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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/1608.01530">arXiv:1608.01530</a> <span> [<a href="https://arxiv.org/pdf/1608.01530">pdf</a>, <a href="https://arxiv.org/ps/1608.01530">ps</a>, <a href="https://arxiv.org/format/1608.01530">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="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.94.034618">10.1103/PhysRevC.94.034618 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Study of the pd(dp) -> 3He pi pi reactions close to threshold </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Bellemann%2C+F">F. Bellemann</a>, <a href="/search/nucl-ex?searchtype=author&query=Berg%2C+A">A. Berg</a>, <a href="/search/nucl-ex?searchtype=author&query=Bisplinghoff%2C+J">J. Bisplinghoff</a>, <a href="/search/nucl-ex?searchtype=author&query=Bohlscheid%2C+G">G. Bohlscheid</a>, <a href="/search/nucl-ex?searchtype=author&query=Ernst%2C+J">J. Ernst</a>, <a href="/search/nucl-ex?searchtype=author&query=Henrich%2C+C">C. Henrich</a>, <a href="/search/nucl-ex?searchtype=author&query=Hinterberger%2C+F">F. Hinterberger</a>, <a href="/search/nucl-ex?searchtype=author&query=Ibald%2C+R">R. Ibald</a>, <a href="/search/nucl-ex?searchtype=author&query=Jahn%2C+R">R. Jahn</a>, <a href="/search/nucl-ex?searchtype=author&query=Joosten%2C+R">R. Joosten</a>, <a href="/search/nucl-ex?searchtype=author&query=Kilian%2C+K">K. Kilian</a>, <a href="/search/nucl-ex?searchtype=author&query=Kozela%2C+A">A. Kozela</a>, <a href="/search/nucl-ex?searchtype=author&query=Machner%2C+H">H. Machner</a>, <a href="/search/nucl-ex?searchtype=author&query=Magiera%2C+A">A. Magiera</a>, <a href="/search/nucl-ex?searchtype=author&query=Munkel%2C+J">J. Munkel</a>, <a href="/search/nucl-ex?searchtype=author&query=von+Neumann-Cosel%2C+P">P. von Neumann-Cosel</a>, <a href="/search/nucl-ex?searchtype=author&query=von+Rossen%2C+P">P. von Rossen</a>, <a href="/search/nucl-ex?searchtype=author&query=Schnitker%2C+H">H. Schnitker</a>, <a href="/search/nucl-ex?searchtype=author&query=Scho%2C+K">K. Scho</a>, <a href="/search/nucl-ex?searchtype=author&query=Smyrski%2C+J">J. Smyrski</a>, <a href="/search/nucl-ex?searchtype=author&query=Toelle%2C+R">R. Toelle</a>, <a href="/search/nucl-ex?searchtype=author&query=Wilkin%2C+C">C. Wilkin</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="1608.01530v1-abstract-short" style="display: inline;"> New experimental data on the pd -> 3He pi+ pi- reaction obtained with the COSY-MOMO detector below the three-pion threshold are presented. The reaction was also studied in inverse kinematics with a deuteron beam and the higher counting rates achieved were especially important at low excess energies. The comparison of these data with inclusive pd -> 3He+X rates allowed estimates also to be made of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1608.01530v1-abstract-full').style.display = 'inline'; document.getElementById('1608.01530v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1608.01530v1-abstract-full" style="display: none;"> New experimental data on the pd -> 3He pi+ pi- reaction obtained with the COSY-MOMO detector below the three-pion threshold are presented. The reaction was also studied in inverse kinematics with a deuteron beam and the higher counting rates achieved were especially important at low excess energies. The comparison of these data with inclusive pd -> 3He+X rates allowed estimates also to be made of pi0 pi0 production. The results confirm our earlier findings that close to threshold there is no enhancement at low excitation energies in the pi+ pi- system, where the data seem largely suppressed compared to phase space. Possible explanations for this behavior, such as strong p- waves in the pi+pi- -system or the influence of two-step processes, are explored. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1608.01530v1-abstract-full').style.display = 'none'; document.getElementById('1608.01530v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 4 August, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2016. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1606.03725">arXiv:1606.03725</a> <span> [<a href="https://arxiv.org/pdf/1606.03725">pdf</a>, <a href="https://arxiv.org/format/1606.03725">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/10.1016/j.nuclphysb.2016.12.015">10.1016/j.nuclphysb.2016.12.015 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Exclusive $蠅$ meson muoproduction on transversely polarised protons </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Adolph%2C+C">C. Adolph</a>, <a href="/search/nucl-ex?searchtype=author&query=Agarwala%2C+J">J. Agarwala</a>, <a href="/search/nucl-ex?searchtype=author&query=Aghasyan%2C+M">M. Aghasyan</a>, <a href="/search/nucl-ex?searchtype=author&query=Akhunzyanov%2C+R">R. Akhunzyanov</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexeev%2C+M+G">M. G. Alexeev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexeev%2C+G+D">G. D. Alexeev</a>, <a href="/search/nucl-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Anfimov%2C+N+V">N. V. Anfimov</a>, <a href="/search/nucl-ex?searchtype=author&query=Anosov%2C+V">V. Anosov</a>, <a href="/search/nucl-ex?searchtype=author&query=Augustyniak%2C+W">W. Augustyniak</a>, <a href="/search/nucl-ex?searchtype=author&query=Austregesilo%2C+A">A. Austregesilo</a>, <a href="/search/nucl-ex?searchtype=author&query=Azevedo%2C+C+D+R">C. D. R. Azevedo</a>, <a href="/search/nucl-ex?searchtype=author&query=Badelek%2C+B">B. Badelek</a>, <a href="/search/nucl-ex?searchtype=author&query=Balestra%2C+F">F. Balestra</a>, <a href="/search/nucl-ex?searchtype=author&query=Barth%2C+J">J. Barth</a>, <a href="/search/nucl-ex?searchtype=author&query=Beck%2C+R">R. Beck</a>, <a href="/search/nucl-ex?searchtype=author&query=Bedfer%2C+Y">Y. Bedfer</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernhard%2C+J">J. Bernhard</a>, <a href="/search/nucl-ex?searchtype=author&query=Bicker%2C+K">K. Bicker</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielert%2C+E+R">E. R. Bielert</a>, <a href="/search/nucl-ex?searchtype=author&query=Birsa%2C+R">R. Birsa</a>, <a href="/search/nucl-ex?searchtype=author&query=Bisplinghoff%2C+J">J. Bisplinghoff</a>, <a href="/search/nucl-ex?searchtype=author&query=Bodlak%2C+M">M. Bodlak</a>, <a href="/search/nucl-ex?searchtype=author&query=Boer%2C+M">M. Boer</a> , et al. (204 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="1606.03725v2-abstract-short" style="display: inline;"> Exclusive production of $蠅$ mesons was studied at the COMPASS experiment by scattering $160~\mathrm{GeV}/\mathit{c}$ muons off transversely polarised protons. Five single-spin and three double-spin azimuthal asymmetries were measured in the range of photon virtuality $1~(\mathrm{GeV}/\mathit{c})^2 < Q^2 < 10~(\mathrm{GeV}/\mathit{c})^2$, Bjorken scaling variable $0.003 < x_{\mathit{Bj}} < 0.3$ and… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1606.03725v2-abstract-full').style.display = 'inline'; document.getElementById('1606.03725v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1606.03725v2-abstract-full" style="display: none;"> Exclusive production of $蠅$ mesons was studied at the COMPASS experiment by scattering $160~\mathrm{GeV}/\mathit{c}$ muons off transversely polarised protons. Five single-spin and three double-spin azimuthal asymmetries were measured in the range of photon virtuality $1~(\mathrm{GeV}/\mathit{c})^2 < Q^2 < 10~(\mathrm{GeV}/\mathit{c})^2$, Bjorken scaling variable $0.003 < x_{\mathit{Bj}} < 0.3$ and transverse momentum squared of the $蠅$ meson $0.05~(\mathrm{GeV}/\mathit{c})^2 < p_{T}^{2} < 0.5~(\mathrm{GeV}/\mathit{c})^2$. The measured asymmetries are sensitive to the nucleon helicity-flip Generalised Parton Distributions (GPD) $E$ that are related to the orbital angular momentum of quarks, the chiral-odd GPDs $H_{T}$ that are related to the transversity Parton Distribution Functions, and the sign of the $蟺蠅$ transition form factor. The results are compared to recent calculations of a GPD-based model. