full').style.display = 'inline'; document.getElementById('0804.2381v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0804.2381v1-abstract-full" style="display: none;"> High $p_T$ single and dihadron production is studied within a NLO pQCD parton model with jet quenching in high energy $A+A$ collisions at the RHIC/LHC energy. A simultaneous $蠂^2$-fit to both single and dihadron spectra can be achieved within a narrow range of energy loss parameter. Punch-through jets are found to result in the dihadron suppression factor slightly more sensitive to medium than the single hadron suppression factor at RHIC. Such jets at LHC are found to dominate high $p_T$ dihadron production and the resulting dihadron spectra are more sensitive to the initial parton distribution functions than the single hadron spectra. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0804.2381v1-abstract-full').style.display = 'none'; document.getElementById('0804.2381v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 15 April, 2008; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2008. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">4 pages, 4 figures, proceedings for the 20th international conference on ultra-relativistic nucleus-nucleus collisions (QM2008), Jaipur, India, February 4-10, 2008</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> J.Phys.G35:104067,2008 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0804.2370">arXiv:0804.2370</a> <span> [<a href="https://arxiv.org/pdf/0804.2370">pdf</a>, <a href="https://arxiv.org/ps/0804.2370">ps</a>, <a href="https://arxiv.org/format/0804.2370">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/0954-3899/34/8/S99">10.1088/0954-3899/34/8/S99 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A NLO analysis on fragility of dihadron tomography in high energy $AA$ collisions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Zhang%2C+H">Hanzhong Zhang</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a>, <a href="/search/hep-ph?searchtype=author&query=Wang%2C+E">Enke Wang</a>, <a href="/search/hep-ph?searchtype=author&query=Wang%2C+X+-">X. -N. Wang</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="0804.2370v1-abstract-short" style="display: inline;"> The dihadron spectra in high energy $AA$ collisions are studied within the NLO pQCD parton model with jet quenching taken into account. The high $p_T$ dihadron spectra are found to be contributed not only by jet pairs close and tangential to the surface of the dense matter but also by punching-through jets survived at the center while the single hadron high $p_T$ spectra are only dominated by su… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0804.2370v1-abstract-full').style.display = 'inline'; document.getElementById('0804.2370v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0804.2370v1-abstract-full" style="display: none;"> The dihadron spectra in high energy $AA$ collisions are studied within the NLO pQCD parton model with jet quenching taken into account. The high $p_T$ dihadron spectra are found to be contributed not only by jet pairs close and tangential to the surface of the dense matter but also by punching-through jets survived at the center while the single hadron high $p_T$ spectra are only dominated by surface emission. Consequently, the suppression factor of such high-$p_T$ hadron pairs is found to be more sensitive to the initial gluon density than the single hadron suppression factor. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0804.2370v1-abstract-full').style.display = 'none'; document.getElementById('0804.2370v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 15 April, 2008; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2008. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">4 pages, 4 figures, proceedings for the 19th international Conference on ultra-relativistic nucleus-nucleus collisions (QM2006), Shanghai, China, November 14-20, 2006</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> J.Phys.G34:S801-S804,2007 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0803.0354">arXiv:0803.0354</a> <span> [<a href="https://arxiv.org/pdf/0803.0354">pdf</a>, <a href="https://arxiv.org/format/0803.0354">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1142/S0217751X09043316">10.1142/S0217751X09043316 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Terascale Physics Opportunities at a High Statistics, High Energy Neutrino Scattering Experiment: NuSOnG </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Adams%2C+T">T. Adams</a>, <a href="/search/hep-ph?searchtype=author&query=Batra%2C+P">P. Batra</a>, <a href="/search/hep-ph?searchtype=author&query=Bugel%2C+L">L. Bugel</a>, <a href="/search/hep-ph?searchtype=author&query=Camilleri%2C+L">L. Camilleri</a>, <a href="/search/hep-ph?searchtype=author&query=Conrad%2C+J+M">J. M. Conrad</a>, <a href="/search/hep-ph?searchtype=author&query=de+Gouvea%2C+A">A. de Gouvea</a>, <a href="/search/hep-ph?searchtype=author&query=Fisher%2C+P+H">P. H. Fisher</a>, <a href="/search/hep-ph?searchtype=author&query=Formaggio%2C+J+A">J. A. Formaggio</a>, <a href="/search/hep-ph?searchtype=author&query=Jenkins%2C+J">J. Jenkins</a>, <a href="/search/hep-ph?searchtype=author&query=Karagiorgi%2C+G">G. Karagiorgi</a>, <a href="/search/hep-ph?searchtype=author&query=Kobilarcik%2C+T+R">T. R. Kobilarcik</a>, <a href="/search/hep-ph?searchtype=author&query=Kopp%2C+S">S. Kopp</a>, <a href="/search/hep-ph?searchtype=author&query=Kyle%2C+G">G. Kyle</a>, <a href="/search/hep-ph?searchtype=author&query=Loinaz%2C+W+A">W. A. Loinaz</a>, <a href="/search/hep-ph?searchtype=author&query=Mason%2C+D+A">D. A. Mason</a>, <a href="/search/hep-ph?searchtype=author&query=Milner%2C+R">R. Milner</a>, <a href="/search/hep-ph?searchtype=author&query=Moore%2C+R">R. Moore</a>, <a href="/search/hep-ph?searchtype=author&query=Morfin%2C+J+G">J. G. Morfin</a>, <a href="/search/hep-ph?searchtype=author&query=Nakamura%2C+M">M. Nakamura</a>, <a href="/search/hep-ph?searchtype=author&query=Naples%2C+D">D. Naples</a>, <a href="/search/hep-ph?searchtype=author&query=Nienaber%2C+P">P. Nienaber</a>, <a href="/search/hep-ph?searchtype=author&query=Olness%2C+F+I">F. I Olness</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a>, <a href="/search/hep-ph?searchtype=author&query=Pate%2C+S+F">S. F. Pate</a>, <a href="/search/hep-ph?searchtype=author&query=Pronin%2C+A">A. Pronin</a> , et al. (11 additional authors not shown) </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="0803.0354v3-abstract-short" style="display: inline;"> This article presents the physics case for a new high-energy, ultra-high statistics neutrino scattering experiment, NuSOnG (Neutrino Scattering on Glass). This experiment uses a Tevatron-based neutrino beam to obtain over an order of magnitude higher statistics than presently available for the purely weak processes $谓_渭+e^- \to 谓_渭+ e^-$ and $谓_渭+ e^- \to 谓_e + 渭^-$. A sample of Deep Inelastic S… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0803.0354v3-abstract-full').style.display = 'inline'; document.getElementById('0803.0354v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0803.0354v3-abstract-full" style="display: none;"> This article presents the physics case for a new high-energy, ultra-high statistics neutrino scattering experiment, NuSOnG (Neutrino Scattering on Glass). This experiment uses a Tevatron-based neutrino beam to obtain over an order of magnitude higher statistics than presently available for the purely weak processes $谓_渭+e^- \to 谓_渭+ e^-$ and $谓_渭+ e^- \to 谓_e + 渭^-$. A sample of Deep Inelastic Scattering events which is over two orders of magnitude larger than past samples will also be obtained. As a result, NuSOnG will be unique among present and planned experiments for its ability to probe neutrino couplings to Beyond the Standard Model physics. Many Beyond Standard Model theories physics predict a rich hierarchy of TeV-scale new states that can correct neutrino cross-sections, through modifications of $Z谓谓$ couplings, tree-level exchanges of new particles such as $Z^\prime$s, or through loop-level oblique corrections to gauge boson propagators. These corrections are generic in theories of extra dimensions, extended gauge symmetries, supersymmetry, and more. The sensitivity of NuSOnG to this new physics extends beyond 5 TeV mass scales. This article reviews these physics opportunities. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0803.0354v3-abstract-full').style.display = 'none'; document.getElementById('0803.0354v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 30 September, 2009; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 3 March, 2008; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2008. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">35 pages, 20 figures, additional citations in v2</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Int.J.Mod.Phys.A24:671-717,2009 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0710.4897">arXiv:0710.4897</a> <span> [<a href="https://arxiv.org/pdf/0710.4897">pdf</a>, <a href="https://arxiv.org/ps/0710.4897">ps</a>, <a href="https://arxiv.org/format/0710.4897">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.77.054013">10.1103/PhysRevD.77.054013 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Nuclear PDFs from neutrino deep inelastic scattering </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Schienbein%2C+I">I. Schienbein</a>, <a href="/search/hep-ph?searchtype=author&query=Yu%2C+J+Y">J. Y. Yu</a>, <a href="/search/hep-ph?searchtype=author&query=Keppel%2C+C">C. Keppel</a>, <a href="/search/hep-ph?searchtype=author&query=Morfin%2C+J+G">J. G. Morfin</a>, <a href="/search/hep-ph?searchtype=author&query=Olness%2C+F+I">Fredrick I. Olness</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="0710.4897v2-abstract-short" style="display: inline;"> We study nuclear effects in charged current deep inelastic neutrino-iron scattering in the frame-work of a chi^2 analysis of parton distribution functions. We extract a set of iron PDFs and show that under reasonable assumptions it is possible to constrain the valence, light sea and strange quark distributions. Our iron PDFs are used to compute x_{Bj}-dependent and Q^2-dependent nuclear correcti… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0710.4897v2-abstract-full').style.display = 'inline'; document.getElementById('0710.4897v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0710.4897v2-abstract-full" style="display: none;"> We study nuclear effects in charged current deep inelastic neutrino-iron scattering in the frame-work of a chi^2 analysis of parton distribution functions. We extract a set of iron PDFs and show that under reasonable assumptions it is possible to constrain the valence, light sea and strange quark distributions. Our iron PDFs are used to compute x_{Bj}-dependent and Q^2-dependent nuclear correction factors for iron structure functions which are required in global analyses of free nucleon PDFs. We compare our results with nuclear correction factors from neutrino-nucleus scattering models and correction factors for charged lepton-iron scattering. We find that, except for very high x_{Bj}, our correction factors differ in both shape and magnitude from the correction factors of the models and charged-lepton scattering. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0710.4897v2-abstract-full').style.display = 'none'; document.getElementById('0710.4897v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 1 April, 2008; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 25 October, 2007; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2007. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">25 pages, 10 figures; minor updates to match published version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LPSC 07-45, CERN-PH-TH-2007-199 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev.D77:054013,2008 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/hep-ph/0702159">arXiv:hep-ph/0702159</a> <span> [<a href="https://arxiv.org/pdf/hep-ph/0702159">pdf</a>, <a href="https://arxiv.org/ps/hep-ph/0702159">ps</a>, <a href="https://arxiv.org/format/hep-ph/0702159">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.75.054030">10.1103/PhysRevD.75.054030 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The impact of new neutrino DIS and Drell-Yan data on large-x parton distributions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a>, <a href="/search/hep-ph?searchtype=author&query=Huston%2C+J">J. Huston</a>, <a href="/search/hep-ph?searchtype=author&query=Keppel%2C+C+E">C. E. Keppel</a>, <a href="/search/hep-ph?searchtype=author&query=Kuhlmann%2C+S">S. Kuhlmann</a>, <a href="/search/hep-ph?searchtype=author&query=Morfin%2C+J+G">J. G. Morfin</a>, <a href="/search/hep-ph?searchtype=author&query=Olness%2C+F">F. Olness</a>, <a href="/search/hep-ph?searchtype=author&query=Pumplin%2C+J">J. Pumplin</a>, <a href="/search/hep-ph?searchtype=author&query=Stump%2C+D">D. Stump</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="hep-ph/0702159v1-abstract-short" style="display: inline;"> New data sets have recently become available for neutrino and antineutrino deep inelastic scattering on nuclear targets and for inclusive dimuon production in pp pd interactions. These data sets are sensitive to different combinations of parton distribution functions in the large-x region and, therefore, provide different constraints when incorporated into global parton distribution function fit… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/0702159v1-abstract-full').style.display = 'inline'; document.getElementById('hep-ph/0702159v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="hep-ph/0702159v1-abstract-full" style="display: none;"> New data sets have recently become available for neutrino and antineutrino deep inelastic scattering on nuclear targets and for inclusive dimuon production in pp pd interactions. These data sets are sensitive to different combinations of parton distribution functions in the large-x region and, therefore, provide different constraints when incorporated into global parton distribution function fits. We compare and contrast the effects of these new data on parton distribution fits, with special emphasis on the effects at large x. The effects of the use of nuclear targets in the neutrino and antineutrino data sets are also investigated. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/0702159v1-abstract-full').style.display = 'none'; document.getElementById('hep-ph/0702159v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 15 February, 2007; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2007. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">24 pages, 13 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> FSUHEP-070215 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev.D75:054030,2007 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/nucl-th/0701045">arXiv:nucl-th/0701045</a> <span> [<a href="https://arxiv.org/pdf/nucl-th/0701045">pdf</a>, <a href="https://arxiv.org/ps/nucl-th/0701045">ps</a>, <a href="https://arxiv.org/format/nucl-th/0701045">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Theory">nucl-th</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevLett.98.212301">10.1103/PhysRevLett.98.212301 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Dihadron Tomography of High-Energy Nuclear Collisions in NLO pQCD </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Zhang%2C+H">Hanzhong Zhang</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a>, <a href="/search/hep-ph?searchtype=author&query=Wang%2C+E">Enke Wang</a>, <a href="/search/hep-ph?searchtype=author&query=Wang%2C+X">Xin-Nian Wang</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="nucl-th/0701045v3-abstract-short" style="display: inline;"> Back-to-back dihadron spectra in high-energy heavy-ion collisions are studied within the next-to-leading order (NLO) perturbative QCD parton model with jet quenching incorporated via modified jet fragmentation functions due to radiative parton energy loss in dense medium. The experimentally observed appearance of back-to-back dihadrons at high $p_T$ is found to originate mainly from jet pairs pr… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('nucl-th/0701045v3-abstract-full').style.display = 'inline'; document.getElementById('nucl-th/0701045v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="nucl-th/0701045v3-abstract-full" style="display: none;"> Back-to-back dihadron spectra in high-energy heavy-ion collisions are studied within the next-to-leading order (NLO) perturbative QCD parton model with jet quenching incorporated via modified jet fragmentation functions due to radiative parton energy loss in dense medium. The experimentally observed appearance of back-to-back dihadrons at high $p_T$ is found to originate mainly from jet pairs produced close and tangential to the surface of the dense matter. However, a substantial fraction of observed high $p_T$ dihadrons also comes from jets produced at the center of the medium after losing finite amount of energy. Consequently, the suppression factor of such high-$p_T$ hadron pairs is found to be more sensitive to the initial gluon density than the single hadron spectra that are dominated by surface emission. A simultaneous $蠂^2$-fit to both the single and dihadron spectra can be achieved within a narrow range of the energy loss parameters $蔚_0=1.6-2.1$ GeV/fm. Because of the flattening of the initial jet production spectra, high $p_T$ dihadrons at the LHC energy are found to be more robust as probes of the dense medium. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('nucl-th/0701045v3-abstract-full').style.display = 'none'; document.getElementById('nucl-th/0701045v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 29 May, 2007; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 17 January, 2007; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2007. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">4 pages in revtex with 5 figures, final version in PRL The numerical tables of the NLO single and dihadron spectra used in this manuscript can be downloaded from ftp://www-nsdth.lbl.gov/pub/xnwang/dihadron/</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> LBNL-62151 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev.Lett.98:212301,2007 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/hep-ph/0312323">arXiv:hep-ph/0312323</a> <span> [<a href="https://arxiv.org/pdf/hep-ph/0312323">pdf</a>, <a href="https://arxiv.org/ps/hep-ph/0312323">ps</a>, <a href="https://arxiv.org/format/hep-ph/0312323">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1140/epjc/s2004-02099-4">10.1140/epjc/s2004-02099-4 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Neutrino Dimuon Production and the Strangeness Asymmetry of the Nucleon </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Olness%2C+F">F. Olness</a>, <a href="/search/hep-ph?searchtype=author&query=Pumplin%2C+J">J. Pumplin</a>, <a href="/search/hep-ph?searchtype=author&query=Stump%2C+D">D. Stump</a>, <a href="/search/hep-ph?searchtype=author&query=Huston%2C+J">J. Huston</a>, <a href="/search/hep-ph?searchtype=author&query=Nadolsky%2C+P">P. Nadolsky</a>, <a href="/search/hep-ph?searchtype=author&query=Lai%2C+H+L">H. L. Lai</a>, <a href="/search/hep-ph?searchtype=author&query=Kretzer%2C+S">S. Kretzer</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a>, <a href="/search/hep-ph?searchtype=author&query=Tung%2C+W+K">W. K. Tung</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="hep-ph/0312323v2-abstract-short" style="display: inline;"> We have performed the first global QCD analysis to include the CCFR and NuTeV dimuon data, which provide direct constraints on the strange and anti-strange parton distributions, $s(x)$ and $\bar{s}(x)$. To explore the strangeness sector, we adopt a general parametrization of the non-perturbative $s(x), \bar{s}(x)$ functions satisfying basic QCD requirements. We find that the strangeness asymmetr… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/0312323v2-abstract-full').style.display = 'inline'; document.getElementById('hep-ph/0312323v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="hep-ph/0312323v2-abstract-full" style="display: none;"> We have performed the first global QCD analysis to include the CCFR and NuTeV dimuon data, which provide direct constraints on the strange and anti-strange parton distributions, $s(x)$ and $\bar{s}(x)$. To explore the strangeness sector, we adopt a general parametrization of the non-perturbative $s(x), \bar{s}(x)$ functions satisfying basic QCD requirements. We find that the strangeness asymmetry, as represented by the momentum integral $[S^{-}]\equiv \int_0^1 x [s(x)-\bar{s}(x)] dx$, is sensitive to the dimuon data provided the theoretical QCD constraints are enforced. We use the Lagrange Multiplier method to probe the quality of the global fit as a function of $[S^-]$ and find $-0.001 < [S^-] < 0.004$. Representative parton distribution sets spanning this range are given. Comparisons with previous work are made. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/0312323v2-abstract-full').style.display = 'none'; document.getElementById('hep-ph/0312323v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 November, 2004; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 22 December, 2003; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 2003. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">23 pages, 4 figures; expanded version for publication</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> MSU-HEP-030701, BNL-NT-03/17, RBRC-329 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Eur.Phys.J.C40:145-156,2005 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/hep-ph/0307352">arXiv:hep-ph/0307352</a> <span> [<a href="https://arxiv.org/pdf/hep-ph/0307352">pdf</a>, <a href="https://arxiv.org/ps/hep-ph/0307352">ps</a>, <a href="https://arxiv.org/format/hep-ph/0307352">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1142/S0217751X04017458">10.1142/S0217751X04017458 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Next-to-next-to-leading-order soft-gluon corrections in direct photon production </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Kidonakis%2C+N">Nikolaos Kidonakis</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="hep-ph/0307352v1-abstract-short" style="display: inline;"> Previous work on soft-gluon resummation for direct photon production is extended to include additional subleading logarithmic terms through O(alpha alpha_s^3) and some representative comparisons are made to experimental results from the E-706 and UA-6 Collaborations. The additional terms are small in magnitude, indicating good convergence properties to the level of accuracy calculated. The scale… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/0307352v1-abstract-full').style.display = 'inline'; document.getElementById('hep-ph/0307352v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="hep-ph/0307352v1-abstract-full" style="display: none;"> Previous work on soft-gluon resummation for direct photon production is extended to include additional subleading logarithmic terms through O(alpha alpha_s^3) and some representative comparisons are made to experimental results from the E-706 and UA-6 Collaborations. The additional terms are small in magnitude, indicating good convergence properties to the level of accuracy calculated. The scale dependence remains much smaller than that of the next-to-leading-order calculation. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/0307352v1-abstract-full').style.display = 'none'; document.getElementById('hep-ph/0307352v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 29 July, 2003; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2003. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">10 pages, 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> Cavendish-HEP-03/15, FSU-HEP-030725 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Int.J.Mod.Phys. A19 (2004) 149-158 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/hep-ph/0303013">arXiv:hep-ph/0303013</a> <span> [<a href="https://arxiv.org/pdf/hep-ph/0303013">pdf</a>, <a href="https://arxiv.org/ps/hep-ph/0303013">ps</a>, <a href="https://arxiv.org/format/hep-ph/0303013">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1088/1126-6708/2003/10/046">10.1088/1126-6708/2003/10/046 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Inclusive Jet Production, Parton Distributions, and the Search for New Physics </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Stump%2C+D">Daniel Stump</a>, <a href="/search/hep-ph?searchtype=author&query=Huston%2C+J">Joey Huston</a>, <a href="/search/hep-ph?searchtype=author&query=Pumplin%2C+J">Jon Pumplin</a>, <a href="/search/hep-ph?searchtype=author&query=Tung%2C+W">Wu-Ki Tung</a>, <a href="/search/hep-ph?searchtype=author&query=Lai%2C+H+L">H. L. Lai</a>, <a href="/search/hep-ph?searchtype=author&query=Kuhlmann%2C+S">Steve Kuhlmann</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="hep-ph/0303013v1-abstract-short" style="display: inline;"> Jet production at the Tevatron probes some of the smallest distance scales currently accessible. A gluon distribution that is enhanced at large x compared to previous determinations provides a better description of the Run 1b jet data from both CDF and D0. However, considerable uncertainty still remains regarding the gluon distribution at high x. In this paper, we examine the effects of this unc… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/0303013v1-abstract-full').style.display = 'inline'; document.getElementById('hep-ph/0303013v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="hep-ph/0303013v1-abstract-full" style="display: none;"> Jet production at the Tevatron probes some of the smallest distance scales currently accessible. A gluon distribution that is enhanced at large x compared to previous determinations provides a better description of the Run 1b jet data from both CDF and D0. However, considerable uncertainty still remains regarding the gluon distribution at high x. In this paper, we examine the effects of this uncertainty, and of the remaining uncertainties in the NLO QCD theory, on jet cross section comparisons to Run 1b data. We also calculate the range of contributions still possible from any new physics. Predictions are also made for the expanded kinematic range expected for the ongoing Run 2 at the Tevatron and for the LHC. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/0303013v1-abstract-full').style.display = 'none'; document.getElementById('hep-ph/0303013v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 3 March, 2003; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2003. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">50 pages, 31 figures, RevTex</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> MSUHEP-030303 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> JHEP 0310 (2003) 046 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/hep-ph/0110036">arXiv:hep-ph/0110036</a> <span> [<a href="https://arxiv.org/pdf/hep-ph/0110036">pdf</a>, <a href="https://arxiv.org/ps/hep-ph/0110036">ps</a>, <a href="https://arxiv.org/format/hep-ph/0110036">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.65.034011">10.1103/PhysRevD.65.034011 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A Next-to-Leading-Order Study of Dihadron Production </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="hep-ph/0110036v2-abstract-short" style="display: inline;"> The production of pairs of hadrons in hadronic collisions is studied using a next-to-leading-order Monte Carlo program based on the phase space slicing technique. Up-to-date fragmentation functions based on fits to LEP data are employed, together with several versions of current parton distribution functions. Good agreement is found with data for the dihadron mass distribution. A comparison is a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/0110036v2-abstract-full').style.display = 'inline'; document.getElementById('hep-ph/0110036v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="hep-ph/0110036v2-abstract-full" style="display: none;"> The production of pairs of hadrons in hadronic collisions is studied using a next-to-leading-order Monte Carlo program based on the phase space slicing technique. Up-to-date fragmentation functions based on fits to LEP data are employed, together with several versions of current parton distribution functions. Good agreement is found with data for the dihadron mass distribution. A comparison is also made with data for the dihadron angular distribution. The scale dependence of the predictions and the dependence on the choices made for the fragmentation and parton distribution functions are also presented. The good agreement between theory and experiment is contrasted to the case for single $蟺^0$ production where significant deviations between theory and experiment have been observed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/0110036v2-abstract-full').style.display = 'none'; document.getElementById('hep-ph/0110036v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 October, 2001; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 2 October, 2001; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2001. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">22 pages, 15 figures; 3 references added, one figure modified for clarity</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> FSU-HEP-100201 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev. D65 (2002) 034011 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/hep-ph/0102128">arXiv:hep-ph/0102128</a> <span> [<a href="https://arxiv.org/pdf/hep-ph/0102128">pdf</a>, <a href="https://arxiv.org/ps/hep-ph/0102128">ps</a>, <a href="https://arxiv.org/format/hep-ph/0102128">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.65.094032">10.1103/PhysRevD.65.094032 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The two cutoff phase space slicing method </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Harris%2C+B+W">B. W. Harris</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="hep-ph/0102128v3-abstract-short" style="display: inline;"> The phase space slicing method of two cutoffs for next-to-leading-order Monte-Carlo style QCD corrections has been applied to many physics processes. The method is intuitive, simple to implement, and relies on a minimum of process dependent information. Although results for specific applications exist in the literature, there is not a full and detailed description of the method. Herein such a de… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/0102128v3-abstract-full').style.display = 'inline'; document.getElementById('hep-ph/0102128v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="hep-ph/0102128v3-abstract-full" style="display: none;"> The phase space slicing method of two cutoffs for next-to-leading-order Monte-Carlo style QCD corrections has been applied to many physics processes. The method is intuitive, simple to implement, and relies on a minimum of process dependent information. Although results for specific applications exist in the literature, there is not a full and detailed description of the method. Herein such a description is provided, along with illustrative examples; details, which have not previously been published, are included so that the method may be applied to additional hard scattering processes. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/0102128v3-abstract-full').style.display = 'none'; document.getElementById('hep-ph/0102128v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 May, 2002; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 February, 2001; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 2001. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">44 pages, 15 figures, uses RevTex4 and epsfig. References added. Published in Physical Review D</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> ANL-HEP-PR-00-044, FSU-HEP-010130 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev. D65 (2002) 094032 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/hep-ph/0007268">arXiv:hep-ph/0007268</a> <span> [<a href="https://arxiv.org/pdf/hep-ph/0007268">pdf</a>, <a href="https://arxiv.org/ps/hep-ph/0007268">ps</a>, <a href="https://arxiv.org/format/hep-ph/0007268">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.63.054019">10.1103/PhysRevD.63.054019 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Effects of Higher-Order Threshold Corrections in High-E_T Jet Production </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Kidonakis%2C+N">Nikolaos Kidonakis</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="hep-ph/0007268v1-abstract-short" style="display: inline;"> Results for higher-order threshold enhancements in high-E_T jet production in hadron-hadron collisions are presented. Expressions are given for the next-to-next-to-leading order (NNLO) threshold corrections to the single-jet inclusive cross section at next-to-leading logarithmic (NLL) accuracy. The corrections are found to be small for the specific choice of E_T/2 for the factorization and renor… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/0007268v1-abstract-full').style.display = 'inline'; document.getElementById('hep-ph/0007268v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="hep-ph/0007268v1-abstract-full" style="display: none;"> Results for higher-order threshold enhancements in high-E_T jet production in hadron-hadron collisions are presented. Expressions are given for the next-to-next-to-leading order (NNLO) threshold corrections to the single-jet inclusive cross section at next-to-leading logarithmic (NLL) accuracy. The corrections are found to be small for the specific choice of E_T/2 for the factorization and renormalization scales, and the corrected cross section shows a substantial reduction of the scale dependence. A comparison to experimental results from the Tevatron is presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/0007268v1-abstract-full').style.display = 'none'; document.getElementById('hep-ph/0007268v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 24 July, 2000; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2000. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">24 pages LaTeX, 5 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> FSU-HEP-20000720 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev. D63 (2001) 054019 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/hep-ph/0007141">arXiv:hep-ph/0007141</a> <span> [<a href="https://arxiv.org/pdf/hep-ph/0007141">pdf</a>, <a href="https://arxiv.org/ps/hep-ph/0007141">ps</a>, <a href="https://arxiv.org/format/hep-ph/0007141">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> </div> <p class="title is-5 mathjax"> Parton Densitites at High-x </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Kuhlmann%2C+S">S. Kuhlmann</a>, <a href="/search/hep-ph?searchtype=author&query=Huston%2C+J">J. Huston</a>, <a href="/search/hep-ph?searchtype=author&query=Morfin%2C+J">J. Morfin</a>, <a href="/search/hep-ph?searchtype=author&query=Olness%2C+F">F. Olness</a>, <a href="/search/hep-ph?searchtype=author&query=Pumplin%2C+J">J. Pumplin</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a>, <a href="/search/hep-ph?searchtype=author&query=Tung%2C+W+K">W. K. Tung</a>, <a href="/search/hep-ph?searchtype=author&query=Whitmore%2C+J+J">J. J. Whitmore</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="hep-ph/0007141v1-abstract-short" style="display: inline;"> Reliable knowledge of parton distributions at large x is crucial for many searches for new physics signals in the next generation of collider experiments. Although these are generally well determined in the small and medium x range, it has been shown that their uncertainty grows rapidly for x>0.1. We examine the status of the distributions in light of new questions that have been raised about "l… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/0007141v1-abstract-full').style.display = 'inline'; document.getElementById('hep-ph/0007141v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="hep-ph/0007141v1-abstract-full" style="display: none;"> Reliable knowledge of parton distributions at large x is crucial for many searches for new physics signals in the next generation of collider experiments. Although these are generally well determined in the small and medium x range, it has been shown that their uncertainty grows rapidly for x>0.1. We examine the status of the distributions in light of new questions that have been raised about "large-x" parton distributions, as well as recent measurements which have improved the parton uncertainties. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/0007141v1-abstract-full').style.display = 'none'; document.getElementById('hep-ph/0007141v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 July, 2000; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2000. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">LaTeX, 5 pages, 2 figures. Invited talk at 8th International Workshop on Deep Inelastic Scattering and QCD (DIS 2000), Liverpool, England, 25-30 Apr 2000</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> SMU-HEP/00-11 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/hep-ph/0007140">arXiv:hep-ph/0007140</a> <span> [<a href="https://arxiv.org/pdf/hep-ph/0007140">pdf</a>, <a href="https://arxiv.org/ps/hep-ph/0007140">ps</a>, <a href="https://arxiv.org/format/hep-ph/0007140">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> </div> <p class="title is-5 mathjax"> Large-x Parton Distributions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Kuhlmann%2C+S">S. Kuhlmann</a>, <a href="/search/hep-ph?searchtype=author&query=Huston%2C+J">J. Huston</a>, <a href="/search/hep-ph?searchtype=author&query=Morfin%2C+J">J. Morfin</a>, <a href="/search/hep-ph?searchtype=author&query=Olness%2C+F">F. Olness</a>, <a href="/search/hep-ph?searchtype=author&query=Pumplin%2C+J">J. Pumplin</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a>, <a href="/search/hep-ph?searchtype=author&query=Tung%2C+W+K">W. K. Tung</a>, <a href="/search/hep-ph?searchtype=author&query=Whitmore%2C+J+J">J. J. Whitmore</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="hep-ph/0007140v1-abstract-short" style="display: inline;"> Reliable knowledge of parton distributions at large x is crucial for many searches for new physics signals in the next generation of collider experiments. Although these are generally well determined in the small and medium x range, it has been shown that their uncertainty grows rapidly for x>0.1. We examine the status of the gluon and quark distributions in light of new questions that have been… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/0007140v1-abstract-full').style.display = 'inline'; document.getElementById('hep-ph/0007140v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="hep-ph/0007140v1-abstract-full" style="display: none;"> Reliable knowledge of parton distributions at large x is crucial for many searches for new physics signals in the next generation of collider experiments. Although these are generally well determined in the small and medium x range, it has been shown that their uncertainty grows rapidly for x>0.1. We examine the status of the gluon and quark distributions in light of new questions that have been raised in the past two years about "large-x" parton distributions, as well as recent measurements which have improved the parton uncertainties. Finally, we provide a status report of the data used in the global analysis, and note some of the open issues where future experiments, including those planned for Jefferson Labs, might contribute. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/0007140v1-abstract-full').style.display = 'none'; document.getElementById('hep-ph/0007140v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 13 July, 2000; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2000. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">LaTeX, 9 pages, 7 figures. Invited talk presented at the ``Workshop on Nucleon Structure in the High x-Bjorken Region (HiX2000),'' Temple University, Philadelphia, Pennsylvania, March 30-April 1, 2000</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> SMU-HEP/00-10 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/hep-ph/9912388">arXiv:hep-ph/9912388</a> <span> [<a href="https://arxiv.org/pdf/hep-ph/9912388">pdf</a>, <a href="https://arxiv.org/ps/hep-ph/9912388">ps</a>, <a href="https://arxiv.org/format/hep-ph/9912388">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.61.094004">10.1103/PhysRevD.61.094004 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Soft-gluon resummation and NNLO corrections for direct photon production </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Kidonakis%2C+N">Nikolaos Kidonakis</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="hep-ph/9912388v1-abstract-short" style="display: inline;"> The resummation of threshold logarithms for direct photon production cross sections in hadronic collisions is presented. The resummation is based on the factorization properties of the cross section and is formulated at next-to-leading logarithmic or higher accuracy. Full analytical and numerical results for the next-to-next-to-leading order expansion of the resummed cross section are given. A s… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/9912388v1-abstract-full').style.display = 'inline'; document.getElementById('hep-ph/9912388v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="hep-ph/9912388v1-abstract-full" style="display: none;"> The resummation of threshold logarithms for direct photon production cross sections in hadronic collisions is presented. The resummation is based on the factorization properties of the cross section and is formulated at next-to-leading logarithmic or higher accuracy. Full analytical and numerical results for the next-to-next-to-leading order expansion of the resummed cross section are given. A substantial reduction of factorization scale dependence is observed. A comparison to experimental results from the E-706 and UA-6 experiments is presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/9912388v1-abstract-full').style.display = 'none'; document.getElementById('hep-ph/9912388v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 December, 1999; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 1999. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">26 pages LaTeX, 8 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> FSU-HEP-991216 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev. D61 (2000) 094004 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/hep-ph/9912283">arXiv:hep-ph/9912283</a> <span> [<a href="https://arxiv.org/pdf/hep-ph/9912283">pdf</a>, <a href="https://arxiv.org/ps/hep-ph/9912283">ps</a>, <a href="https://arxiv.org/format/hep-ph/9912283">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1016/S0370-2693(00)00164-7">10.1016/S0370-2693(00)00164-7 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Large-x Parton Distributions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Kuhlmann%2C+S">S. Kuhlmann</a>, <a href="/search/hep-ph?searchtype=author&query=Huston%2C+J">J. Huston</a>, <a href="/search/hep-ph?searchtype=author&query=Morfin%2C+J">J. Morfin</a>, <a href="/search/hep-ph?searchtype=author&query=Olness%2C+F">F. Olness</a>, <a href="/search/hep-ph?searchtype=author&query=Pumplin%2C+J">J. Pumplin</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a>, <a href="/search/hep-ph?searchtype=author&query=Tung%2C+W+K">W. K. Tung</a>, <a href="/search/hep-ph?searchtype=author&query=Whitmore%2C+J+J">J. J. Whitmore</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="hep-ph/9912283v1-abstract-short" style="display: inline;"> Reliable knowledge of parton distributions at large x is crucial for many searches for new physics signals in the next generation of collider experiments. Although these are generally well determined in the small and medium x range, it has been shown that their uncertainty grows rapidly for x > 0.1. We examine the status of the gluon and quark distributions in light of new questions that have be… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/9912283v1-abstract-full').style.display = 'inline'; document.getElementById('hep-ph/9912283v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="hep-ph/9912283v1-abstract-full" style="display: none;"> Reliable knowledge of parton distributions at large x is crucial for many searches for new physics signals in the next generation of collider experiments. Although these are generally well determined in the small and medium x range, it has been shown that their uncertainty grows rapidly for x > 0.1. We examine the status of the gluon and quark distributions in light of new questions that have been raised in the past two years about large-x parton distributions, as well as recent measurements which have improved the parton uncertainties. We perform several specific global fits to answer the outstanding questions, and to investigate the potential of future experiments, particularly at HERA, which may provide critical constraints on parton distributions at large x. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/9912283v1-abstract-full').style.display = 'none'; document.getElementById('hep-ph/9912283v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 9 December, 1999; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 1999. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">11 pages, 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Lett. B476 (2000) 291-296 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/hep-ph/9903282">arXiv:hep-ph/9903282</a> <span> [<a href="https://arxiv.org/pdf/hep-ph/9903282">pdf</a>, <a href="https://arxiv.org/ps/hep-ph/9903282">ps</a>, <a href="https://arxiv.org/format/hep-ph/9903282">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1007/s100529900196">10.1007/s100529900196 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Global QCD Analysis of Parton Structure of the Nucleon: CTEQ5 Parton Distributions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Lai%2C+H+L">H. L. Lai</a>, <a href="/search/hep-ph?searchtype=author&query=Huston%2C+J">J. Huston</a>, <a href="/search/hep-ph?searchtype=author&query=Kuhlmann%2C+S">S. Kuhlmann</a>, <a href="/search/hep-ph?searchtype=author&query=Morfin%2C+J">J. Morfin</a>, <a href="/search/hep-ph?searchtype=author&query=Olness%2C+F">F. Olness</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a>, <a href="/search/hep-ph?searchtype=author&query=Pumplin%2C+J">J. Pumplin</a>, <a href="/search/hep-ph?searchtype=author&query=Tung%2C+W+K">W. K. Tung</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="hep-ph/9903282v3-abstract-short" style="display: inline;"> An up-to-date global QCD analysis of high energy lepton-hadron and hadron-hadron interactions is performed to better determine the gluon and quark parton distributions in the nucleon. Improved experimental data on inclusive jet production, in conjunction with precise deep inelastic scattering data, place good constraints on the gluon over a wide range of x; while new data on asymmetries in Drell… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/9903282v3-abstract-full').style.display = 'inline'; document.getElementById('hep-ph/9903282v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="hep-ph/9903282v3-abstract-full" style="display: none;"> An up-to-date global QCD analysis of high energy lepton-hadron and hadron-hadron interactions is performed to better determine the gluon and quark parton distributions in the nucleon. Improved experimental data on inclusive jet production, in conjunction with precise deep inelastic scattering data, place good constraints on the gluon over a wide range of x; while new data on asymmetries in Drell-Yan processes contribute to better determine the d/u ratio. Comparisons with results of other recent global analyses are made, and the differences are described. Open issues and the general problem of determining the uncertainties of parton distributions are discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/9903282v3-abstract-full').style.display = 'none'; document.getElementById('hep-ph/9903282v3-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 5 August, 1999; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 March, 1999; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 1999. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">18 pages in 2up format, 21 figures; This is the version to appear in publication (to appear in Eur. Phys. J. C): minor text modifications; some figures improved in quality; note added in proof concerning QCD evolution added</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> MSU-HEP/903100 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Eur.Phys.J.C12:375-392,2000 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/hep-ph/9801444">arXiv:hep-ph/9801444</a> <span> [<a href="https://arxiv.org/pdf/hep-ph/9801444">pdf</a>, <a href="https://arxiv.org/ps/hep-ph/9801444">ps</a>, <a href="https://arxiv.org/format/hep-ph/9801444">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.58.114034">10.1103/PhysRevD.58.114034 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Study of the Uncertainty of the Gluon Distribution </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Huston%2C+J">J. Huston</a>, <a href="/search/hep-ph?searchtype=author&query=Kuhlmann%2C+S">S. Kuhlmann</a>, <a href="/search/hep-ph?searchtype=author&query=Lai%2C+H+L">H. L. Lai</a>, <a href="/search/hep-ph?searchtype=author&query=Olness%2C+F">F. Olness</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a>, <a href="/search/hep-ph?searchtype=author&query=Soper%2C+D+E">D. E. Soper</a>, <a href="/search/hep-ph?searchtype=author&query=Tung%2C+W+K">W. K. Tung</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="hep-ph/9801444v2-abstract-short" style="display: inline;"> The uncertainty in the calculation of many important new