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</div> <div class="control"> <button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <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/2303.12196">arXiv:2303.12196</a> <span> [<a href="https://arxiv.org/pdf/2303.12196">pdf</a>, <a href="https://arxiv.org/format/2303.12196">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 Experiment">nucl-ex</span> </div> </div> <p class="title is-5 mathjax"> Non-forward radiative corrections to electron-carbon scattering </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Mihovilovi%C4%8D%2C+M">M. Mihovilovi膷</a>, <a href="/search/nucl-ex?searchtype=author&query=Weber%2C+A+B">A. B. Weber</a>, <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">P. Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Bajec%2C+M">M. Bajec</a>, <a href="/search/nucl-ex?searchtype=author&query=Beranek%2C+T">T. Beranek</a>, <a href="/search/nucl-ex?searchtype=author&query=Beri%C4%8Di%C4%8D%2C+J">J. Beri膷i膷</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernauer%2C+J+C">J. C. Bernauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6hm%2C+R">R. B枚hm</a>, <a href="/search/nucl-ex?searchtype=author&query=Cardinali%2C+M">M. Cardinali</a>, <a href="/search/nucl-ex?searchtype=author&query=Correa%2C+L">L. Correa</a>, <a href="/search/nucl-ex?searchtype=author&query=Debenjak%2C+L">L. Debenjak</a>, <a href="/search/nucl-ex?searchtype=author&query=Denig%2C+A">A. Denig</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">M. O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Esser%2C+A">A. Esser</a>, <a href="/search/nucl-ex?searchtype=author&query=Bondy%2C+M+I+F">M. I. Feretti Bondy</a>, <a href="/search/nucl-ex?searchtype=author&query=Fonvieille%2C+H">H. Fonvieille</a>, <a href="/search/nucl-ex?searchtype=author&query=Friedrich%2C+J+M">J. M. Friedrich</a>, <a href="/search/nucl-ex?searchtype=author&query=Fri%C5%A1%C4%8Di%C4%87%2C+I">I. Fri拧膷i膰</a>, <a href="/search/nucl-ex?searchtype=author&query=Griffioen%2C+K">K. Griffioen</a>, <a href="/search/nucl-ex?searchtype=author&query=Hoek%2C+M">M. Hoek</a>, <a href="/search/nucl-ex?searchtype=author&query=Kegel%2C+S">S. Kegel</a>, <a href="/search/nucl-ex?searchtype=author&query=Middleton%2C+D+G">D. G. Middleton</a>, <a href="/search/nucl-ex?searchtype=author&query=Merkel%2C+H">H. Merkel</a>, <a href="/search/nucl-ex?searchtype=author&query=M%C3%BCller%2C+U">U. M眉ller</a> , et al. (15 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="2303.12196v1-abstract-short" style="display: inline;"> Radiative corrections to elastic scattering represent an important part of the interpretation of electron-induced nuclear reactions at small energy transfers, where they make for a dominant part of background. Here we present and validate a new event generator for mimicking QED radiative processes in electron-carbon scattering that exactly calculates the coherent sum of the Bethe-Heitler amplitude… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.12196v1-abstract-full').style.display = 'inline'; document.getElementById('2303.12196v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2303.12196v1-abstract-full" style="display: none;"> Radiative corrections to elastic scattering represent an important part of the interpretation of electron-induced nuclear reactions at small energy transfers, where they make for a dominant part of background. Here we present and validate a new event generator for mimicking QED radiative processes in electron-carbon scattering that exactly calculates the coherent sum of the Bethe-Heitler amplitudes for the leading diagrams and can be reliably employed for a more robust determination of inelastic cross-sections. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2303.12196v1-abstract-full').style.display = 'none'; document.getElementById('2303.12196v1-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 March, 2023; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2023. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/2008.08958">arXiv:2008.08958</a> <span> [<a href="https://arxiv.org/pdf/2008.08958">pdf</a>, <a href="https://arxiv.org/ps/2008.08958">ps</a>, <a href="https://arxiv.org/format/2008.08958">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 - 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/PhysRevC.103.025205">10.1103/PhysRevC.103.025205 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the Generalized Polarizabilities of the Proton at Intermediate $Q^2$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Fonvieille%2C+H">H. Fonvieille</a>, <a href="/search/nucl-ex?searchtype=author&query=Beri%C4%8Di%C4%8D%2C+J">J. Beri膷i膷</a>, <a href="/search/nucl-ex?searchtype=author&query=Correa%2C+L">L. Correa</a>, <a href="/search/nucl-ex?searchtype=author&query=Benali%2C+M">M. Benali</a>, <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">P. Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Gayoso%2C+C+A">C. Ayerbe Gayoso</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernauer%2C+J+C">J. C. Bernauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Blomberg%2C+A">A. Blomberg</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6hm%2C+R">R. B枚hm</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/nucl-ex?searchtype=author&query=Debenjak%2C+L">L. Debenjak</a>, <a href="/search/nucl-ex?searchtype=author&query=Denig%2C+A">A. Denig</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">M. O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Downie%2C+E+J">E. J. Downie</a>, <a href="/search/nucl-ex?searchtype=author&query=Esser%2C+A">A. Esser</a>, <a href="/search/nucl-ex?searchtype=author&query=Fri%C5%A1%C4%8Di%C4%87%2C+I">I. Fri拧膷i膰</a>, <a href="/search/nucl-ex?searchtype=author&query=Kegel%2C+S">S. Kegel</a>, <a href="/search/nucl-ex?searchtype=author&query=Kohl%2C+Y">Y. Kohl</a>, <a href="/search/nucl-ex?searchtype=author&query=Makek%2C+M">M. Makek</a>, <a href="/search/nucl-ex?searchtype=author&query=Merkel%2C+H">H. Merkel</a>, <a href="/search/nucl-ex?searchtype=author&query=Middleton%2C+D+G">D. G. Middleton</a>, <a href="/search/nucl-ex?searchtype=author&query=Mihovilovi%C4%8D%2C+M">M. Mihovilovi膷</a>, <a href="/search/nucl-ex?searchtype=author&query=M%C3%BCller%2C+U">U. M眉ller</a>, <a href="/search/nucl-ex?searchtype=author&query=Nungesser%2C+L">L. Nungesser</a>, <a href="/search/nucl-ex?searchtype=author&query=Paolone%2C+M">M. Paolone</a> , et al. (13 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="2008.08958v4-abstract-short" style="display: inline;"> Background: Generalized polarizabilities (GPs) are important observables to describe the nucleon structure, and measurements of these observables are still scarce. Purpose: This paper presents details of a virtual Compton scattering (VCS) experiment, performed at the A1 setup at the Mainz Microtron by studying the $e p \to e p 纬$ reaction. The article focuses on selected aspects of the analysis. M… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2008.08958v4-abstract-full').style.display = 'inline'; document.getElementById('2008.08958v4-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="2008.08958v4-abstract-full" style="display: none;"> Background: Generalized polarizabilities (GPs) are important observables to describe the nucleon structure, and measurements of these observables are still scarce. Purpose: This paper presents details of a virtual Compton scattering (VCS) experiment, performed at the A1 setup at the Mainz Microtron by studying the $e p \to e p 纬$ reaction. The article focuses on selected aspects of the analysis. Method: The experiment extracted the $P_{LL} -P_{TT} / 蔚$ and $P_{LT}$ structure functions, as well as the electric and magnetic GPs of the proton, at three new values of the four-momentum transfer squared $Q^2$: 0.10, 0.20 and 0.45 GeV$^2$. Results: We emphasize the importance of the calibration of experimental parameters. The behavior of the measured $e p \to e p 纬$ cross section is presented and compared to the theory. A detailed investigation of the polarizability fits reveals part of their complexity, in connection with the higher-order terms of the low-energy expansion. Conclusions: The presented aspects are elements which contribute to minimize the systematic uncertainties and improve the precision of the physics results. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('2008.08958v4-abstract-full').style.display = 'none'; document.getElementById('2008.08958v4-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, 2021; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 20 August, 2020; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 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">16 pages, 15 figures, Version 4, regular article to appear in Phys.Rev.C, more final version of some figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 103, 025205 (2021) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1907.09954">arXiv:1907.09954</a> <span> [<a href="https://arxiv.org/pdf/1907.09954">pdf</a>, <a href="https://arxiv.org/ps/1907.09954">ps</a>, <a href="https://arxiv.org/format/1907.09954">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> </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.123.192302">10.1103/PhysRevLett.123.192302 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> New Insight in the $Q^2$-Dependence of Proton Generalized Polarizabilities </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Beri%C4%8Di%C4%8D%2C+J">J. Beri膷i膷</a>, <a href="/search/nucl-ex?searchtype=author&query=Correa%2C+L">L. Correa</a>, <a href="/search/nucl-ex?searchtype=author&query=Benali%2C+M">M. Benali</a>, <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">P. Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Gayoso%2C+C+A">C. Ayerbe Gayoso</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernauer%2C+J+C">J. C. Bernauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Blomberg%2C+A">A. Blomberg</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6hm%2C+R">R. B枚hm</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/nucl-ex?searchtype=author&query=Debenjak%2C+L">L. Debenjak</a>, <a href="/search/nucl-ex?searchtype=author&query=Denig%2C+A">A. Denig</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">M. O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Downie%2C+E+J">E. J. Downie</a>, <a href="/search/nucl-ex?searchtype=author&query=Esser%2C+A">A. Esser</a>, <a href="/search/nucl-ex?searchtype=author&query=Fonvieille%2C+H">H. Fonvieille</a>, <a href="/search/nucl-ex?searchtype=author&query=Fri%C5%A1%C4%8Di%C4%87%2C+I">I. Fri拧膷i膰</a>, <a href="/search/nucl-ex?searchtype=author&query=Kegel%2C+S">S. Kegel</a>, <a href="/search/nucl-ex?searchtype=author&query=Kohl%2C+Y">Y. Kohl</a>, <a href="/search/nucl-ex?searchtype=author&query=Makek%2C+M">M. Makek</a>, <a href="/search/nucl-ex?searchtype=author&query=Merkel%2C+H">H. Merkel</a>, <a href="/search/nucl-ex?searchtype=author&query=Middleton%2C+D+G">D. G. Middleton</a>, <a href="/search/nucl-ex?searchtype=author&query=Mihovilovi%C4%8D%2C+M">M. Mihovilovi膷</a>, <a href="/search/nucl-ex?searchtype=author&query=M%C3%BCller%2C+U">U. M眉ller</a>, <a href="/search/nucl-ex?searchtype=author&query=Nungesser%2C+L">L. Nungesser</a>, <a href="/search/nucl-ex?searchtype=author&query=Paolone%2C+M">M. Paolone</a> , et al. (13 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="1907.09954v2-abstract-short" style="display: inline;"> Virtual Compton scattering on the proton has been investigated at three yet unexplored values of the four-momentum transfer $Q^2$: 0.10, 0.20 and 0.45 GeV$^2$, at the Mainz Microtron. Fits performed using either the low-energy theorem or dispersion relations allowed the extraction of the structure functions $P_{LL} -P_{TT} / 蔚$ and $P_{LT}$, as well as the electric and magnetic generalized polariz… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1907.09954v2-abstract-full').style.display = 'inline'; document.getElementById('1907.09954v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1907.09954v2-abstract-full" style="display: none;"> Virtual Compton scattering on the proton has been investigated at three yet unexplored values of the four-momentum transfer $Q^2$: 0.10, 0.20 and 0.45 GeV$^2$, at the Mainz Microtron. Fits performed using either the low-energy theorem or dispersion relations allowed the extraction of the structure functions $P_{LL} -P_{TT} / 蔚$ and $P_{LT}$, as well as the electric and magnetic generalized polarizabilities $伪_{E1}(Q^2)$ and $尾_{M1}(Q^2)$. These new results show a smooth and rapid fall-off of $伪_{E1}(Q^2)$, in contrast to previous measurements at $Q^2$ = 0.33 GeV$^2$, and provide for the first time a precise mapping of $尾_{M1}(Q^2)$ in the low-$Q^2$ region. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1907.09954v2-abstract-full').style.display = 'none'; document.getElementById('1907.09954v2-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 October, 2019; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 23 July, 2019; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 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">5 pages, 1 figure .eps. Version accepted by PRL</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 123, 192302 (2019) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1612.06707">arXiv:1612.06707</a> <span> [<a href="https://arxiv.org/pdf/1612.06707">pdf</a>, <a href="https://arxiv.org/format/1612.06707">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> </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.physletb.2017.05.031">10.1016/j.physletb.2017.05.031 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> First measurement of proton's charge form factor at very low $Q^2$ with initial state radiation </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Mihovilovi%C4%8D%2C+M">M. Mihovilovi膷</a>, <a href="/search/nucl-ex?searchtype=author&query=Weber%2C+A+B">A. B. Weber</a>, <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">P. Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Beranek%2C+T">T. Beranek</a>, <a href="/search/nucl-ex?searchtype=author&query=Beri%C4%8Di%C4%8D%2C+J">J. Beri膷i膷</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernauer%2C+J+C">J. C. Bernauer</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6hm%2C+R">R. B枚hm</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/nucl-ex?searchtype=author&query=Cardinali%2C+M">M. Cardinali</a>, <a href="/search/nucl-ex?searchtype=author&query=Correa%2C+L">L. Correa</a>, <a href="/search/nucl-ex?searchtype=author&query=Debenjak%2C+L">L. Debenjak</a>, <a href="/search/nucl-ex?searchtype=author&query=Denig%2C+A">A. Denig</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">M. O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Esser%2C+A">A. Esser</a>, <a href="/search/nucl-ex?searchtype=author&query=Bondy%2C+M+I+F">M. I. Ferretti Bondy</a>, <a href="/search/nucl-ex?searchtype=author&query=Fonvieille%2C+H">H. Fonvieille</a>, <a href="/search/nucl-ex?searchtype=author&query=Friedrich%2C+J+M">J. M. Friedrich</a>, <a href="/search/nucl-ex?searchtype=author&query=Fri%C5%A1%C4%8Di%C4%87%2C+I">I. Fri拧膷i膰</a>, <a href="/search/nucl-ex?searchtype=author&query=Griffioen%2C+K">K. Griffioen</a>, <a href="/search/nucl-ex?searchtype=author&query=Hoek%2C+M">M. Hoek</a>, <a href="/search/nucl-ex?searchtype=author&query=Kegel%2C+S">S. Kegel</a>, <a href="/search/nucl-ex?searchtype=author&query=Kohl%2C+Y">Y. Kohl</a>, <a href="/search/nucl-ex?searchtype=author&query=Merkel%2C+H">H. Merkel</a>, <a href="/search/nucl-ex?searchtype=author&query=Middleton%2C+D+G">D. G. Middleton</a>, <a href="/search/nucl-ex?searchtype=author&query=M%C3%BCller%2C+U">U. M眉ller</a> , et al. (14 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="1612.06707v1-abstract-short" style="display: inline;"> We report on a new experimental method based on initial-state radiation (ISR) in e-p scattering, in which the radiative tail of the elastic e-p peak contains information on the proton charge form factor ($G_E^p$) at extremely small $Q^2$. The ISR technique was validated in a dedicated experiment using the spectrometers of the A1-Collaboration at the Mainz Microtron (MAMI). This provided first meas… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1612.06707v1-abstract-full').style.display = 'inline'; document.getElementById('1612.06707v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1612.06707v1-abstract-full" style="display: none;"> We report on a new experimental method based on initial-state radiation (ISR) in e-p scattering, in which the radiative tail of the elastic e-p peak contains information on the proton charge form factor ($G_E^p$) at extremely small $Q^2$. The ISR technique was validated in a dedicated experiment using the spectrometers of the A1-Collaboration at the Mainz Microtron (MAMI). This provided first measurements of $G_E^p$ for $0.001\leq Q^2\leq 0.004 (GeV/c)^2$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1612.06707v1-abstract-full').style.display = 'none'; document.getElementById('1612.06707v1-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 December, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 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">6 pages, 3 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1505.06106">arXiv:1505.06106</a> <span> [<a href="https://arxiv.org/pdf/1505.06106">pdf</a>, <a href="https://arxiv.org/ps/1505.06106">ps</a>, <a href="https://arxiv.org/format/1505.06106">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> </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/PhysRevC.92.054307">10.1103/PhysRevC.92.054307 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the Beam-Recoil Polarization in Low-Energy Virtual Compton Scattering from the Proton </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Doria%2C+L">L. Doria</a>, <a href="/search/nucl-ex?searchtype=author&query=Janssens%2C+P">P. Janssens</a>, <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">P. Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Gayoso%2C+C+A">C. Ayerbe Gayoso</a>, <a href="/search/nucl-ex?searchtype=author&query=Baumann%2C+D">D. Baumann</a>, <a href="/search/nucl-ex?searchtype=author&query=Bensafa%2C+I">I. Bensafa</a>, <a href="/search/nucl-ex?searchtype=author&query=Benali%2C+M">M. Benali</a>, <a href="/search/nucl-ex?searchtype=author&query=Beri%C4%8Di%C4%8D%2C+J">J. Beri膷i膷</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernauer%2C+J+C">J. C. Bernauer</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6hm%2C+R">R. B枚hm</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/nucl-ex?searchtype=author&query=Correa%2C+L">L. Correa</a>, <a href="/search/nucl-ex?searchtype=author&query=D%27Hose%2C+N">N. D'Hose</a>, <a href="/search/nucl-ex?searchtype=author&query=Defa%C3%BF%2C+X">X. Defa每</a>, <a href="/search/nucl-ex?searchtype=author&query=Ding%2C+M">M. Ding</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">M. O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Fonvieille%2C+H">H. Fonvieille</a>, <a href="/search/nucl-ex?searchtype=author&query=Friedrich%2C+J">J. Friedrich</a>, <a href="/search/nucl-ex?searchtype=author&query=Friedrich%2C+J+M">J. M. Friedrich</a>, <a href="/search/nucl-ex?searchtype=author&query=Laveissi%C3%A8re%2C+G">G. Laveissi猫re</a>, <a href="/search/nucl-ex?searchtype=author&query=Makek%2C+M">M. Makek</a>, <a href="/search/nucl-ex?searchtype=author&query=Marroncle%2C+J">J. Marroncle</a>, <a href="/search/nucl-ex?searchtype=author&query=Merkel%2C+H">H. Merkel</a>, <a href="/search/nucl-ex?searchtype=author&query=Mihovilovi%C4%8D%2C+M">M. Mihovilovi膷</a>, <a href="/search/nucl-ex?searchtype=author&query=M%C3%BCller%2C+U">U. M眉ller</a> , et al. (16 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="1505.06106v1-abstract-short" style="display: inline;"> Double-polarization observables in the reaction $\vec{e}p \rightarrow e'\vec{p'}纬$ have been measured at $Q^2=0.33 (GeV/c)^2$. The experiment was performed at the spectrometer setup of the A1 Collaboration using the 855 MeV polarized electron beam provided by the Mainz Microtron (MAMI) and a recoil proton polarimeter. From the double-polarization observables the structure function $P_{LT}^\perp$ i… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1505.06106v1-abstract-full').style.display = 'inline'; document.getElementById('1505.06106v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1505.06106v1-abstract-full" style="display: none;"> Double-polarization observables in the reaction $\vec{e}p \rightarrow e'\vec{p'}纬$ have been measured at $Q^2=0.33 (GeV/c)^2$. The experiment was performed at the spectrometer setup of the A1 Collaboration using the 855 MeV polarized electron beam provided by the Mainz Microtron (MAMI) and a recoil proton polarimeter. From the double-polarization observables the structure function $P_{LT}^\perp$ is extracted for the first time, with the value $(-15.4 \pm 3.3 (stat.)^{+1.5}_{-2.4} (syst.)) GeV^{-2}$, using the low-energy theorem for Virtual Compton Sattering. This structure function provides a hitherto unmeasured linear combination of the generalized polarizabilities of the proton. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1505.06106v1-abstract-full').style.display = 'none'; document.getElementById('1505.06106v1-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 May, 2015; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 2015. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 92, 054307 (2015) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1404.5502">arXiv:1404.5502</a> <span> [<a href="https://arxiv.org/pdf/1404.5502">pdf</a>, <a href="https://arxiv.org/format/1404.5502">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 - Experiment">hep-ex</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.112.221802">10.1103/PhysRevLett.112.221802 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for light massive gauge bosons as an explanation of the $(g-2)_渭$ anomaly at MAMI </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Merkel%2C+H">H. Merkel</a>, <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">P. Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Gayoso%2C+C+A">C. Ayerbe Gayoso</a>, <a href="/search/nucl-ex?searchtype=author&query=Beranek%2C+T">T. Beranek</a>, <a href="/search/nucl-ex?searchtype=author&query=Beri%C4%8Di%C4%8D%2C+J">J. Beri膷i膷</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernauer%2C+J+C">J. C. Bernauer</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6hm%2C+R">R. B枚hm</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/nucl-ex?searchtype=author&query=Correa%2C+L">L. Correa</a>, <a href="/search/nucl-ex?searchtype=author&query=Debenjak%2C+L">L. Debenjak</a>, <a href="/search/nucl-ex?searchtype=author&query=Denig%2C+A">A. Denig</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">M. O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Esser%2C+A">A. Esser</a>, <a href="/search/nucl-ex?searchtype=author&query=Fonvieille%2C+H">H. Fonvieille</a>, <a href="/search/nucl-ex?searchtype=author&query=Fri%C5%A1%C4%8Di%C4%87%2C+I">I. Fri拧膷i膰</a>, <a href="/search/nucl-ex?searchtype=author&query=de+la+Paz%2C+M+G+R">M. G贸mez Rodr铆guez de la Paz</a>, <a href="/search/nucl-ex?searchtype=author&query=Hoek%2C+M">M. Hoek</a>, <a href="/search/nucl-ex?searchtype=author&query=Kegel%2C+S">S. Kegel</a>, <a href="/search/nucl-ex?searchtype=author&query=Kohl%2C+Y">Y. Kohl</a>, <a href="/search/nucl-ex?searchtype=author&query=Middleton%2C+D+G">D. G. Middleton</a>, <a href="/search/nucl-ex?searchtype=author&query=Mihovilovi%C4%8D%2C+M">M. Mihovilovi膷</a>, <a href="/search/nucl-ex?searchtype=author&query=M%C3%BCller%2C+U">U. M眉ller</a>, <a href="/search/nucl-ex?searchtype=author&query=Nungesser%2C+L">L. Nungesser</a>, <a href="/search/nucl-ex?searchtype=author&query=Pochodzalla%2C+J">J. Pochodzalla</a>, <a href="/search/nucl-ex?searchtype=author&query=Rohrbeck%2C+M">M. Rohrbeck</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="1404.5502v1-abstract-short" style="display: inline;"> A massive, but light abelian U(1) gauge boson is a well motivated possible signature of physics beyond the Standard Model of particle physics. In this paper, the search for the signal of such a U(1) gauge boson in electron-positron pair-production at the spectrometer setup of the A1 Collaboration at the Mainz Microtron (MAMI) is described. Exclusion limits in the mass range of 40 MeV up to 300 MeV… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1404.5502v1-abstract-full').style.display = 'inline'; document.getElementById('1404.5502v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1404.5502v1-abstract-full" style="display: none;"> A massive, but light abelian U(1) gauge boson is a well motivated possible signature of physics beyond the Standard Model of particle physics. In this paper, the search for the signal of such a U(1) gauge boson in electron-positron pair-production at the spectrometer setup of the A1 Collaboration at the Mainz Microtron (MAMI) is described. Exclusion limits in the mass range of 40 MeV up to 300 MeV with a sensitivity in the mixing parameter of down to $蔚^2 = 8\times 10^{-7}$ are presented. A large fraction of the parameter space has been excluded where the discrepancy of the measured anomalous magnetic moment of the muon with theory might be explained by an additional U(1) gauge boson. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1404.5502v1-abstract-full').style.display = 'none'; document.getElementById('1404.5502v1-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 April, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2014. </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</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 112 (2014), 221802 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1307.7361">arXiv:1307.7361</a> <span> [<a href="https://arxiv.org/pdf/1307.7361">pdf</a>, <a href="https://arxiv.org/format/1307.7361">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> </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.111.132504">10.1103/PhysRevLett.111.132504 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the neutron electric to magnetic form factor ratio at Q2 = 1.58 GeV2 using the reaction 3He(e,e'n)pp </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Schlimme%2C+B+S">B. S. Schlimme</a>, <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">P. Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Gayoso%2C+C+A+A">C. A. Ayerbe Gayoso</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernauer%2C+J+C">J. C. Bernauer</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6hm%2C+R">R. B枚hm</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/nucl-ex?searchtype=author&query=Challand%2C+T">Th. Challand</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">M. O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Doria%2C+L">L. Doria</a>, <a href="/search/nucl-ex?searchtype=author&query=Fellenberger%2C+F">F. Fellenberger</a>, <a href="/search/nucl-ex?searchtype=author&query=Fonvieille%2C+H">H. Fonvieille</a>, <a href="/search/nucl-ex?searchtype=author&query=Rodr%C3%ADguez%2C+M+G">M. G贸mez Rodr铆guez</a>, <a href="/search/nucl-ex?searchtype=author&query=Grabmayr%2C+P">P. Grabmayr</a>, <a href="/search/nucl-ex?searchtype=author&query=Hehl%2C+T">T. Hehl</a>, <a href="/search/nucl-ex?searchtype=author&query=Heil%2C+W">W. Heil</a>, <a href="/search/nucl-ex?searchtype=author&query=Kiselev%2C+D">D. Kiselev</a>, <a href="/search/nucl-ex?searchtype=author&query=Krimmer%2C+J">J. Krimmer</a>, <a href="/search/nucl-ex?searchtype=author&query=Makek%2C+M">M. Makek</a>, <a href="/search/nucl-ex?searchtype=author&query=Merkel%2C+H">H. Merkel</a>, <a href="/search/nucl-ex?searchtype=author&query=Middleton%2C+D+G">D. G. Middleton</a>, <a href="/search/nucl-ex?searchtype=author&query=M%C3%BCller%2C+U">U. M眉ller</a>, <a href="/search/nucl-ex?searchtype=author&query=Nungesser%2C+L">L. Nungesser</a>, <a href="/search/nucl-ex?searchtype=author&query=Ott%2C+B+A">B. A. Ott</a>, <a href="/search/nucl-ex?searchtype=author&query=Pochodzalla%2C+J">J. Pochodzalla</a>, <a href="/search/nucl-ex?searchtype=author&query=Potokar%2C+M">M. Potokar</a> , et al. (7 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="1307.7361v2-abstract-short" style="display: inline;"> A measurement of beam helicity asymmetries in the reaction 3He(e,e'n)pp has been performed at the Mainz Microtron in quasielastic kinematics in order to determine the electric to magnetic form factor ratio of the neutron, GEn/GMn, at a four momentum transfer Q2 = 1.58 GeV2. Longitudinally polarized electrons were scattered on a highly polarized 3He gas target. The scattered electrons were detected… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1307.7361v2-abstract-full').style.display = 'inline'; document.getElementById('1307.7361v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1307.7361v2-abstract-full" style="display: none;"> A measurement of beam helicity asymmetries in the reaction 3He(e,e'n)pp has been performed at the Mainz Microtron in quasielastic kinematics in order to determine the electric to magnetic form factor ratio of the neutron, GEn/GMn, at a four momentum transfer Q2 = 1.58 GeV2. Longitudinally polarized electrons were scattered on a highly polarized 3He gas target. The scattered electrons were detected with a high-resolution magnetic spectrometer, and the ejected neutrons with a dedicated neutron detector composed of scintillator bars. To reduce systematic errors data were taken for four different target polarization orientations allowing the determination of GEn/GMn from a double ratio. We find mu_n GEn/GMn = 0.250 +/- 0.058(stat.) +/- 0.017 (sys.). <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1307.7361v2-abstract-full').style.display = 'none'; document.getElementById('1307.7361v2-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 August, 2013; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 July, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 2013. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1307.6227">arXiv:1307.6227</a> <span> [<a href="https://arxiv.org/pdf/1307.6227">pdf</a>, <a href="https://arxiv.org/format/1307.6227">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> </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/PhysRevC.90.015206">10.1103/PhysRevC.90.015206 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> The electric and magnetic form factors of the proton </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=A1+Collaboration"> A1 Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernauer%2C+J+C">J. C. Bernauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">M. O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Friedrich%2C+J">J. Friedrich</a>, <a href="/search/nucl-ex?searchtype=author&query=Walcher%2C+T">Th. Walcher</a>, <a href="/search/nucl-ex?searchtype=author&query=Gayoso%2C+P+A+C+A">P. Achenbach C. Ayerbe Gayoso</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6hm%2C+R">R. B枚hm</a>, <a href="/search/nucl-ex?searchtype=author&query=Debenjak%2C+L">L. Debenjak</a>, <a href="/search/nucl-ex?searchtype=author&query=Doria%2C+L">L. Doria</a>, <a href="/search/nucl-ex?searchtype=author&query=Esser%2C+A">A. Esser</a>, <a href="/search/nucl-ex?searchtype=author&query=Fonvieille%2C+H">H. Fonvieille</a>, <a href="/search/nucl-ex?searchtype=author&query=de+la+Paz%2C+M+G+R">M. G贸mez Rodr铆gues de la Paz</a>, <a href="/search/nucl-ex?searchtype=author&query=Friedrich%2C+J+M">J. M. Friedrich</a>, <a href="/search/nucl-ex?searchtype=author&query=Makek%2C+M">M. Makek</a>, <a href="/search/nucl-ex?searchtype=author&query=Merkel%2C+H">H. Merkel</a>, <a href="/search/nucl-ex?searchtype=author&query=Middleton%2C+D+G">D. G. Middleton</a>, <a href="/search/nucl-ex?searchtype=author&query=M%C3%BCller%2C+U">U. M眉ller</a>, <a href="/search/nucl-ex?searchtype=author&query=Nungesser%2C+L">L. Nungesser</a>, <a href="/search/nucl-ex?searchtype=author&query=Pochodzalla%2C+J">J. Pochodzalla</a>, <a href="/search/nucl-ex?searchtype=author&query=Potokar%2C+M">M. Potokar</a>, <a href="/search/nucl-ex?searchtype=author&query=Majos%2C+S+S">S. S谩nchez Majos</a>, <a href="/search/nucl-ex?searchtype=author&query=Schlimme%2C+B+S">B. S. Schlimme</a>, <a href="/search/nucl-ex?searchtype=author&query=%C5%A0irca%2C+S">S. 