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1606.03725v2-abstract-full').style.display = 'none'; document.getElementById('1606.03725v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 October, 2017; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 12 June, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> June 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">23 pages, 9 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-EP-2016-157 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1604.02695">arXiv:1604.02695</a> <span> [<a href="https://arxiv.org/pdf/1604.02695">pdf</a>, <a href="https://arxiv.org/format/1604.02695">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/10.1016/j.physletb.2016.09.042">10.1016/j.physletb.2016.09.042 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Multiplicities of charged pions and unidentified charged hadrons from deep-inelastic scattering of muons off an isoscalar target </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Adolph%2C+C">C. Adolph</a>, <a href="/search/nucl-ex?searchtype=author&query=Agarwala%2C+J">J. Agarwala</a>, <a href="/search/nucl-ex?searchtype=author&query=Aghasyan%2C+M">M. Aghasyan</a>, <a href="/search/nucl-ex?searchtype=author&query=Akhunzyanov%2C+R">R. Akhunzyanov</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexeev%2C+M+G">M. G. Alexeev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexeev%2C+G+D">G. D. Alexeev</a>, <a href="/search/nucl-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Anfimov%2C+N+V">N. V. Anfimov</a>, <a href="/search/nucl-ex?searchtype=author&query=Anosov%2C+V">V. Anosov</a>, <a href="/search/nucl-ex?searchtype=author&query=Augustyniak%2C+W">W. Augustyniak</a>, <a href="/search/nucl-ex?searchtype=author&query=Austregesilo%2C+A">A. Austregesilo</a>, <a href="/search/nucl-ex?searchtype=author&query=Azevedo%2C+C+D+R">C. D. R. Azevedo</a>, <a href="/search/nucl-ex?searchtype=author&query=Badelek%2C+B">B. Badelek</a>, <a href="/search/nucl-ex?searchtype=author&query=Balestra%2C+F">F. Balestra</a>, <a href="/search/nucl-ex?searchtype=author&query=Barth%2C+J">J. Barth</a>, <a href="/search/nucl-ex?searchtype=author&query=Beck%2C+R">R. Beck</a>, <a href="/search/nucl-ex?searchtype=author&query=Bedfer%2C+Y">Y. Bedfer</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernhard%2C+J">J. Bernhard</a>, <a href="/search/nucl-ex?searchtype=author&query=Bicker%2C+K">K. Bicker</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielert%2C+E+R">E. R. Bielert</a>, <a href="/search/nucl-ex?searchtype=author&query=Birsa%2C+R">R. Birsa</a>, <a href="/search/nucl-ex?searchtype=author&query=Bisplinghoff%2C+J">J. Bisplinghoff</a>, <a href="/search/nucl-ex?searchtype=author&query=Bodlak%2C+M">M. Bodlak</a>, <a href="/search/nucl-ex?searchtype=author&query=Boer%2C+M">M. Boer</a> , et al. (203 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="1604.02695v2-abstract-short" style="display: inline;"> Multiplicities of charged pions and unidentified hadrons produced in deep-inelastic scattering were measured in bins of the Bjorken scaling variable $x$, the relative virtual-photon energy $y$ and the relative hadron energy $z$. Data were obtained by the COMPASS Collaboration using a 160 GeV muon beam and an isoscalar target ($^6$LiD). They cover the kinematic domain in the photon virtuality… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1604.02695v2-abstract-full').style.display = 'inline'; document.getElementById('1604.02695v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1604.02695v2-abstract-full" style="display: none;"> Multiplicities of charged pions and unidentified hadrons produced in deep-inelastic scattering were measured in bins of the Bjorken scaling variable $x$, the relative virtual-photon energy $y$ and the relative hadron energy $z$. Data were obtained by the COMPASS Collaboration using a 160 GeV muon beam and an isoscalar target ($^6$LiD). They cover the kinematic domain in the photon virtuality $Q^2$ > 1(GeV/c$)^2$, $0.004 < x < 0.4$, $0.2 < z < 0.85$ and $0.1 < y < 0.7$. In addition, a leading-order pQCD analysis was performed using the pion multiplicity results to extract quark fragmentation functions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1604.02695v2-abstract-full').style.display = 'none'; document.getElementById('1604.02695v2-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 April, 2016; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 10 April, 2016; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 2016. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Report number:</span> CERN-EP-2016-095 </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1408.4286">arXiv:1408.4286</a> <span> [<a href="https://arxiv.org/pdf/1408.4286">pdf</a>, <a href="https://arxiv.org/format/1408.4286">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/10.1016/j.physletb.2014.11.058">10.1016/j.physletb.2014.11.058 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Odd and Even Partial Waves of $畏蟺^-$ and $畏'蟺^-$ in $蟺^-p\to畏^{(\prime)}蟺^-p$ at $191\,\textrm{GeV}/c$ </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Adolph%2C+C">C. Adolph</a>, <a href="/search/nucl-ex?searchtype=author&query=Akhunzyanov%2C+R">R. Akhunzyanov</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexeev%2C+M+G">M. G. Alexeev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexeev%2C+G+D">G. D. Alexeev</a>, <a href="/search/nucl-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Anosov%2C+V">V. Anosov</a>, <a href="/search/nucl-ex?searchtype=author&query=Austregesilo%2C+A">A. Austregesilo</a>, <a href="/search/nucl-ex?searchtype=author&query=Badelek%2C+B">B. Badelek</a>, <a href="/search/nucl-ex?searchtype=author&query=Balestra%2C+F">F. Balestra</a>, <a href="/search/nucl-ex?searchtype=author&query=Barth%2C+J">J. Barth</a>, <a href="/search/nucl-ex?searchtype=author&query=Baum%2C+G">G. Baum</a>, <a href="/search/nucl-ex?searchtype=author&query=Beck%2C+R">R. Beck</a>, <a href="/search/nucl-ex?searchtype=author&query=Bedfer%2C+Y">Y. Bedfer</a>, <a href="/search/nucl-ex?searchtype=author&query=Berlin%2C+A">A. Berlin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernhard%2C+J">J. Bernhard</a>, <a href="/search/nucl-ex?searchtype=author&query=Bicker%2C+K">K. Bicker</a>, <a href="/search/nucl-ex?searchtype=author&query=Bielert%2C+E+R">E. R. Bielert</a>, <a href="/search/nucl-ex?searchtype=author&query=Bieling%2C+J">J. Bieling</a>, <a href="/search/nucl-ex?searchtype=author&query=Birsa%2C+R">R. Birsa</a>, <a href="/search/nucl-ex?searchtype=author&query=Bisplinghoff%2C+J">J. Bisplinghoff</a>, <a href="/search/nucl-ex?searchtype=author&query=Bodlak%2C+M">M. Bodlak</a>, <a href="/search/nucl-ex?searchtype=author&query=Boer%2C+M">M. Boer</a>, <a href="/search/nucl-ex?searchtype=author&query=Bordalo%2C+P">P. Bordalo</a>, <a href="/search/nucl-ex?searchtype=author&query=Bradamante%2C+F">F. Bradamante</a> , et al. (184 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="1408.4286v1-abstract-short" style="display: inline;"> Exclusive production of $畏蟺^-$ and $畏'蟺^-$ has been studied with a $191\,\textrm{GeV}/c$ $蟺^-$ beam impinging on a hydrogen target at COMPASS (CERN). Partial-wave analyses reveal different odd/even angular momentum ($L$) characteristics in the inspected invariant