processes at the Tevatron and LHC is dominated by that concerning the gluon distribution function. We investigate the uncertainty in the gluon distribution of the proton by systematically varying the gluon parameters in the global QCD analysis of parton distributions. The results depend critically on the parton momentum fraction x and the… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/9801444v2-abstract-full').style.display = 'inline'; document.getElementById('hep-ph/9801444v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="hep-ph/9801444v2-abstract-full" style="display: none;"> The uncertainty in the calculation of many important new processes at the Tevatron and LHC is dominated by that concerning the gluon distribution function. We investigate the uncertainty in the gluon distribution of the proton by systematically varying the gluon parameters in the global QCD analysis of parton distributions. The results depend critically on the parton momentum fraction x and the QCD scale Q^2. The uncertainties are presented for integrated gluon-gluon and gluon-quark luminosities for both the Tevatron and LHC as a function of sqrt(tau)=sqrt(x1x2)=sqrt(shat/s), the most relevant quantity for new particle production. The uncertainties are reasonably small, except for large x. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/9801444v2-abstract-full').style.display = 'none'; document.getElementById('hep-ph/9801444v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 June, 1998; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 29 January, 1998; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 1998. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">Modified version for publication</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. D 58, 114034 (1998) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/hep-ph/9712299">arXiv:hep-ph/9712299</a> <span> [<a href="https://arxiv.org/pdf/hep-ph/9712299">pdf</a>, <a href="https://arxiv.org/ps/hep-ph/9712299">ps</a>, <a href="https://arxiv.org/format/hep-ph/9712299">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.57.5555">10.1103/PhysRevD.57.5555 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Jet photoproduction and the structure of the photon </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Harris%2C+B+W">B. W. Harris</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="hep-ph/9712299v2-abstract-short" style="display: inline;"> Various jet observables in photoproduction are studied and compared to data from HERA. The feasibility of using a dijet sample for constraining the parton distributions in the photon is then studied. For the current data the experimental and theoretical uncertainties are comparable to the variation due to changing the photon parton distribution set. </span> <span class="abstract-full has-text-grey-dark mathjax" id="hep-ph/9712299v2-abstract-full" style="display: none;"> Various jet observables in photoproduction are studied and compared to data from HERA. The feasibility of using a dijet sample for constraining the parton distributions in the photon is then studied. For the current data the experimental and theoretical uncertainties are comparable to the variation due to changing the photon parton distribution set. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/9712299v2-abstract-full').style.display = 'none'; document.getElementById('hep-ph/9712299v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 January, 1998; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 8 December, 1997; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 1997. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">20 pages including 11 figures. Latex using revtex and psfig macros. Several references added. Submitted to Phys. Rev. D</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> FSU-HEP-971020 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev. D57 (1998) 5555-5561 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/hep-ph/9704324">arXiv:hep-ph/9704324</a> <span> [<a href="https://arxiv.org/pdf/hep-ph/9704324">pdf</a>, <a href="https://arxiv.org/ps/hep-ph/9704324">ps</a>, <a href="https://arxiv.org/format/hep-ph/9704324">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="High Energy Physics - Phenomenology">hep-ph</span> </div> <div class="is-inline-block" style="margin-left: 0.5rem"> <div class="tags has-addons"> <span class="tag is-dark is-size-7">doi</span> <span class="tag is-light is-size-7"><a class="" href="https://doi.org/10.1103/PhysRevD.56.4007">10.1103/PhysRevD.56.4007 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Photoproduction of jets at HERA in next-to-leading order QCD </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/hep-ph?searchtype=author&query=Harris%2C+B+W">B. W. Harris</a>, <a href="/search/hep-ph?searchtype=author&query=Owens%2C+J+F">J. F. Owens</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="hep-ph/9704324v2-abstract-short" style="display: inline;"> A new next-to-leading order Monte Carlo program for the calculation of jet cross sections in photoproduction is described. The contributions from both resolved and direct components are included to O(伪伪_s^2). Properties of the predictions for various inclusive jet and dijet observables are discussed and comparisons with HERA data are presented. </span> <span class="abstract-full has-text-grey-dark mathjax" id="hep-ph/9704324v2-abstract-full" style="display: none;"> A new next-to-leading order Monte Carlo program for the calculation of jet cross sections in photoproduction is described. The contributions from both resolved and direct components are included to O(伪伪_s^2). Properties of the predictions for various inclusive jet and dijet observables are discussed and comparisons with HERA data are presented. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('hep-ph/9704324v2-abstract-full').style.display = 'none'; document.getElementById('hep-ph/9704324v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 June, 1997; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 14 April, 1997; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 1997. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">16 pages, Latex, uses Revtex and psfig macros. References added. Discussion of dijet production extended. Submitted to Phys. Rev. D</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> FSU-HEP-970411 </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev.D56:4007-4016,1997 </p> </li> </ol> <nav class="pagination is-small is-centered breathe-horizontal" role="navigation" aria-label="pagination"> <a href="" class="pagination-previous is-invisible">Previous </a> <a href="/search/?searchtype=author&query=Owens%2C+J+F&start=50" class="pagination-next" >Next </a> <ul class="pagination-list"> <li> <a href="/search/?searchtype=author&query=Owens%2C+J+F&start=0" class="pagination-link is-current" aria-label="Goto page 1">1 </a> </li> <li> <a href="/search/?searchtype=author&query=Owens%2C+J+F&start=50" class="pagination-link " aria-label="Page 2" aria-current="page">2 </a> </li> </ul> </nav> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a 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