艩irca</a>, <a href="/search/nucl-ex?searchtype=author&query=Weinriefer%2C+M">M. Weinriefer</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="1307.6227v2-abstract-short" style="display: inline;"> The paper describes a precise measurement of electron scattering off the proton at momentum transfers of $0.003 \lesssim Q^2 \lesssim 1$\ GeV$^2$. The average point-to-point error of the cross sections in this experiment is $\sim$ 0.37%. These data are used for a coherent new analysis together with all world data of unpolarized and polarized electron scattering from the very smallest to the highes… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1307.6227v2-abstract-full').style.display = 'inline'; document.getElementById('1307.6227v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1307.6227v2-abstract-full" style="display: none;"> The paper describes a precise measurement of electron scattering off the proton at momentum transfers of $0.003 \lesssim Q^2 \lesssim 1$\ GeV$^2$. The average point-to-point error of the cross sections in this experiment is $\sim$ 0.37%. These data are used for a coherent new analysis together with all world data of unpolarized and polarized electron scattering from the very smallest to the highest momentum transfers so far measured. The extracted electric and magnetic form factors provide new insight into their exact shape, deviating from the classical dipole form, and of structure on top of this gross shape. The data reaching very low $Q^2$ values are used for a new determination of the electric and magnetic radii. An empirical determination of the Two-Photon-Exchange (TPE) correction is presented. The implications of this correction on the radii and the question of a directly visible signal of the pion cloud are addressed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1307.6227v2-abstract-full').style.display = 'none'; document.getElementById('1307.6227v2-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, 2014; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 23 July, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 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">38 pages, 20 figures. Updated data files. PRC version</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. C 90, 015206 (2014) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1108.3533">arXiv:1108.3533</a> <span> [<a href="https://arxiv.org/pdf/1108.3533">pdf</a>, <a href="https://arxiv.org/format/1108.3533">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> </div> </div> <p class="title is-5 mathjax"> Reply to Comment on "High-Precision Determination of the Electric and Magnetic Form Factors of the Proton" </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Bernauer%2C+J+C">J. C. Bernauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">P. Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Gayoso%2C+C+A">C. Ayerbe Gayoso</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6hm%2C+R">R. B枚hm</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/nucl-ex?searchtype=author&query=Debenjak%2C+L">L. Debenjak</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">M. O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Doria%2C+L">L. Doria</a>, <a href="/search/nucl-ex?searchtype=author&query=Esser%2C+A">A. Esser</a>, <a href="/search/nucl-ex?searchtype=author&query=Fonvieille%2C+H">H. Fonvieille</a>, <a href="/search/nucl-ex?searchtype=author&query=Friedrich%2C+J+M">J. M. Friedrich</a>, <a href="/search/nucl-ex?searchtype=author&query=Friedrich%2C+J">J. Friedrich</a>, <a href="/search/nucl-ex?searchtype=author&query=de+la+Paz%2C+M+G+R">M. G贸mez Rodr铆guez de la Paz</a>, <a href="/search/nucl-ex?searchtype=author&query=Makek%2C+M">M. Makek</a>, <a href="/search/nucl-ex?searchtype=author&query=Merkel%2C+H">H. Merkel</a>, <a href="/search/nucl-ex?searchtype=author&query=Middleton%2C+D+G">D. G. Middleton</a>, <a href="/search/nucl-ex?searchtype=author&query=M%C3%BCller%2C+U">U. M眉ller</a>, <a href="/search/nucl-ex?searchtype=author&query=Nungesser%2C+L">L. Nungesser</a>, <a href="/search/nucl-ex?searchtype=author&query=Pochodzalla%2C+J">J. Pochodzalla</a>, <a href="/search/nucl-ex?searchtype=author&query=Potokar%2C+M">M. Potokar</a>, <a href="/search/nucl-ex?searchtype=author&query=Majos%2C+S+S">S. S谩nchez Majos</a>, <a href="/search/nucl-ex?searchtype=author&query=Schlimme%2C+B+S">B. S. Schlimme</a>, <a href="/search/nucl-ex?searchtype=author&query=%C5%A0irca%2C+S">S. 艩irca</a>, <a href="/search/nucl-ex?searchtype=author&query=Walcher%2C+T">Th. Walcher</a>, <a href="/search/nucl-ex?searchtype=author&query=Weinriefer%2C+M">M. Weinriefer</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="1108.3533v1-abstract-short" style="display: inline;"> In arXiv:1108.3058v1 [nucl-ex], Arrington criticizes the Coulomb corrections we applied in the analysis of high precision form factor data (see Phys.Rev.Lett.105:242001, 2010, arXiv:1007.5076v3 [nucl-ex]). We show, by comparing different calculations cited in the Comment, that the criticism of the Comment neglects the large uncertainty of "more modern" TPE corrections. This uncertainty has also be… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1108.3533v1-abstract-full').style.display = 'inline'; document.getElementById('1108.3533v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1108.3533v1-abstract-full" style="display: none;"> In arXiv:1108.3058v1 [nucl-ex], Arrington criticizes the Coulomb corrections we applied in the analysis of high precision form factor data (see Phys.Rev.Lett.105:242001, 2010, arXiv:1007.5076v3 [nucl-ex]). We show, by comparing different calculations cited in the Comment, that the criticism of the Comment neglects the large uncertainty of "more modern" TPE corrections. This uncertainty has also been seen in recent polarized measurements. We rerun our analysis using one of these calculations. The results show that the Comment exaggerates the quantitative effect at small Q^2. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1108.3533v1-abstract-full').style.display = 'none'; document.getElementById('1108.3533v1-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 August, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 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">1 page, 2 figure, To appear as a Reply Comment in Physical Review Letters</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1105.0193">arXiv:1105.0193</a> <span> [<a href="https://arxiv.org/pdf/1105.0193">pdf</a>, <a href="https://arxiv.org/format/1105.0193">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Instrumentation and Detectors">physics.ins-det</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/10.1109/TNS.2011.2157523">10.1109/TNS.2011.2157523 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A Large-Scale FPGA-Based Trigger and Dead-Time Free DAQ System for the Kaos Spectrometer at MAMI </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">P. Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Gayoso%2C+C+A">C. Ayerbe Gayoso</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernauer%2C+J+C">J. C. Bernauer</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6hm%2C+R">R. B枚hm</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/nucl-ex?searchtype=author&query=Debenjak%2C+L">L. Debenjak</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">M. O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Esser%2C+A">A. Esser</a>, <a href="/search/nucl-ex?searchtype=author&query=Fri%C5%A1%C4%8Di%C4%87%2C+I">I. Fri拧膷i膰</a>, <a href="/search/nucl-ex?searchtype=author&query=de+la+Paz%2C+M+G+R">M. G贸mez Rodr铆guez de la Paz</a>, <a href="/search/nucl-ex?searchtype=author&query=Hoffmann%2C+J">J. Hoffmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Makek%2C+M">M. Makek</a>, <a href="/search/nucl-ex?searchtype=author&query=Merkel%2C+H">H. Merkel</a>, <a href="/search/nucl-ex?searchtype=author&query=Minami%2C+S">S. Minami</a>, <a href="/search/nucl-ex?searchtype=author&query=M%C3%BCller%2C+U">U. M眉ller</a>, <a href="/search/nucl-ex?searchtype=author&query=Nungesser%2C+L">L. Nungesser</a>, <a href="/search/nucl-ex?searchtype=author&query=Ott%2C+W">W. Ott</a>, <a href="/search/nucl-ex?searchtype=author&query=Pochodzalla%2C+J">J. Pochodzalla</a>, <a href="/search/nucl-ex?searchtype=author&query=Potokar%2C+M">M. Potokar</a>, <a href="/search/nucl-ex?searchtype=author&query=Rusanov%2C+I">I. Rusanov</a>, <a href="/search/nucl-ex?searchtype=author&query=Saito%2C+T+R">T. R. Saito</a>, <a href="/search/nucl-ex?searchtype=author&query=Majos%2C+S+S">S. S谩nchez Majos</a>, <a href="/search/nucl-ex?searchtype=author&query=Schlimme%2C+B+S">B. S. Schlimme</a>, <a href="/search/nucl-ex?searchtype=author&query=%C5%A0irca%2C+S">S. 艩irca</a>, <a href="/search/nucl-ex?searchtype=author&query=Voltz%2C+S">S. Voltz</a> , et al. (2 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="1105.0193v1-abstract-short" style="display: inline;"> The Kaos spectrometer is maintained by the A1 collaboration at the Mainz Microtron MAMI with a focus on the study of (e,e'K^+) coincidence reactions. For its electron-arm two vertical planes of fiber arrays, each comprising approximately 10 000 fibers, are operated close to zero degree scattering angle and in close proximity to the electron beam. A nearly dead-time free DAQ system to acquire timin… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1105.0193v1-abstract-full').style.display = 'inline'; document.getElementById('1105.0193v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1105.0193v1-abstract-full" style="display: none;"> The Kaos spectrometer is maintained by the A1 collaboration at the Mainz Microtron MAMI with a focus on the study of (e,e'K^+) coincidence reactions. For its electron-arm two vertical planes of fiber arrays, each comprising approximately 10 000 fibers, are operated close to zero degree scattering angle and in close proximity to the electron beam. A nearly dead-time free DAQ system to acquire timing and tracking information has been installed for this spectrometer arm. The signals of 144 multi-anode photomultipliers are collected by 96-channel front-end boards, digitized by double-threshold discriminators and the signal time is picked up by state-of-the-art F1 time-to-digital converter chips. In order to minimize background rates a sophisticated trigger logic was implemented in newly developed Vuprom modules. The trigger performs noise suppression, signal cluster finding, particle tracking, and coincidence timing, and can be expanded for kinematical matching (e'K^+) coincidences. The full system was designed to process more than 4 000 read-out channels and to cope with the high electron flux in the spectrometer and the high count rate requirement of the detectors. It was successfully in-beam tested at MAMI in 2009. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1105.0193v1-abstract-full').style.display = 'none'; document.getElementById('1105.0193v1-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 May, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 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">Contributed to 17th IEEE Real Time Conference (RT10), Lisbon, 24-28 May 2010</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> IEEE Transactions on Nuclear Science, Vol. 58, No. 4, 2011, PAGE 1677 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1104.4254">arXiv:1104.4254</a> <span> [<a href="https://arxiv.org/pdf/1104.4254">pdf</a>, <a href="https://arxiv.org/ps/1104.4254">ps</a>, <a href="https://arxiv.org/format/1104.4254">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="Instrumentation and Detectors">physics.ins-det</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.nima.2011.03.039">10.1016/j.nima.2011.03.039 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Particle tracking in kaon electroproduction with cathode-charge sampling in multi-wire proportional chambers </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">P. Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Gayoso%2C+C+A">C. Ayerbe Gayoso</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernauer%2C+J+C">J. C. Bernauer</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6hm%2C+R">R. B枚hm</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6sz%2C+M">M. B枚sz</a>, <a href="/search/nucl-ex?searchtype=author&query=Debenjak%2C+L">L. Debenjak</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">M. O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Esser%2C+A">A. Esser</a>, <a href="/search/nucl-ex?searchtype=author&query=Fri%C5%A1%C4%8Di%C4%87%2C+I">I. Fri拧膷i膰</a>, <a href="/search/nucl-ex?searchtype=author&query=de+la+Paz%2C+M+G+R">M. G贸mez Rodr铆guez de la Paz</a>, <a href="/search/nucl-ex?searchtype=author&query=Makek%2C+M">M. Makek</a>, <a href="/search/nucl-ex?searchtype=author&query=Merkel%2C+H">H. Merkel</a>, <a href="/search/nucl-ex?searchtype=author&query=M%C3%BCller%2C+U">U. M眉ller</a>, <a href="/search/nucl-ex?searchtype=author&query=Nungesser%2C+L">L. Nungesser</a>, <a href="/search/nucl-ex?searchtype=author&query=Pochodzalla%2C+J">J. Pochodzalla</a>, <a href="/search/nucl-ex?searchtype=author&query=Potokar%2C+M">M. Potokar</a>, <a href="/search/nucl-ex?searchtype=author&query=Majos%2C+S+S">S. S谩nchez Majos</a>, <a href="/search/nucl-ex?searchtype=author&query=Schlimme%2C+B+S">B. S. Schlimme</a>, <a href="/search/nucl-ex?searchtype=author&query=%C5%A0irca%2C+S">S. 艩irca</a>, <a href="/search/nucl-ex?searchtype=author&query=Weinriefer%2C+M">M. Weinriefer</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="1104.4254v1-abstract-short" style="display: inline;"> Wire chambers are routinely operated as tracking detectors in magnetic spectrometers at high-intensity continuous electron beams. Especially in experiments studying reactions with small cross-sections the reaction yield is limited by the background rate in the chambers. One way to determine the track of a charged particle through a multi-wire proportional chamber (MWPC) is the measurement of the c… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1104.4254v1-abstract-full').style.display = 'inline'; document.getElementById('1104.4254v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1104.4254v1-abstract-full" style="display: none;"> Wire chambers are routinely operated as tracking detectors in magnetic spectrometers at high-intensity continuous electron beams. Especially in experiments studying reactions with small cross-sections the reaction yield is limited by the background rate in the chambers. One way to determine the track of a charged particle through a multi-wire proportional chamber (MWPC) is the measurement of the charge distribution induced on its cathodes. In practical applications of this read-out method, the algorithm to relate the measured charge distribution to the avalanche position is an important factor for the achievable position resolution and for the track reconstruction efficiency. An algorithm was developed for operating two large-sized MWPCs in a strong background environment with multiple-particle tracks. Resulting efficiencies were determined as a function of the electron beam current and on the signal amplitudes. Because of the different energy-losses of pions, kaons, and protons in the momentum range of the spectrometer the efficiencies depend also on the particle species. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1104.4254v1-abstract-full').style.display = 'none'; document.getElementById('1104.4254v1-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 April, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2011. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl.Instrum.Meth.A641:105-113,2011 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1104.4245">arXiv:1104.4245</a> <span> [<a href="https://arxiv.org/pdf/1104.4245">pdf</a>, <a href="https://arxiv.org/ps/1104.4245">ps</a>, <a href="https://arxiv.org/format/1104.4245">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> </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/i2012-12014-9">10.1140/epja/i2012-12014-9 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Exclusive electroproduction of K+ Lambda and K+ Sigma^0 final states at Q^2 = 0.030-0.055 (GeV/c)^2 </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">P. Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Gayoso%2C+C+A">C. Ayerbe Gayoso</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernauer%2C+J+C">J. C. Bernauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Bianchin%2C+S">S. Bianchin</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6hm%2C+R">R. B枚hm</a>, <a href="/search/nucl-ex?searchtype=author&query=Borodina%2C+O">O. Borodina</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6sz%2C+M">M. B枚sz</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/nucl-ex?searchtype=author&query=Bozkurt%2C+V">V. Bozkurt</a>, <a href="/search/nucl-ex?searchtype=author&query=Byd%C5%BEovsk%C3%BD%2C+P">P. Byd啪ovsk媒</a>, <a href="/search/nucl-ex?searchtype=author&query=Debenjak%2C+L">L. Debenjak</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">M. O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Esser%2C+A">A. Esser</a>, <a href="/search/nucl-ex?searchtype=author&query=Fri%C5%A1%C4%8Di%C4%87%2C+I">I. Fri拧膷i膰</a>, <a href="/search/nucl-ex?searchtype=author&query=G%C3%B6k%C3%BCz%C3%BCm%2C+B">B. G枚k眉z眉m</a>, <a href="/search/nucl-ex?searchtype=author&query=de+la+Paz%2C+M+G+R">M. G贸mez Rodr铆guez de la Paz</a>, <a href="/search/nucl-ex?searchtype=author&query=Grie%C3%9Finger%2C+K">K. Grie脽inger</a>, <a href="/search/nucl-ex?searchtype=author&query=Jennewein%2C+P">P. Jennewein</a>, <a href="/search/nucl-ex?searchtype=author&query=Kim%2C+E">E. Kim</a>, <a href="/search/nucl-ex?searchtype=author&query=Makek%2C+M">M. Makek</a>, <a href="/search/nucl-ex?searchtype=author&query=Merkel%2C+H">H. Merkel</a>, <a href="/search/nucl-ex?searchtype=author&query=Minami%2C+S">S. Minami</a>, <a href="/search/nucl-ex?searchtype=author&query=M%C3%BCller%2C+U">U. M眉ller</a>, <a href="/search/nucl-ex?searchtype=author&query=Nakajima%2C+D">D. Nakajima</a>, <a href="/search/nucl-ex?searchtype=author&query=Nungesser%2C+L">L. Nungesser</a> , et al. (10 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="1104.4245v3-abstract-short" style="display: inline;"> Cross section measurements of the exclusive p(e,e'K+)Lambda,Sigma^0 electroproduction reactions have been performed at the Mainz Microtron MAMI in the A1 spectrometer facility using for the first time the Kaos spectrometer for kaon detection. These processes were studied in a kinematical region not covered by any previous experiment. The nucleon was probed in its third resonance region with virtua… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1104.4245v3-abstract-full').style.display = 'inline'; document.getElementById('1104.4245v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1104.4245v3-abstract-full" style="display: none;"> Cross section measurements of the exclusive p(e,e'K+)Lambda,Sigma^0 electroproduction reactions have been performed at the Mainz Microtron MAMI in the A1 spectrometer facility using for the first time the Kaos spectrometer for kaon detection. These processes were studied in a kinematical region not covered by any previous experiment. The nucleon was probed in its third resonance region with virtual photons of low four-momenta, Q^2= 0.030-0.055 (GeV/c)^2. The MAMI data indicate a smooth transition in Q^2 from photoproduction to electroproduction cross sections. Comparison with predictions of effective Lagrangian models based on the isobar approach reveal that strong longitudinal couplings of the virtual photon to the N* resonances can be excluded from these models. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1104.4245v3-abstract-full').style.display = 'none'; document.getElementById('1104.4245v3-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 November, 2011; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 April, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 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">16 pages, 7 figures</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1101.4091">arXiv:1101.4091</a> <span> [<a href="https://arxiv.org/pdf/1101.4091">pdf</a>, <a href="https://arxiv.org/ps/1101.4091">ps</a>, <a href="https://arxiv.org/format/1101.4091">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> </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.106.251802">10.1103/PhysRevLett.106.251802 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Search for Light Gauge Bosons of the Dark Sector at the Mainz Microtron </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Merkel%2C+H">H. Merkel</a>, <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">P. Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Gayoso%2C+C+A">C. Ayerbe Gayoso</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernauer%2C+J+C">J. C. Bernauer</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6hm%2C+R">R. B枚hm</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/nucl-ex?searchtype=author&query=Debenjak%2C+L">L. Debenjak</a>, <a href="/search/nucl-ex?searchtype=author&query=Denig%2C+A">A. Denig</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">M. O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Esser%2C+A">A. Esser</a>, <a href="/search/nucl-ex?searchtype=author&query=Fonvieille%2C+H">H. Fonvieille</a>, <a href="/search/nucl-ex?searchtype=author&query=Fri%C5%A1%C4%8Di%C4%87%2C+I">I. Fri拧膷i膰</a>, <a href="/search/nucl-ex?searchtype=author&query=Middleton%2C+D+G">D. G. Middleton</a>, <a href="/search/nucl-ex?searchtype=author&query=M%C3%BCller%2C+U">U. M眉ller</a>, <a href="/search/nucl-ex?searchtype=author&query=Nungesser%2C+L">L. Nungesser</a>, <a href="/search/nucl-ex?searchtype=author&query=Pochodzalla%2C+J">J. Pochodzalla</a>, <a href="/search/nucl-ex?searchtype=author&query=Rohrbeck%2C+M">M. Rohrbeck</a>, <a href="/search/nucl-ex?searchtype=author&query=Majos%2C+S+S">S. S谩nchez Majos</a>, <a href="/search/nucl-ex?searchtype=author&query=Schlimme%2C+B+S">B. S. Schlimme</a>, <a href="/search/nucl-ex?searchtype=author&query=Schoth%2C+M">M. Schoth</a>, <a href="/search/nucl-ex?searchtype=author&query=%C5%A0irca%2C+S">S. 