mass range up to $3\,\textrm{GeV}/c^2$. A striking similarity between the two systems is observed for the $L=2,4,6$ intensities (scaled… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1408.4286v1-abstract-full').style.display = 'inline'; document.getElementById('1408.4286v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1408.4286v1-abstract-full" style="display: none;"> Exclusive production of $畏蟺^-$ and $畏'蟺^-$ has been studied with a $191\,\textrm{GeV}/c$ $蟺^-$ beam impinging on a hydrogen target at COMPASS (CERN). Partial-wave analyses reveal different odd/even angular momentum ($L$) characteristics in the inspected invariant mass range up to $3\,\textrm{GeV}/c^2$. A striking similarity between the two systems is observed for the $L=2,4,6$ intensities (scaled by kinematical factors) and the relative phases. The known resonances $a_2(1320)$ and $a_4(2040)$ are in line with this similarity. In contrast, a strong enhancement of $畏'蟺^-$ over $畏蟺^-$ is found for the $L=1,3,5$ waves, which carry non-$q\bar q$ quantum numbers. The $L=1$ intensity peaks at $1.7\,\textrm{GeV}/c^2$ in $畏'蟺^-$ and at $1.4\,\textrm{GeV}/c^2$ in $畏蟺^-$, the corresponding phase motions with respect to $L=2$ are different. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1408.4286v1-abstract-full').style.display = 'none'; document.getElementById('1408.4286v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 19 August, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 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">16 pages, 5 figures and 1 table</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1405.6377">arXiv:1405.6377</a> <span> [<a href="https://arxiv.org/pdf/1405.6377">pdf</a>, <a href="https://arxiv.org/format/1405.6377">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.114.062002">10.1103/PhysRevLett.114.062002 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of the charged-pion polarisability </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Adolph%2C+C">C. Adolph</a>, <a href="/search/nucl-ex?searchtype=author&query=Akhunzyanov%2C+R">R. Akhunzyanov</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexeev%2C+M+G">M. G. Alexeev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexeev%2C+G+D">G. D. Alexeev</a>, <a href="/search/nucl-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Anosov%2C+V">V. Anosov</a>, <a href="/search/nucl-ex?searchtype=author&query=Austregesilo%2C+A">A. Austregesilo</a>, <a href="/search/nucl-ex?searchtype=author&query=Badelek%2C+B">B. Badelek</a>, <a href="/search/nucl-ex?searchtype=author&query=Balestra%2C+F">F. Balestra</a>, <a href="/search/nucl-ex?searchtype=author&query=Barth%2C+J">J. Barth</a>, <a href="/search/nucl-ex?searchtype=author&query=Baum%2C+G">G. Baum</a>, <a href="/search/nucl-ex?searchtype=author&query=Beck%2C+R">R. Beck</a>, <a href="/search/nucl-ex?searchtype=author&query=Bedfer%2C+Y">Y. Bedfer</a>, <a href="/search/nucl-ex?searchtype=author&query=Berlin%2C+A">A. Berlin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernhard%2C+J">J. Bernhard</a>, <a href="/search/nucl-ex?searchtype=author&query=Bicker%2C+K">K. Bicker</a>, <a href="/search/nucl-ex?searchtype=author&query=Bieling%2C+J">J. Bieling</a>, <a href="/search/nucl-ex?searchtype=author&query=Birsa%2C+R">R. Birsa</a>, <a href="/search/nucl-ex?searchtype=author&query=Bisplinghoff%2C+J">J. Bisplinghoff</a>, <a href="/search/nucl-ex?searchtype=author&query=Bodlak%2C+M">M. Bodlak</a>, <a href="/search/nucl-ex?searchtype=author&query=Boer%2C+M">M. Boer</a>, <a href="/search/nucl-ex?searchtype=author&query=Bordalo%2C+P">P. Bordalo</a>, <a href="/search/nucl-ex?searchtype=author&query=Bradamante%2C+F">F. Bradamante</a>, <a href="/search/nucl-ex?searchtype=author&query=Braun%2C+C">C. Braun</a> , et al. (188 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="1405.6377v2-abstract-short" style="display: inline;"> The COMPASS collaboration at CERN has investigated pion Compton scattering, $蟺^-纬\rightarrow 蟺^-纬$, at centre-of-mass energy below 3.5 pion masses. The process is embedded in the reaction $蟺^-\mathrm{Ni}\rightarrow蟺^-纬\;\mathrm{Ni}$, which is initiated by 190\,GeV pions impinging on a nickel target. The exchange of quasi-real photons is selected by isolating the sharp Coulomb peak observed at smal… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1405.6377v2-abstract-full').style.display = 'inline'; document.getElementById('1405.6377v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1405.6377v2-abstract-full" style="display: none;"> The COMPASS collaboration at CERN has investigated pion Compton scattering, $蟺^-纬\rightarrow 蟺^-纬$, at centre-of-mass energy below 3.5 pion masses. The process is embedded in the reaction $蟺^-\mathrm{Ni}\rightarrow蟺^-纬\;\mathrm{Ni}$, which is initiated by 190\,GeV pions impinging on a nickel target. The exchange of quasi-real photons is selected by isolating the sharp Coulomb peak observed at smallest momentum transfers, $Q^2<0.0015$\,(GeV/$c$)$^2$. From a sample of 63\,000 events the pion electric polarisability is determined to be $伪_蟺 =\ (\,2.0\ \pm\ 0.6_{\mbox{\scriptsize stat}}\ \pm\ 0.7_{\mbox{\scriptsize syst}}\,) \times 10^{-4}\,\mbox{fm}^3$ under the assumption $伪_蟺=-尾_蟺$, which relates the electric and magnetic dipole polarisabilities. It is the most precise measurement of this fundamental low-energy parameter of strong interaction, that has been addressed since long by various methods with conflicting outcomes. While this result is in tension with previous dedicated measurements, it is found in agreement with the expectation from chiral perturbation theory. An additional measurement replacing pions by muons, for which the cross-section behavior is unambigiously known, was performed for an independent estimate of the systematic uncertainty. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1405.6377v2-abstract-full').style.display = 'none'; document.getElementById('1405.6377v2-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 January, 2015; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 25 May, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 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">Published version: 9 pages, 3 figures, 1 table</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys. Rev. Lett. 114, 062002 (2015) </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1405.6376">arXiv:1405.6376</a> <span> [<a href="https://arxiv.org/pdf/1405.6376">pdf</a>, <a href="https://arxiv.org/format/1405.6376">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/10.1016/j.nuclphysb.2014.07.020">10.1016/j.nuclphysb.2014.07.020 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Spin alignment and violation of the OZI rule in exclusive $蠅$ and $蠁$ production in pp collisions </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Adolph%2C+C">C. Adolph</a>, <a href="/search/nucl-ex?searchtype=author&query=Akhunzyanov%2C+R">R. Akhunzyanov</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexeev%2C+M+G">M. G. Alexeev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexeev%2C+G+D">G. D. Alexeev</a>, <a href="/search/nucl-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Anosov%2C+V">V. Anosov</a>, <a href="/search/nucl-ex?searchtype=author&query=Austregesilo%2C+A">A. Austregesilo</a>, <a href="/search/nucl-ex?searchtype=author&query=Badelek%2C+B">B. Badelek</a>, <a href="/search/nucl-ex?searchtype=author&query=Balestra%2C+F">F. Balestra</a>, <a href="/search/nucl-ex?searchtype=author&query=Barth%2C+J">J. Barth</a>, <a href="/search/nucl-ex?searchtype=author&query=Baum%2C+G">G. Baum</a>, <a href="/search/nucl-ex?searchtype=author&query=Beck%2C+R">R. Beck</a>, <a href="/search/nucl-ex?searchtype=author&query=Bedfer%2C+Y">Y. Bedfer</a>, <a href="/search/nucl-ex?searchtype=author&query=Berlin%2C+A">A. Berlin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernhard%2C+J">J. Bernhard</a>, <a href="/search/nucl-ex?searchtype=author&query=Bicker%2C+K">K. Bicker</a>, <a href="/search/nucl-ex?searchtype=author&query=Bieling%2C+J">J. Bieling</a>, <a href="/search/nucl-ex?searchtype=author&query=Birsa%2C+R">R. Birsa</a>, <a href="/search/nucl-ex?searchtype=author&query=Bisplinghoff%2C+J">J. Bisplinghoff</a>, <a href="/search/nucl-ex?searchtype=author&query=Bodlak%2C+M">M. Bodlak</a>, <a href="/search/nucl-ex?searchtype=author&query=Boer%2C+M">M. Boer</a>, <a href="/search/nucl-ex?searchtype=author&query=Bordalo%2C+P">P. Bordalo</a>, <a href="/search/nucl-ex?searchtype=author&query=Bradamante%2C+F">F. Bradamante</a>, <a href="/search/nucl-ex?searchtype=author&query=Braun%2C+C">C. Braun</a> , et al. (184 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="1405.6376v1-abstract-short" style="display: inline;"> Exclusive production of the isoscalar vector mesons $蠅$ and $蠁$ is measured with a 190 GeV$/c$ proton beam impinging on a liquid hydrogen target. Cross section ratios are determined in three intervals of the Feynman variable $x_{F}$ of the fast proton. A significant violation of the OZI rule is found, confirming earlier findings. Its kinematic dependence on $x_{F}$ and on the invariant mass… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1405.6376v1-abstract-full').style.display = 'inline'; document.getElementById('1405.6376v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1405.6376v1-abstract-full" style="display: none;"> Exclusive production of the isoscalar vector mesons $蠅$ and $蠁$ is measured with a 190 GeV$/c$ proton beam impinging on a liquid hydrogen target. Cross section ratios are determined in three intervals of the Feynman variable $x_{F}$ of the fast proton. A significant violation of the OZI rule is found, confirming earlier findings. Its kinematic dependence on $x_{F}$ and on the invariant mass $M_{p\mathrm{V}}$ of the system formed by fast proton $p_\mathrm{fast}$ and vector meson $V$ is discussed in terms of diffractive production of $p_\mathrm{fast}V$ resonances in competition with central production. The measurement of the spin density matrix element $蟻_{00}$ of the vector mesons in different selected reference frames provides another handle to distinguish the contributions of these two major reaction types. Again, dependences of the alignment on $x_{F}$ and on $M_{p\mathrm{V}}$ are found. Most of the observations can be traced back to the existence of several excited baryon states contributing to $蠅$ production which are absent in the case of the $蠁$ meson. Removing the low-mass $M_{p\mathrm{V}}$ resonant region, the OZI rule is found to be violated by a factor of eight, independently of $x_\mathrm{F}$. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1405.6376v1-abstract-full').style.display = 'none'; document.getElementById('1405.6376v1-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 May, 2014; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> May 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">23 pages, 13 figures and 5 tables</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1310.1454">arXiv:1310.1454</a> <span> [<a href="https://arxiv.org/pdf/1310.1454">pdf</a>, <a href="https://arxiv.org/format/1310.1454">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/10.1016/j.physletb.2014.02.005">10.1016/j.physletb.2014.02.005 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Transverse target spin asymmetries in exclusive $蟻^0$ muoproduction </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Adolph%2C+C">C. Adolph</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+M+G">M. G. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexakhin%2C+V+Y">V. Yu. Alexakhin</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexandrov%2C+Y">Yu. Alexandrov</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexeev%2C+G+D">G. D. Alexeev</a>, <a href="/search/nucl-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/nucl-ex?searchtype=author&query=Andrieux%2C+V">V. Andrieux</a>, <a href="/search/nucl-ex?searchtype=author&query=Austregesilo%2C+A">A. Austregesilo</a>, <a href="/search/nucl-ex?searchtype=author&query=Badellek%2C+B">B. Badellek</a>, <a href="/search/nucl-ex?searchtype=author&query=Balestra%2C+F">F. Balestra</a>, <a href="/search/nucl-ex?searchtype=author&query=Barth%2C+J">J. Barth</a>, <a href="/search/nucl-ex?searchtype=author&query=Baum%2C+G">G. Baum</a>, <a href="/search/nucl-ex?searchtype=author&query=Bedfer%2C+Y">Y. Bedfer</a>, <a href="/search/nucl-ex?searchtype=author&query=Berlin%2C+A">A. Berlin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernhard%2C+J">J. Bernhard</a>, <a href="/search/nucl-ex?searchtype=author&query=Bertini%2C+R">R. Bertini</a>, <a href="/search/nucl-ex?searchtype=author&query=Bicker%2C+K">K. Bicker</a>, <a href="/search/nucl-ex?searchtype=author&query=Bieling%2C+J">J. Bieling</a>, <a href="/search/nucl-ex?searchtype=author&query=Birsa%2C+R">R. Birsa</a>, <a href="/search/nucl-ex?searchtype=author&query=Bisplinghoff%2C+J">J. Bisplinghoff</a>, <a href="/search/nucl-ex?searchtype=author&query=Boer%2C+M">M. Boer</a>, <a href="/search/nucl-ex?searchtype=author&query=Bordalo%2C+P">P. Bordalo</a>, <a href="/search/nucl-ex?searchtype=author&query=Bradamante%2C+F">F. Bradamante</a>, <a href="/search/nucl-ex?searchtype=author&query=Braun%2C+C">C. Braun</a>, <a href="/search/nucl-ex?searchtype=author&query=Bravar%2C+A">A. Bravar</a> , et al. (188 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="1310.1454v2-abstract-short" style="display: inline;"> Exclusive production of $蟻^0$ mesons was studied at the COMPASS experiment by scattering 160 GeV/$c$ muons off transversely polarised protons. Five single-spin and three double-spin azimuthal asymmetries were measured as a function of $Q^2$, $x_{Bj}$, or $p_{T}^{2}$. The $\sin 蠁_S$ asymmetry is found to be $-0.019 \pm 0.008(stat.) \pm 0.003(syst.)$. All other asymmetries are also found to be of sm… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1310.1454v2-abstract-full').style.display = 'inline'; document.getElementById('1310.1454v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1310.1454v2-abstract-full" style="display: none;"> Exclusive production of $蟻^0$ mesons was studied at the COMPASS experiment by scattering 160 GeV/$c$ muons off transversely polarised protons. Five single-spin and three double-spin azimuthal asymmetries were measured as a function of $Q^2$, $x_{Bj}$, or $p_{T}^{2}$. The $\sin 蠁_S$ asymmetry is found to be $-0.019 \pm 0.008(stat.) \pm 0.003(syst.)$. All other asymmetries are also found to be of small magnitude and consistent with zero within experimental uncertainties. Very recent calculations using a GPD-based model agree well with the present results. The data is interpreted as evidence for the existence of chiral-odd, transverse generalized parton distributions. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1310.1454v2-abstract-full').style.display = 'none'; document.getElementById('1310.1454v2-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 9 October, 2013; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 5 October, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 2013. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">14 pages, two tables, 5 figures, bibliography updated</span> </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1304.0952">arXiv:1304.0952</a> <span> [<a href="https://arxiv.org/pdf/1304.0952">pdf</a>, <a href="https://arxiv.org/format/1304.0952">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/10.1140/epjc/s10052-013-2581-9">10.1140/epjc/s10052-013-2581-9 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Study of 危(1385) and 螢(1321) hyperon and antihyperon production in deep inelastic muon scattering </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Adolph%2C+C">C. Adolph</a>, <a href="/search/nucl-ex?searchtype=author&query=Alekseev%2C+M">M. Alekseev</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexakhin%2C+V+Y">V. Yu. Alexakhin</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexandrov%2C+Y">Yu. Alexandrov</a>, <a href="/search/nucl-ex?searchtype=author&query=Alexeev%2C+G+D">G. D. Alexeev</a>, <a href="/search/nucl-ex?searchtype=author&query=Amoroso%2C+A">A. Amoroso</a>, <a href="/search/nucl-ex?searchtype=author&query=Austregesilo%2C+A">A. Austregesilo</a>, <a href="/search/nucl-ex?searchtype=author&query=Badelek%2C+B">B. Badelek</a>, <a href="/search/nucl-ex?searchtype=author&query=Balestra%2C+F">F. Balestra</a>, <a href="/search/nucl-ex?searchtype=author&query=Barth%2C+J">J. Barth</a>, <a href="/search/nucl-ex?searchtype=author&query=Baum%2C+G">G. Baum</a>, <a href="/search/nucl-ex?searchtype=author&query=Bedfer%2C+Y">Y. Bedfer</a>, <a href="/search/nucl-ex?searchtype=author&query=Berlin%2C+A">A. Berlin</a>, <a href="/search/nucl-ex?searchtype=author&query=Bernhard%2C+J">J. Bernhard</a>, <a href="/search/nucl-ex?searchtype=author&query=Bertini%2C+R">R. Bertini</a>, <a href="/search/nucl-ex?searchtype=author&query=Bicker%2C+K">K. Bicker</a>, <a href="/search/nucl-ex?searchtype=author&query=Bieling%2C+J">J. Bieling</a>, <a href="/search/nucl-ex?searchtype=author&query=Birsa%2C+R">R. Birsa</a>, <a href="/search/nucl-ex?searchtype=author&query=Bisplinghoff%2C+J">J. Bisplinghoff</a>, <a href="/search/nucl-ex?searchtype=author&query=Bordalo%2C+P">P. Bordalo</a>, <a href="/search/nucl-ex?searchtype=author&query=Bradamante%2C+F">F. Bradamante</a>, <a href="/search/nucl-ex?searchtype=author&query=Braun%2C+C">C. Braun</a>, <a href="/search/nucl-ex?searchtype=author&query=Bravar%2C+A">A. Bravar</a>, <a href="/search/nucl-ex?searchtype=author&query=Bressan%2C+A">A. Bressan</a>, <a href="/search/nucl-ex?searchtype=author&query=Buechele%2C+M">M. Buechele</a> , et al. (182 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="1304.0952v2-abstract-short" style="display: inline;"> Large samples of 螞, 危(1385) and 螢(1321) hyperons produced in deep-inelastic muon scattering off a ^6LiD target were collected with the COMPASS experimental setup at CERN. The relative yields of 危(1385)^+, 危(1385)^-, \bar危(1385)^-, \bar危(1385)^+, 螢(1321)^-, and \bar螢(1321)^+ hyperons decaying into 螞(\bar螞)蟺were measured. The heavy hyperon to 螞and heavy antihyperon to \bar螞 yield ratios were found t… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1304.0952v2-abstract-full').style.display = 'inline'; document.getElementById('1304.0952v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1304.0952v2-abstract-full" style="display: none;"> Large samples of 螞, 危(1385) and 螢(1321) hyperons produced in deep-inelastic muon scattering off a ^6LiD target were collected with the COMPASS experimental setup at CERN. The relative yields of 危(1385)^+, 危(1385)^-, \bar危(1385)^-, \bar危(1385)^+, 螢(1321)^-, and \bar螢(1321)^+ hyperons decaying into 螞(\bar螞)蟺were measured. The heavy hyperon to 螞and heavy antihyperon to \bar螞 yield ratios were found to be in the range 3.8% to 5.6% with a relative uncertainty of about 10%. They were used to tune the parameters relevant for strange particle production of the LEPTO Monte Carlo generator. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1304.0952v2-abstract-full').style.display = 'none'; document.getElementById('1304.0952v2-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, 2013; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 3 April, 2013; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> April 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">13 pages, 4 figures and 3 tables, 1 Appendix with 3 figures. Version accepted by the Editor</span> </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/0608047">arXiv:nucl-ex/0608047</a> <span> [<a href="https://arxiv.org/pdf/nucl-ex/0608047">pdf</a>, <a href="https://arxiv.org/ps/nucl-ex/0608047">ps</a>, <a href="https://arxiv.org/format/nucl-ex/0608047">other</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Nuclear Experiment">nucl-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="High Energy Physics - Experiment">hep-ex</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="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.75.015204">10.1103/PhysRevC.75.015204 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Study of the $pd\to ^3\textrm{He} K^+K^-$ and $pd\to ^3\textrm{He} 蠁$ reactions close to threshold </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Bellemann%2C+F">F. Bellemann</a>, <a href="/search/nucl-ex?searchtype=author&query=Berg%2C+A">A. Berg</a>, <a href="/search/nucl-ex?searchtype=author&query=Bisplinghoff%2C+J">J Bisplinghoff</a>, <a href="/search/nucl-ex?searchtype=author&query=Bohlscheid%2C+G">G. Bohlscheid</a>, <a href="/search/nucl-ex?searchtype=author&query=Ernst%2C+J">J. Ernst</a>, <a href="/search/nucl-ex?searchtype=author&query=Henrich%2C+C">C. Henrich</a>, <a href="/search/nucl-ex?searchtype=author&query=Hinterberger%2C+F">F. Hinterberger</a>, <a href="/search/nucl-ex?searchtype=author&query=Ibald%2C+R">R. Ibald</a>, <a href="/search/nucl-ex?searchtype=author&query=Jahn%2C+R">R. Jahn</a>, <a href="/search/nucl-ex?searchtype=author&query=Joosten%2C+R">R. Joosten</a>, <a href="/search/nucl-ex?searchtype=author&query=Kilian%2C+K">K. Kilian</a>, <a href="/search/nucl-ex?searchtype=author&query=Kozela%2C+A">A. Kozela</a>, <a href="/search/nucl-ex?searchtype=author&query=Machner%2C+H">H. Machner</a>, <a href="/search/nucl-ex?searchtype=author&query=Magiera%2C+A">A. Magiera</a>, <a href="/search/nucl-ex?searchtype=author&query=Munkel%2C+J">J. Munkel</a>, <a href="/search/nucl-ex?searchtype=author&query=von+Neumann-Cosel%2C+P">P. von Neumann-Cosel</a>, <a href="/search/nucl-ex?searchtype=author&query=von+Rossen%2C+P">P. von Rossen</a>, <a href="/search/nucl-ex?searchtype=author&query=Schnitker%2C+H">H. Schnitker</a>, <a href="/search/nucl-ex?searchtype=author&query=Scho%2C+K">K. Scho</a>, <a href="/search/nucl-ex?searchtype=author&query=Smyrski%2C+J">J. Smyrski</a>, <a href="/search/nucl-ex?searchtype=author&query=Toelle%2C+R">R. Toelle</a>, <a href="/search/nucl-ex?searchtype=author&query=Wilkin%2C+C">C. Wilkin</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/0608047v1-abstract-short" style="display: inline;"> Two--kaon production in proton--deuteron collisions has been studied at three energies close to threshold using a calibrated magnetic spectrograph to measure the final $^3$He and a vertex detector to measure the $K^+K^-$ pair. Differential and total cross sections are presented for the production of $蠁$--mesons, decaying through $蠁\to K^+K^-$, as well as for prompt $K^+K^-$ production. The promp… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('nucl-ex/0608047v1-abstract-full').style.display = 'inline'; document.getElementById('nucl-ex/0608047v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="nucl-ex/0608047v1-abstract-full" style="display: none;"> Two--kaon production in proton--deuteron collisions has been studied at three energies close to threshold using a calibrated magnetic spectrograph to measure the final $^3$He and a vertex detector to measure the $K^+K^-$ pair. Differential and total cross sections are presented for the production of $蠁$--mesons, decaying through $蠁\to K^+K^-$, as well as for prompt $K^+K^-$ production. The prompt production seems to follow phase space in both its differential distributions and in its energy dependence. The amplitude for the $pd\to ^3${He}$ 蠁$ reaction varies little for excess energies below 22 MeV and the value is consistent with that obtained from a threshold measurement. The angular distribution of the $K^+K^-$ decay pair shows that near threshold the $蠁$--mesons are dominantly produced with polarization $m=0$ along the initial proton direction. No conclusive evidence for $f_0(980)$ production is found in the data. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('nucl-ex/0608047v1-abstract-full').style.display = 'none'; document.getElementById('nucl-ex/0608047v1-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> 28 August, 2006; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> August 2006. </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">13 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev.C75:015204,2007 </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/0403045">arXiv:nucl-ex/0403045</a> <span> [<a href="https://arxiv.org/pdf/nucl-ex/0403045">pdf</a>, <a href="https://arxiv.org/ps/nucl-ex/0403045">ps</a>, <a href="https://arxiv.org/format/nucl-ex/0403045">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"> A Precision Measurement of pp Elastic Scattering Cross Sections at Intermediate Energies </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Albers%2C+D">D. Albers</a>, <a href="/search/nucl-ex?searchtype=author&query=Bauer%2C+F">F. Bauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Bisplinghoff%2C+J">J. Bisplinghoff</a>, <a href="/search/nucl-ex?searchtype=author&query=Bollmann%2C+R">R. Bollmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Buesser%2C+K">K. Buesser</a>, <a href="/search/nucl-ex?searchtype=author&query=Busch%2C+M">M. Busch</a>, <a href="/search/nucl-ex?searchtype=author&query=Daniel%2C+R">R. Daniel</a>, <a href="/search/nucl-ex?searchtype=author&query=Diehl%2C+O">O. Diehl</a>, <a href="/search/nucl-ex?searchtype=author&query=Dohrmann%2C+F">F. Dohrmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Engelhardt%2C+H+P">H. P. Engelhardt</a>, <a href="/search/nucl-ex?searchtype=author&query=Ernst%2C+J">J. Ernst</a>, <a href="/search/nucl-ex?searchtype=author&query=Eversheim%2C+P+D">P. D. Eversheim</a>, <a href="/search/nucl-ex?searchtype=author&query=Gasthuber%2C+M">M. Gasthuber</a>, <a href="/search/nucl-ex?searchtype=author&query=Gebel%2C+R">R. Gebel</a>, <a href="/search/nucl-ex?searchtype=author&query=Greiff%2C+J">J. Greiff</a>, <a href="/search/nucl-ex?searchtype=author&query=Gross%2C+A">A. Gross</a>, <a href="/search/nucl-ex?searchtype=author&query=Gross-Hardt%2C+R">R. Gross-Hardt</a>, <a href="/search/nucl-ex?searchtype=author&query=Heider%2C+S">S. Heider</a>, <a href="/search/nucl-ex?searchtype=author&query=Heine%2C+A">A. Heine</a>, <a href="/search/nucl-ex?searchtype=author&query=Hinterberger%2C+F">F. Hinterberger</a>, <a href="/search/nucl-ex?searchtype=author&query=Hueskes%2C+T">T. Hueskes</a>, <a href="/search/nucl-ex?searchtype=author&query=Igelbrink%2C+M">M. Igelbrink</a>, <a href="/search/nucl-ex?searchtype=author&query=Jeske%2C+M">M. Jeske</a>, <a href="/search/nucl-ex?searchtype=author&query=Langkau%2C+R">R. Langkau</a>, <a href="/search/nucl-ex?searchtype=author&query=Lindlein%2C+J">J. Lindlein</a> , et al. (19 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="nucl-ex/0403045v1-abstract-short" style="display: inline;"> We have measured differential cross sections for \pp elastic scattering with internal fiber targets in the recirculating beam of the proton synchrotron COSY. Measurements were made continuously during acceleration for projectile kinetic energies between 0.23 and 2.59 GeV in the angular range $30 \leq 胃_{c.m.} \leq 90$ deg. Details of the apparatus and the data analysis are given and the resultin… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('nucl-ex/0403045v1-abstract-full').style.display = 'inline'; document.getElementById('nucl-ex/0403045v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="nucl-ex/0403045v1-abstract-full" style="display: none;"> We have measured differential cross sections for \pp elastic scattering with internal fiber targets in the recirculating beam of the proton synchrotron COSY. Measurements were made continuously during acceleration for projectile kinetic energies between 0.23 and 2.59 GeV in the angular range $30 \leq 胃_{c.m.} \leq 90$ deg. Details of the apparatus and the data analysis are given and the resulting excitation functions and angular distributions presented. The precision of each data point is typically better than 4%, and a relative normalization uncertainty of only 2.5% within an excitation function has been reached. The impact on phase shift analysis as well as upper bounds on possible resonant contributions in lower partial waves are discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('nucl-ex/0403045v1-abstract-full').style.display = 'none'; document.getElementById('nucl-ex/0403045v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 23 March, 2004; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2004. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">23 pages 29 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. A22 (2004) 125-148 </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/0403044">arXiv:nucl-ex/0403044</a> <span> [<a href="https://arxiv.org/pdf/nucl-ex/0403044">pdf</a>, <a href="https://arxiv.org/ps/nucl-ex/0403044">ps</a>, <a href="https://arxiv.org/format/nucl-ex/0403044">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.nimb.2005.07.203">10.1016/j.nimb.2005.07.203 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Radiation Damage of Polypropylene Fiber Targets in Storage Rings </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Rohdjess%2C+H">H. Rohdjess</a>, <a href="/search/nucl-ex?searchtype=author&query=Albers%2C+D">D. Albers</a>, <a href="/search/nucl-ex?searchtype=author&query=Bisplinghoff%2C+J">J. Bisplinghoff</a>, <a href="/search/nucl-ex?searchtype=author&query=Bollmann%2C+R">R. Bollmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Buesser%2C+K">K. Buesser</a>, <a href="/search/nucl-ex?searchtype=author&query=Diehl%2C+O">O. Diehl</a>, <a href="/search/nucl-ex?searchtype=author&query=Dohrmann%2C+F">F. Dohrmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Engelhardt%2C+H+-">H. -P. Engelhardt</a>, <a href="/search/nucl-ex?searchtype=author&query=Eversheim%2C+P+D">P. D. Eversheim</a>, <a href="/search/nucl-ex?searchtype=author&query=Greiff%2C+J">J. Greiff</a>, <a href="/search/nucl-ex?searchtype=author&query=Gross%2C+A">A. Gross</a>, <a href="/search/nucl-ex?searchtype=author&query=Gross-Hardt%2C+R">R. Gross-Hardt</a>, <a href="/search/nucl-ex?searchtype=author&query=Hinterberger%2C+F">F. Hinterberger</a>, <a href="/search/nucl-ex?searchtype=author&query=Igelbrink%2C+M">M. Igelbrink</a>, <a href="/search/nucl-ex?searchtype=author&query=Langkau%2C+R">R. Langkau</a>, <a href="/search/nucl-ex?searchtype=author&query=Maier%2C+R">R. Maier</a>, <a href="/search/nucl-ex?searchtype=author&query=Mosel%2C+F">F. Mosel</a>, <a href="/search/nucl-ex?searchtype=author&query=Mueller%2C+M">M. Mueller</a>, <a href="/search/nucl-ex?searchtype=author&query=Muenstermann%2C+M">M. Muenstermann</a>, <a href="/search/nucl-ex?searchtype=author&query=Prasuhn%2C+D">D. Prasuhn</a>, <a href="/search/nucl-ex?searchtype=author&query=von+Rossen%2C+P">P. von Rossen</a>, <a href="/search/nucl-ex?searchtype=author&query=Scheid%2C+H">H. Scheid</a>, <a href="/search/nucl-ex?searchtype=author&query=Schirm%2C+N">N. Schirm</a>, <a