艩irca</a>, <a href="/search/nucl-ex?searchtype=author&query=Weinriefer%2C+M">M. Weinriefer</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="1101.4091v2-abstract-short" style="display: inline;"> A new exclusion limit for the electromagnetic production of a light U(1) gauge boson 纬' decaying to e^+e^- was determined by the A1 Collaboration at the Mainz Microtron. Such light gauge bosons appear in several extensions of the standard model and are also discussed as candidates for the interaction of dark matter with standard model matter. In electron scattering from a heavy nucleus, the existi… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1101.4091v2-abstract-full').style.display = 'inline'; document.getElementById('1101.4091v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1101.4091v2-abstract-full" style="display: none;"> A new exclusion limit for the electromagnetic production of a light U(1) gauge boson 纬' decaying to e^+e^- was determined by the A1 Collaboration at the Mainz Microtron. Such light gauge bosons appear in several extensions of the standard model and are also discussed as candidates for the interaction of dark matter with standard model matter. In electron scattering from a heavy nucleus, the existing limits for a narrow state coupling to e^+e^- were reduced by nearly an order of magnitude in the range of the lepton pair mass of 210 MeV/c^2 < m_e^+e^- < 300 MeV/c^2. This experiment demonstrates the potential of high current and high resolution fixed target experiments for the search for physics beyond the standard model. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1101.4091v2-abstract-full').style.display = 'none'; document.getElementById('1101.4091v2-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 June, 2011; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 21 January, 2011; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 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">4 pages, 7 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.106:251802,2011 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1007.5076">arXiv:1007.5076</a> <span> [<a href="https://arxiv.org/pdf/1007.5076">pdf</a>, <a href="https://arxiv.org/ps/1007.5076">ps</a>, <a href="https://arxiv.org/format/1007.5076">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> </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.105.242001">10.1103/PhysRevLett.105.242001 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> High-precision determination of the electric and magnetic form factors of the proton </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Bernauer%2C+J+C">J. C. Bernauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">P. Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Gayoso%2C+C+A">C. Ayerbe Gayoso</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6hm%2C+R">R. B枚hm</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/nucl-ex?searchtype=author&query=Debenjak%2C+L">L. Debenjak</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">M. O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Doria%2C+L">L. Doria</a>, <a href="/search/nucl-ex?searchtype=author&query=Esser%2C+A">A. Esser</a>, <a href="/search/nucl-ex?searchtype=author&query=Fonvieille%2C+H">H. Fonvieille</a>, <a href="/search/nucl-ex?searchtype=author&query=Friedrich%2C+J+M">J. M. Friedrich</a>, <a href="/search/nucl-ex?searchtype=author&query=Friedrich%2C+J">J. Friedrich</a>, <a href="/search/nucl-ex?searchtype=author&query=de+la+Paz%2C+M+G+R">M. G贸mez Rodr铆guez de la Paz</a>, <a href="/search/nucl-ex?searchtype=author&query=Makek%2C+M">M. Makek</a>, <a href="/search/nucl-ex?searchtype=author&query=Merkel%2C+H">H. Merkel</a>, <a href="/search/nucl-ex?searchtype=author&query=Middleton%2C+D+G">D. G. Middleton</a>, <a href="/search/nucl-ex?searchtype=author&query=M%C3%BCller%2C+U">U. M眉ller</a>, <a href="/search/nucl-ex?searchtype=author&query=Nungesser%2C+L">L. Nungesser</a>, <a href="/search/nucl-ex?searchtype=author&query=Pochodzalla%2C+J">J. Pochodzalla</a>, <a href="/search/nucl-ex?searchtype=author&query=Potokar%2C+M">M. Potokar</a>, <a href="/search/nucl-ex?searchtype=author&query=Majos%2C+S+S">S. S谩nchez Majos</a>, <a href="/search/nucl-ex?searchtype=author&query=Schlimme%2C+B+S">B. S. Schlimme</a>, <a href="/search/nucl-ex?searchtype=author&query=%C5%A0irca%2C+S">S. 艩irca</a>, <a href="/search/nucl-ex?searchtype=author&query=Walcher%2C+T">Th. Walcher</a>, <a href="/search/nucl-ex?searchtype=author&query=Weinriefer%2C+M">M. Weinriefer</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="1007.5076v3-abstract-short" style="display: inline;"> New precise results of a measurement of the elastic electron-proton scattering cross section performed at the Mainz Microtron MAMI are presented. About 1400 cross sections were measured with negative four-momentum transfers squared up to Q^2=1 (GeV/c)^2 with statistical errors below 0.2%. The electric and magnetic form factors of the proton were extracted by fits of a large variety of form factor… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1007.5076v3-abstract-full').style.display = 'inline'; document.getElementById('1007.5076v3-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1007.5076v3-abstract-full" style="display: none;"> New precise results of a measurement of the elastic electron-proton scattering cross section performed at the Mainz Microtron MAMI are presented. About 1400 cross sections were measured with negative four-momentum transfers squared up to Q^2=1 (GeV/c)^2 with statistical errors below 0.2%. The electric and magnetic form factors of the proton were extracted by fits of a large variety of form factor models directly to the cross sections. The form factors show some features at the scale of the pion cloud. The charge and magnetic radii are determined to be r_E=0.879(5)(stat.)(4)(syst.)(2)(model)(4)(group) fm and r_M=0.777(13)(stat.)(9)(syst.)(5)(model)(2)(group) fm. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1007.5076v3-abstract-full').style.display = 'none'; document.getElementById('1007.5076v3-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 December, 2010; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 28 July, 2010; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> July 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, 2 figures, published in Phys. Rev. Lett. v3: added references, updated text, color 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.105:242001,2010 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0903.1215">arXiv:0903.1215</a> <span> [<a href="https://arxiv.org/pdf/0903.1215">pdf</a>, <a href="https://arxiv.org/ps/0903.1215">ps</a>, <a href="https://arxiv.org/format/0903.1215">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> </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.103.152501">10.1103/PhysRevLett.103.152501 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Investigation of the Exclusive ^{3}He(e,e'pn)p Reaction </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Middleton%2C+D+G">D. G. Middleton</a>, <a href="/search/nucl-ex?searchtype=author&query=Annand%2C+J+R+M">J. R. M. Annand</a>, <a href="/search/nucl-ex?searchtype=author&query=Antelo%2C+M+A">M. Ases Antelo</a>, <a href="/search/nucl-ex?searchtype=author&query=Ayerbe%2C+C">C. Ayerbe</a>, <a href="/search/nucl-ex?searchtype=author&query=Barneo%2C+P">P. Barneo</a>, <a href="/search/nucl-ex?searchtype=author&query=Baumann%2C+D">D. Baumann</a>, <a href="/search/nucl-ex?searchtype=author&query=Bermuth%2C+J">J. Bermuth</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernauer%2C+J">J. Bernauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Blok%2C+H+P">H. P. Blok</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6hm%2C+R">R. B枚hm</a>, <a href="/search/nucl-ex?searchtype=author&query=Ding%2C+M">M. Ding</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">M. O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Friedrich%2C+J">J. Friedrich</a>, <a href="/search/nucl-ex?searchtype=author&query=Llongo%2C+J+G">J. Garc铆a Llongo</a>, <a href="/search/nucl-ex?searchtype=author&query=Glazier%2C+D+I">D. I. Glazier</a>, <a href="/search/nucl-ex?searchtype=author&query=Golak%2C+J">J. Golak</a>, <a href="/search/nucl-ex?searchtype=author&query=Gl%C3%B6ckle%2C+W">W. Gl枚ckle</a>, <a href="/search/nucl-ex?searchtype=author&query=Grabmayr%2C+P">P. Grabmayr</a>, <a href="/search/nucl-ex?searchtype=author&query=Hehl%2C+T">T. Hehl</a>, <a href="/search/nucl-ex?searchtype=author&query=Heim%2C+J">J. Heim</a>, <a href="/search/nucl-ex?searchtype=author&query=Hesselink%2C+W+H+A">W. H. A. Hesselink</a>, <a href="/search/nucl-ex?searchtype=author&query=Jans%2C+E">E. Jans</a>, <a href="/search/nucl-ex?searchtype=author&query=Kamada%2C+H">H. Kamada</a>, <a href="/search/nucl-ex?searchtype=author&query=Ma%C3%B1as%2C+G+J">G. Jover Ma帽as</a> , et al. (24 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="0903.1215v1-abstract-short" style="display: inline;"> Cross sections for the ^{3}He(e,e'pn)p reaction were measured for the first time at energy transfers of 220 and 270 MeV for several momentum transfers ranging from 300 to 450 MeV/c. Cross sections are presented as a function of the momentum of the recoil proton and the momentum transfer. Continuum Faddeev calculations using the Argonne V18 and Bonn-B nucleon-nucleon potentials overestimate the m… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0903.1215v1-abstract-full').style.display = 'inline'; document.getElementById('0903.1215v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0903.1215v1-abstract-full" style="display: none;"> Cross sections for the ^{3}He(e,e'pn)p reaction were measured for the first time at energy transfers of 220 and 270 MeV for several momentum transfers ranging from 300 to 450 MeV/c. Cross sections are presented as a function of the momentum of the recoil proton and the momentum transfer. Continuum Faddeev calculations using the Argonne V18 and Bonn-B nucleon-nucleon potentials overestimate the measured cross sections by a factor 5 at low recoil proton momentum with the discrepancy becoming much smaller at higher recoil momentum. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0903.1215v1-abstract-full').style.display = 'none'; document.getElementById('0903.1215v1-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 March, 2009; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 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">5, pages, 3 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.103:152501,2009 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0803.0911">arXiv:0803.0911</a> <span> [<a href="https://arxiv.org/pdf/0803.0911">pdf</a>, <a href="https://arxiv.org/ps/0803.0911">ps</a>, <a href="https://arxiv.org/format/0803.0911">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> </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/i2008-10609-3">10.1140/epja/i2008-10609-3 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> A new measurement of the structure functions $P_{LL}-P_{TT}/epsilon$ and $P_{LT}$ in virtual Compton scattering at $Q^2=$ 0.33 (GeV/c)$^2$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Collaboration%2C+T+M">The MAMI-A1 Collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=%3A"> :</a>, <a href="/search/nucl-ex?searchtype=author&query=Janssens%2C+P">P. Janssens</a>, <a href="/search/nucl-ex?searchtype=author&query=Doria%2C+L">L. Doria</a>, <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">P. Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Gayoso%2C+C+A">C. Ayerbe Gayoso</a>, <a href="/search/nucl-ex?searchtype=author&query=Baumann%2C+D">D. Baumann</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernauer%2C+J+C">J. C. Bernauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Bensafa%2C+I+K">I. K. Bensafa</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6hm%2C+R">R. B枚hm</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/nucl-ex?searchtype=author&query=Burtin%2C+E">E. Burtin</a>, <a href="/search/nucl-ex?searchtype=author&query=D%27Hose%2C+N">N. D'Hose</a>, <a href="/search/nucl-ex?searchtype=author&query=Defa%C3%BF%2C+X">X. Defa每</a>, <a href="/search/nucl-ex?searchtype=author&query=Ding%2C+M">M. Ding</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">M. O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Fonvieille%2C+H">H. Fonvieille</a>, <a href="/search/nucl-ex?searchtype=author&query=Friedrich%2C+J">J. Friedrich</a>, <a href="/search/nucl-ex?searchtype=author&query=Friedrich%2C+J+M">J. M. Friedrich</a>, <a href="/search/nucl-ex?searchtype=author&query=Laveissi%C3%A8re%2C+G">G. Laveissi猫re</a>, <a href="/search/nucl-ex?searchtype=author&query=Makek%2C+M">M. Makek</a>, <a href="/search/nucl-ex?searchtype=author&query=Marroncle%2C+J">J. Marroncle</a>, <a href="/search/nucl-ex?searchtype=author&query=Merkel%2C+H">H. Merkel</a>, <a href="/search/nucl-ex?searchtype=author&query=M%C3%BCller%2C+U">U. M眉ller</a>, <a href="/search/nucl-ex?searchtype=author&query=Nungesser%2C+L">L. Nungesser</a> , et al. (15 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="0803.0911v2-abstract-short" style="display: inline;"> The cross section of the $ep \to e' p' 纬$ reaction has been measured at $Q^2 = 0.33$ (GeV/c)$^2$. The experiment was performed using the electron beam of the MAMI accelerator and the standard detector setup of the A1 Collaboration. The cross section is analyzed using the low-energy theorem for virtual Compton scattering, yielding a new determination of the two structure functions… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0803.0911v2-abstract-full').style.display = 'inline'; document.getElementById('0803.0911v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0803.0911v2-abstract-full" style="display: none;"> The cross section of the $ep \to e' p' 纬$ reaction has been measured at $Q^2 = 0.33$ (GeV/c)$^2$. The experiment was performed using the electron beam of the MAMI accelerator and the standard detector setup of the A1 Collaboration. The cross section is analyzed using the low-energy theorem for virtual Compton scattering, yielding a new determination of the two structure functions $P_LL}-P_{TT}/epsilon$ and $P_{LT}$ which are linear combinations of the generalized polarizabilities of the proton. We find somewhat larger values than in the previous investigation at the same $Q^2$. This difference, however, is purely due to our more refined analysis of the data. The results tend to confirm the non-trivial $Q^2$-evolution of the generalized polarizabilities and call for more measurements in the low-$Q^2$ region ($\le$ 1 (GeV/c)$^2$). <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0803.0911v2-abstract-full').style.display = 'none'; document.getElementById('0803.0911v2-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 May, 2008; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 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">9 pages, 10 figures. EPJA version. slight revisions in the text and figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Eur.Phys.J.A37:1,2008 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0802.2830">arXiv:0802.2830</a> <span> [<a href="https://arxiv.org/pdf/0802.2830">pdf</a>, <a href="https://arxiv.org/ps/0802.2830">ps</a>, <a href="https://arxiv.org/format/0802.2830">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> </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.nima.2008.05.017">10.1016/j.nima.2008.05.017 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> In-beam tests of scintillating fibre detectors at MAMI and at GSI </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">P. Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Gayoso%2C+C+A">C. Ayerbe Gayoso</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernauer%2C+J+C">J. C. Bernauer</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6hm%2C+R">R. B枚hm</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">M. O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Doria%2C+L">L. Doria</a>, <a href="/search/nucl-ex?searchtype=author&query=de+la+Paz%2C+M+G+R">M. G贸mez Rodr铆guez de la Paz</a>, <a href="/search/nucl-ex?searchtype=author&query=Merkel%2C+H">H. Merkel</a>, <a href="/search/nucl-ex?searchtype=author&query=M%C3%BCller%2C+U">U. M眉ller</a>, <a href="/search/nucl-ex?searchtype=author&query=Nungesser%2C+L">L. Nungesser</a>, <a href="/search/nucl-ex?searchtype=author&query=Pochodzalla%2C+J">J. Pochodzalla</a>, <a href="/search/nucl-ex?searchtype=author&query=Majos%2C+S+S">S. S谩nchez Majos</a>, <a href="/search/nucl-ex?searchtype=author&query=Schlimme%2C+B+S">B. S. Schlimme</a>, <a href="/search/nucl-ex?searchtype=author&query=Walcher%2C+T">Th. Walcher</a>, <a href="/search/nucl-ex?searchtype=author&query=Weinriefer%2C+M">M. Weinriefer</a>, <a href="/search/nucl-ex?searchtype=author&query=Debenjak%2C+L">L. Debenjak</a>, <a href="/search/nucl-ex?searchtype=author&query=Potokar%2C+M">M. Potokar</a>, <a href="/search/nucl-ex?searchtype=author&query=Sirca%2C+S">S. Sirca</a>, <a href="/search/nucl-ex?searchtype=author&query=Kavatsyuk%2C+M">M. Kavatsyuk</a>, <a href="/search/nucl-ex?searchtype=author&query=Lepyoshkina%2C+O">O. Lepyoshkina</a>, <a href="/search/nucl-ex?searchtype=author&query=Minami%2C+S">S. Minami</a>, <a href="/search/nucl-ex?searchtype=author&query=Nakajima%2C+D">D. Nakajima</a>, <a href="/search/nucl-ex?searchtype=author&query=Rappold%2C+C">C. Rappold</a>, <a href="/search/nucl-ex?searchtype=author&query=Saito%2C+T+R">T. R. Saito</a>, <a href="/search/nucl-ex?searchtype=author&query=Schardt%2C+D">D. Schardt</a> , et al. (5 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="0802.2830v1-abstract-short" style="display: inline;"> The performance of scintillating fibre detectors was studied with electrons at the spectrometer facility of the Mainz microtron MAMI, as well as in a C-12 beam of 2 AGeV energy and in a beam of different particle species at GSI. Multi-anode photomultipliers were used to read out one or more bundles of 128 fibres each in different geometries. For electrons a time resolution of FWHM = 1 ns was mea… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0802.2830v1-abstract-full').style.display = 'inline'; document.getElementById('0802.2830v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0802.2830v1-abstract-full" style="display: none;"> The performance of scintillating fibre detectors was studied with electrons at the spectrometer facility of the Mainz microtron MAMI, as well as in a C-12 beam of 2 AGeV energy and in a beam of different particle species at GSI. Multi-anode photomultipliers were used to read out one or more bundles of 128 fibres each in different geometries. For electrons a time resolution of FWHM = 1 ns was measured in a single detector plane with a detection efficiency epsilon > 99%. A time resolution of 310 ps (FWHM) between two planes of fibres was achieved for carbon ions, leading to a FWHM = 220 ps for a single detector. The hit position residual was measured with a width of FWHM = 0.27 mm. The variation in the measured energy deposition was Delta E/E= 15-20% (FWHM) for carbon ions. In addition, the energy response to p/pi/d particles was studied. Based on the good detector performance fibre hodoscopes will be constructed for the KAOS/A1 spectrometer at MAMI and for the HypHI experiment at GSI. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0802.2830v1-abstract-full').style.display = 'none'; document.getElementById('0802.2830v1-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 February, 2008; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> February 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">submitted to Nucl. Instrum. Meth. A</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl.Instrum.Meth.A593:353-360,2008 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/0705.3550">arXiv:0705.3550</a> <span> [<a href="https://arxiv.org/pdf/0705.3550">pdf</a>, <a href="https://arxiv.org/ps/0705.3550">ps</a>, <a href="https://arxiv.org/format/0705.3550">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> </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.99.132301">10.1103/PhysRevLett.99.132301 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Recoil polarization and beam-recoil double polarization measurement of 畏electroproduction on the proton in the region of the S_{11}(1535) resonance </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Merkel%2C+H">H. Merkel</a>, <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">P. Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Gayoso%2C+C+A+A">C. A. Ayerbe Gayoso</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernauer%2C+J+C">J. C. Bernauer</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6hm%2C+R">R. B枚hm</a>, <a href="/search/nucl-ex?searchtype=author&query=Bosnar%2C+D">D. Bosnar</a>, <a href="/search/nucl-ex?searchtype=author&query=Cheymol%2C+B">B. Cheymol</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">M. O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Doria%2C+L">L. Doria</a>, <a href="/search/nucl-ex?searchtype=author&query=Fonvieille%2C+H">H. Fonvieille</a>, <a href="/search/nucl-ex?searchtype=author&query=Friedrich%2C+J">J. Friedrich</a>, <a href="/search/nucl-ex?searchtype=author&query=Janssens%2C+P">P. Janssens</a>, <a href="/search/nucl-ex?searchtype=author&query=Makek%2C+M">M. Makek</a>, <a href="/search/nucl-ex?searchtype=author&query=M%C3%BCller%2C+U">U. M眉ller</a>, <a href="/search/nucl-ex?searchtype=author&query=Nungesser%2C+L">L. Nungesser</a>, <a href="/search/nucl-ex?searchtype=author&query=Pochodzalla%2C+J">J. Pochodzalla</a>, <a href="/search/nucl-ex?searchtype=author&query=Potokar%2C+M">M. Potokar</a>, <a href="/search/nucl-ex?searchtype=author&query=Majos%2C+S+S">S. S谩nchez Majos</a>, <a href="/search/nucl-ex?searchtype=author&query=Schlimme%2C+B+S">B. S. Schlimme</a>, <a href="/search/nucl-ex?searchtype=author&query=%C5%A0irca%2C+S">S. 艩irca</a>, <a href="/search/nucl-ex?searchtype=author&query=Tiator%2C+L">L. Tiator</a>, <a href="/search/nucl-ex?searchtype=author&query=Walcher%2C+T">Th. Walcher</a>, <a href="/search/nucl-ex?searchtype=author&query=Weinriefer%2C+M">M. Weinriefer</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="0705.3550v1-abstract-short" style="display: inline;"> The beam-recoil double polarization P_{x'}^h and P_{z'}^h and the recoil polarization P_{y'} were measured for the first time for the p(\vec{e},e'\vec{p})畏reaction at a four-momentum transfer of Q^2=0.1 GeV^2/c^2 and a center of mass production angle of 胃= 120^\circ at MAMI C. With a center of mass energy range of 1500 MeV < W < 1550 MeV the region of the S_{11}(1535) and D_{13}(1520) resonance… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0705.3550v1-abstract-full').style.display = 'inline'; document.getElementById('0705.3550v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="0705.3550v1-abstract-full" style="display: none;"> The beam-recoil double polarization P_{x'}^h and P_{z'}^h and the recoil polarization P_{y'} were measured for the first time for the p(\vec{e},e'\vec{p})畏reaction at a four-momentum transfer of Q^2=0.1 GeV^2/c^2 and a center of mass production angle of 胃= 120^\circ at MAMI C. With a center of mass energy range of 1500 MeV < W < 1550 MeV the region of the S_{11}(1535) and D_{13}(1520) resonance was covered. The results are discussed in the framework of a phenomenological isobar model (Eta-MAID). While P_{x'}^h and P_{z'}^h are in good agreement with the model, P_{y'} shows a significant deviation, consistent with existing photoproduction data on the polarized-target asymmetry. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('0705.3550v1-abstract-full').style.display = 'none'; document.getElementById('0705.3550v1-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 May, 2007; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 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, 1 figure</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev.Lett.99:132301,2007 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/nucl-ex/0702052">arXiv:nucl-ex/0702052</a> <span> [<a href="https://arxiv.org/pdf/nucl-ex/0702052">pdf</a>, <a href="https://arxiv.org/ps/nucl-ex/0702052">ps</a>, <a href="https://arxiv.org/format/nucl-ex/0702052">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> </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.nima.2007.05.210">10.1016/j.nima.2007.05.210 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of Propagation Time Dispersion in a Scintillator </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Achenbach%2C+P">P. Achenbach</a>, <a href="/search/nucl-ex?searchtype=author&query=Gayoso%2C+C+A">C. Ayerbe Gayoso</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernauer%2C+J">J. Bernauer</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%B6hm%2C+R">R. B枚hm</a>, <a href="/search/nucl-ex?searchtype=author&query=Distler%2C+M+O">M. O. Distler</a>, <a href="/search/nucl-ex?searchtype=author&query=Doria%2C+L">L. Doria</a>, <a href="/search/nucl-ex?searchtype=author&query=Friedrich%2C+J">J. Friedrich</a>, <a href="/search/nucl-ex?searchtype=author&query=Merkel%2C+H">H. Merkel</a>, <a href="/search/nucl-ex?searchtype=author&query=M%C3%BCller%2C+U">U. M眉ller</a>, <a href="/search/nucl-ex?searchtype=author&query=Nungesser%2C+L">L. Nungesser</a>, <a href="/search/nucl-ex?searchtype=author&query=Pochodzalla%2C+J">J. Pochodzalla</a>, <a href="/search/nucl-ex?searchtype=author&query=Majos%2C+S+S">S. S谩nchez Majos</a>, <a href="/search/nucl-ex?searchtype=author&query=Schlimme%2C+S">S. Schlimme</a>, <a href="/search/nucl-ex?searchtype=author&query=Walcher%2C+T">Th. Walcher</a>, <a href="/search/nucl-ex?searchtype=author&query=Weinriefer%2C+M">M. Weinriefer</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-ex/0702052v1-abstract-short" style="display: inline;"> One contribution to the time resolution of a scintillation detector is the signal time spread due to path length variations of the detected photons from a point source. In an experimental study a rectangular scintillator was excited by means of a fast pulsed ultraviolet laser at different positions along its longitudinal axis. Timing measurements with a photomultiplier tube in a detection plane… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('nucl-ex/0702052v1-abstract-full').style.display = 'inline'; document.getElementById('nucl-ex/0702052v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="nucl-ex/0702052v1-abstract-full" style="display: none;"> One contribution to the time resolution of a scintillation detector is the signal time spread due to path length variations of the detected photons from a point source. In an experimental study a rectangular scintillator was excited by means of a fast pulsed ultraviolet laser at different positions along its longitudinal axis. Timing measurements with a photomultiplier tube in a detection plane displaced from the scintillator end face showed a correlation between signal time and tube position indicating only a small distortion of photon angles during transmission. The data is in good agreement with a Monte Carlo simulation used to compute the average photon angle with respect to the detection plane and the average propagation time. Limitations on timing performance that arise from propagation time dispersion are expected for long and thin scintillators used in future particle identification systems. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('nucl-ex/0702052v1-abstract-full').style.display = 'none'; document.getElementById('nucl-ex/0702052v1-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 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">Submitted to Nucl. Instr. and Meth. in Phys. Res. A</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl.Instrum.Meth.A578:253-260,2007 </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/about">About</a></li> <li><a href="https://info.arxiv.org/help">Help</a></li> </ul> </div> <div class="column"> <ul class="nav-spaced"> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>contact arXiv</title><desc>Click here to contact arXiv</desc><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg> <a href="https://info.arxiv.org/help/contact.html"> Contact</a> </li> <li> <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><title>subscribe to arXiv mailings</title><desc>Click here to subscribe</desc><path d="M476 3.2L12.5 270.6c-18.1 10.4-15.8 35.6 2.2 43.2L121 358.4l287.3-253.2c5.5-4.9 13.3 2.6 8.6 8.3L176 407v80.5c0 23.6 28.5 32.9 42.5 15.8L282 426l124.6 52.2c14.2 6 30.4-2.9 33-18.2l72-432C515 7.8 493.3-6.8 476 3.2z"/></svg> <a href="https://info.arxiv.org/help/subscribe"> Subscribe</a> </li> </ul> </div> </div> </div>   <div class="column"> <div class="columns"> <div class="column"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/license/index.html">Copyright</a></li> <li><a href="https://info.arxiv.org/help/policies/privacy_policy.html">Privacy Policy</a></li> </ul> </div> <div class="column sorry-app-links"> <ul class="nav-spaced"> <li><a href="https://info.arxiv.org/help/web_accessibility.html">Web Accessibility Assistance</a></li> <li> <p class="help"> <a class="a11y-main-link" href="https://status.arxiv.org" target="_blank">arXiv Operational Status <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 512" class="icon filter-dark_grey" role="presentation"><path d="M224.3 273l-136 136c-9.4 9.4-24.6 9.4-33.9 0l-22.6-22.6c-9.4-9.4-9.4-24.6 0-33.9l96.4-96.4-96.4-96.4c-9.4-9.4-9.4-24.6 0-33.9L54.3 103c9.4-9.4 24.6-9.4 33.9 0l136 136c9.5 9.4 9.5 24.6.1 34z"/></svg></a><br> Get status notifications via <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/email/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" class="icon filter-black" role="presentation"><path d="M502.3 190.8c3.9-3.1 9.7-.2 9.7 4.7V400c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V195.6c0-5 5.7-7.8 9.7-4.7 22.4 17.4 52.1 39.5 154.1 113.6 21.1 15.4 56.7 47.8 92.2 47.6 35.7.3 72-32.8 92.3-47.6 102-74.1 131.6-96.3 154-113.7zM256 320c23.2.4 56.6-29.2 73.4-41.4 132.7-96.3 142.8-104.7 173.4-128.7 5.8-4.5 9.2-11.5 9.2-18.9v-19c0-26.5-21.5-48-48-48H48C21.5 64 0 85.5 0 112v19c0 7.4 3.4 14.3 9.2 18.9 30.6 23.9 40.7 32.4 173.4 128.7 16.8 12.2 50.2 41.8 73.4 41.4z"/></svg>email</a> or <a class="is-link" href="https://subscribe.sorryapp.com/24846f03/slack/new" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512" class="icon filter-black" role="presentation"><path d="M94.12 315.1c0 25.9-21.16 47.06-47.06 47.06S0 341 0 315.1c0-25.9 21.16-47.06 47.06-47.06h47.06v47.06zm23.72 0c0-25.9 21.16-47.06 47.06-47.06s47.06 21.16 47.06 47.06v117.84c0 25.9-21.16 47.06-47.06 47.06s-47.06-21.16-47.06-47.06V315.1zm47.06-188.98c-25.9 0-47.06-21.16-47.06-47.06S139 32 164.9 32s47.06 21.16 47.06 47.06v47.06H164.9zm0 23.72c25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06H47.06C21.16 243.96 0 222.8 0 196.9s21.16-47.06 47.06-47.06H164.9zm188.98 47.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06h-47.06V196.9zm-23.72 0c0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06V79.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06V196.9zM283.1 385.88c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06v-47.06h47.06zm0-23.72c-25.9 0-47.06-21.16-47.06-47.06 0-25.9 21.16-47.06 47.06-47.06h117.84c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06H283.1z"/></svg>slack</a> </p> </li> </ul> </div> </div> </div>  </div> </footer> <script src="https://static.arxiv.org/static/base/1.0.0a5/js/member_acknowledgement.js"></script> </body> </html>

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