href="/search/nucl-ex?searchtype=author&query=Schwandt%2C+F">F. Schwandt</a>, <a href="/search/nucl-ex?searchtype=author&query=Scobel%2C+W">W. Scobel</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="nucl-ex/0403044v1-abstract-short" style="display: inline;"> Thin polypropylene (CH$_2$) fibers have been used for internal experiments in storage rings as an option for hydrogen targets. The change of the hydrogen content due to the radiation dose applied by the circulating proton beam has been investigated in the range $1\cdot10^6$ to $2\cdot10^8$~Gy at beam momenta of 1.5 to 3 GeV/c by comparing the elastic pp-scattering yield to that from inelastic p-… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('nucl-ex/0403044v1-abstract-full').style.display = 'inline'; document.getElementById('nucl-ex/0403044v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="nucl-ex/0403044v1-abstract-full" style="display: none;"> Thin polypropylene (CH$_2$) fibers have been used for internal experiments in storage rings as an option for hydrogen targets. The change of the hydrogen content due to the radiation dose applied by the circulating proton beam has been investigated in the range $1\cdot10^6$ to $2\cdot10^8$~Gy at beam momenta of 1.5 to 3 GeV/c by comparing the elastic pp-scattering yield to that from inelastic p-carbon reactions. It is found that the loss of hydrogen as a function of applied dose receives contributions from a fast and a slow component. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('nucl-ex/0403044v1-abstract-full').style.display = 'none'; document.getElementById('nucl-ex/0403044v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 23 March, 2004; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2004. </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">14 pages 5 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl.Instrum.Meth. B243 (2006) 127-133 </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/0403043">arXiv:nucl-ex/0403043</a> <span> [<a href="https://arxiv.org/pdf/nucl-ex/0403043">pdf</a>, <a href="https://arxiv.org/ps/nucl-ex/0403043">ps</a>, <a href="https://arxiv.org/format/nucl-ex/0403043">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.2005.10.109">10.1016/j.nima.2005.10.109 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Determining Beam Parameters in a Storage Ring with a Cylindrical Hodoscope using Elastic Proton-Proton Scattering </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Rohdjess%2C+H">H. Rohdjess</a>, <a href="/search/nucl-ex?searchtype=author&query=Albers%2C+D">D. Albers</a>, <a href="/search/nucl-ex?searchtype=author&query=Bisplinghoff%2C+J">J. Bisplinghoff</a>, <a href="/search/nucl-ex?searchtype=author&query=Bollmann%2C+R">R. Bollmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Buesser%2C+K">K. Buesser</a>, <a href="/search/nucl-ex?searchtype=author&query=Diehl%2C+O">O. Diehl</a>, <a href="/search/nucl-ex?searchtype=author&query=Dohrmann%2C+F">F. Dohrmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Engelhardt%2C+H+-">H. -P. Engelhardt</a>, <a href="/search/nucl-ex?searchtype=author&query=Eversheim%2C+P+D">P. D. Eversheim</a>, <a href="/search/nucl-ex?searchtype=author&query=Gasthuber%2C+M">M. Gasthuber</a>, <a href="/search/nucl-ex?searchtype=author&query=Greiff%2C+J">J. Greiff</a>, <a href="/search/nucl-ex?searchtype=author&query=Gross%2C+A">A. Gross</a>, <a href="/search/nucl-ex?searchtype=author&query=Gross-Hardt%2C+R">R. Gross-Hardt</a>, <a href="/search/nucl-ex?searchtype=author&query=Hinterberger%2C+F">F. Hinterberger</a>, <a href="/search/nucl-ex?searchtype=author&query=Igelbrink%2C+M">M. Igelbrink</a>, <a href="/search/nucl-ex?searchtype=author&query=Langkau%2C+R">R. Langkau</a>, <a href="/search/nucl-ex?searchtype=author&query=Maier%2C+R">R. Maier</a>, <a href="/search/nucl-ex?searchtype=author&query=Mosel%2C+F">F. Mosel</a>, <a href="/search/nucl-ex?searchtype=author&query=Mueller%2C+M">M. Mueller</a>, <a href="/search/nucl-ex?searchtype=author&query=Muenstermann%2C+M">M. Muenstermann</a>, <a href="/search/nucl-ex?searchtype=author&query=Prasuhn%2C+D">D. Prasuhn</a>, <a href="/search/nucl-ex?searchtype=author&query=von+Rossen%2C+P">P. von Rossen</a>, <a href="/search/nucl-ex?searchtype=author&query=Scheid%2C+H">H. Scheid</a>, <a href="/search/nucl-ex?searchtype=author&query=Schirm%2C+N">N. Schirm</a>, <a href="/search/nucl-ex?searchtype=author&query=Schwandt%2C+F">F. Schwandt</a> , et al. (6 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="nucl-ex/0403043v1-abstract-short" style="display: inline;"> The EDDA-Detector at the Cooler-Synchrotron COSY/J眉lich has been operated with an internal CH$_2$ fiber target to measure proton-proton elastic scattering differential cross sections. For the data analysis knowledge of beam parameters, like position, width and angle, are indispensable. We have developed a method to obtain these values with high precision from the azimuthal and polar angles of th… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('nucl-ex/0403043v1-abstract-full').style.display = 'inline'; document.getElementById('nucl-ex/0403043v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="nucl-ex/0403043v1-abstract-full" style="display: none;"> The EDDA-Detector at the Cooler-Synchrotron COSY/J眉lich has been operated with an internal CH$_2$ fiber target to measure proton-proton elastic scattering differential cross sections. For the data analysis knowledge of beam parameters, like position, width and angle, are indispensable. We have developed a method to obtain these values with high precision from the azimuthal and polar angles of the ejectiles only, by exploiting the coplanarity of the two final state protons with the beam and the kinematic correlation. The formalism is described and results for beam parameters obtained during beam acceleration are given. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('nucl-ex/0403043v1-abstract-full').style.display = 'none'; document.getElementById('nucl-ex/0403043v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 23 March, 2004; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> March 2004. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">20 pages 10 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Nucl.Instrum.Meth.A556:57-65,2006 </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/0209006">arXiv:nucl-ex/0209006</a> <span> [<a href="https://arxiv.org/pdf/nucl-ex/0209006">pdf</a>, <a href="https://arxiv.org/ps/nucl-ex/0209006">ps</a>, <a href="https://arxiv.org/format/nucl-ex/0209006">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.90.142301">10.1103/PhysRevLett.90.142301 <i class="fa fa-external-link" aria-hidden="true"></i></a></span> </div> </div> </div> <p class="title is-5 mathjax"> Measurement of Spin Correlation Parameters A$_{NN}$, A$_{SS}$, and A_${SL}$ at 2.1 GeV in Proton-Proton Elastic Scattering </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Bauer%2C+F">F. Bauer</a>, <a href="/search/nucl-ex?searchtype=author&query=Bisplinghoff%2C+J">J. Bisplinghoff</a>, <a href="/search/nucl-ex?searchtype=author&query=B%C3%BC%C3%9Fer%2C+K">K. B眉脽er</a>, <a href="/search/nucl-ex?searchtype=author&query=Busch%2C+M">M. Busch</a>, <a href="/search/nucl-ex?searchtype=author&query=Colberg%2C+T">T. Colberg</a>, <a href="/search/nucl-ex?searchtype=author&query=Demir%C3%B6rs%2C+L">L. Demir枚rs</a>, <a href="/search/nucl-ex?searchtype=author&query=Dahl%2C+C">C. Dahl</a>, <a href="/search/nucl-ex?searchtype=author&query=Eversheim%2C+P+D">P. D. Eversheim</a>, <a href="/search/nucl-ex?searchtype=author&query=Eyser%2C+O">O. Eyser</a>, <a href="/search/nucl-ex?searchtype=author&query=Felden%2C+O">O. Felden</a>, <a href="/search/nucl-ex?searchtype=author&query=Gebel%2C+R">R. Gebel</a>, <a href="/search/nucl-ex?searchtype=author&query=Greiff%2C+J">J. Greiff</a>, <a href="/search/nucl-ex?searchtype=author&query=Gro%C3%9F-Hardt%2C+R">R. Gro脽-Hardt</a>, <a href="/search/nucl-ex?searchtype=author&query=Hinterberger%2C+F">F. Hinterberger</a>, <a href="/search/nucl-ex?searchtype=author&query=Jahn%2C+R">R. Jahn</a>, <a href="/search/nucl-ex?searchtype=author&query=Jonas%2C+E">E. Jonas</a>, <a href="/search/nucl-ex?searchtype=author&query=Krause%2C+H">H. Krause</a>, <a href="/search/nucl-ex?searchtype=author&query=Lehmann%2C+C">C. Lehmann</a>, <a href="/search/nucl-ex?searchtype=author&query=Lindlein%2C+J">J. Lindlein</a>, <a href="/search/nucl-ex?searchtype=author&query=Maier%2C+R">R. Maier</a>, <a href="/search/nucl-ex?searchtype=author&query=Meinerzhagen%2C+A">A. Meinerzhagen</a>, <a href="/search/nucl-ex?searchtype=author&query=Pauly%2C+C">C. Pauly</a>, <a href="/search/nucl-ex?searchtype=author&query=Prasuhn%2C+D">D. Prasuhn</a>, <a href="/search/nucl-ex?searchtype=author&query=Rohdje%C3%9F%2C+H">H. Rohdje脽</a>, <a href="/search/nucl-ex?searchtype=author&query=Rosendaal%2C+D">D. Rosendaal</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="nucl-ex/0209006v2-abstract-short" style="display: inline;"> At the Cooler Synchrotron COSY/J眉lich spin correlation parameters in elastic proton-proton (pp) scattering have been measured with a 2.11 GeV polarized proton beam and a polarized hydrogen atomic beam target. We report results for A$_{NN}$, A$_{SS}$, and A_${SL}$ for c.m. scattering angles between 30$^o$ and 90$^o$. Our data on A$_{SS}$ -- the first measurement of this observable above 800 MeV -… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('nucl-ex/0209006v2-abstract-full').style.display = 'inline'; document.getElementById('nucl-ex/0209006v2-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="nucl-ex/0209006v2-abstract-full" style="display: none;"> At the Cooler Synchrotron COSY/J眉lich spin correlation parameters in elastic proton-proton (pp) scattering have been measured with a 2.11 GeV polarized proton beam and a polarized hydrogen atomic beam target. We report results for A$_{NN}$, A$_{SS}$, and A_${SL}$ for c.m. scattering angles between 30$^o$ and 90$^o$. Our data on A$_{SS}$ -- the first measurement of this observable above 800 MeV -- clearly disagrees with predictions of available of pp scattering phase shift solutions while A$_{NN}$ and A_${SL}$ are reproduced reasonably well. We show that in the direct reconstruction of the scattering amplitudes from the body of available pp elastic scattering data at 2.1 GeV the number of possible solutions is considerably reduced. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('nucl-ex/0209006v2-abstract-full').style.display = 'none'; document.getElementById('nucl-ex/0209006v2-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> 27 February, 2003; <span class="has-text-black-bis has-text-weight-semibold">v1</span> submitted 6 September, 2002; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2002. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">4 pages, 4 figures</span> </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Journal ref:</span> Phys.Rev.Lett. 90 (2003) 142301 </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/9812011">arXiv:nucl-ex/9812011</a> <span> [<a href="https://arxiv.org/pdf/nucl-ex/9812011">pdf</a>, <a href="https://arxiv.org/ps/nucl-ex/9812011">ps</a>, <a href="https://arxiv.org/format/nucl-ex/9812011">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"> P-wave dominance in the pd -> 3He pi+ pi- reaction near threshold measured with the MOMO experiment at COSY </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=Bellemann%2C+F">F. Bellemann</a>, <a href="/search/nucl-ex?searchtype=author&query=Berg%2C+A">A. Berg</a>, <a href="/search/nucl-ex?searchtype=author&query=Bisplinghoff%2C+J">J. Bisplinghoff</a>, <a href="/search/nucl-ex?searchtype=author&query=Bohlscheid%2C+G">G. Bohlscheid</a>, <a href="/search/nucl-ex?searchtype=author&query=Ernst%2C+J">J. Ernst</a>, <a href="/search/nucl-ex?searchtype=author&query=Henrich%2C+C">C. Henrich</a>, <a href="/search/nucl-ex?searchtype=author&query=Hinterberger%2C+F">F. Hinterberger</a>, <a href="/search/nucl-ex?searchtype=author&query=Ibald%2C+R">R. Ibald</a>, <a href="/search/nucl-ex?searchtype=author&query=Jahn%2C+R">R. Jahn</a>, <a href="/search/nucl-ex?searchtype=author&query=Jarczyk%2C+L">L. Jarczyk</a>, <a href="/search/nucl-ex?searchtype=author&query=Joosten%2C+R">R. Joosten</a>, <a href="/search/nucl-ex?searchtype=author&query=Kozela%2C+A">A. Kozela</a>, <a href="/search/nucl-ex?searchtype=author&query=Machner%2C+H">H. Machner</a>, <a href="/search/nucl-ex?searchtype=author&query=Magiera%2C+A">A. Magiera</a>, <a href="/search/nucl-ex?searchtype=author&query=Maschuw%2C+R">R. Maschuw</a>, <a href="/search/nucl-ex?searchtype=author&query=Mayer-Kuckuk%2C+T">T. Mayer-Kuckuk</a>, <a href="/search/nucl-ex?searchtype=author&query=Mertler%2C+G">G. Mertler</a>, <a href="/search/nucl-ex?searchtype=author&query=Munkel%2C+J">J. Munkel</a>, <a href="/search/nucl-ex?searchtype=author&query=von+Neumann-Cosel%2C+P">P. von Neumann-Cosel</a>, <a href="/search/nucl-ex?searchtype=author&query=Rosendaal%2C+D">D. Rosendaal</a>, <a href="/search/nucl-ex?searchtype=author&query=von+Rossen%2C+P">P. von Rossen</a>, <a href="/search/nucl-ex?searchtype=author&query=Schnitker%2C+H">H. Schnitker</a>, <a href="/search/nucl-ex?searchtype=author&query=Scho%2C+K">K. Scho</a>, <a href="/search/nucl-ex?searchtype=author&query=Smyrski%2C+J">J. Smyrski</a>, <a href="/search/nucl-ex?searchtype=author&query=Strzalkowski%2C+A">A. Strzalkowski</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="nucl-ex/9812011v1-abstract-short" style="display: inline;"> The cross section of the pd -> 3He pi+ pi - reaction has been measured at the MOMO facility in a kinematically complete experiment at a c. m. excess energy of Q = 70 MeV. The energy and angular distributions show that the reaction is dominated by p-wave pi+ pi- pairs. This is in complete contrast to the results of inclusive measurements at somewhat higher energies which show a strong s-wave ABC… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('nucl-ex/9812011v1-abstract-full').style.display = 'inline'; document.getElementById('nucl-ex/9812011v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="nucl-ex/9812011v1-abstract-full" style="display: none;"> The cross section of the pd -> 3He pi+ pi - reaction has been measured at the MOMO facility in a kinematically complete experiment at a c. m. excess energy of Q = 70 MeV. The energy and angular distributions show that the reaction is dominated by p-wave pi+ pi- pairs. This is in complete contrast to the results of inclusive measurements at somewhat higher energies which show a strong s-wave ABC enhancement at low pi pi masses. There are however indications of p-wave pion pairs from other experiments at low Q. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('nucl-ex/9812011v1-abstract-full').style.display = 'none'; document.getElementById('nucl-ex/9812011v1-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 December, 1998; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> December 1998. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">9 pages, 2 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/nucl-ex/9810003">arXiv:nucl-ex/9810003</a> <span> [<a href="https://arxiv.org/pdf/nucl-ex/9810003">pdf</a>, <a href="https://arxiv.org/ps/nucl-ex/9810003">ps</a>, <a href="https://arxiv.org/format/nucl-ex/9810003">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="Nuclear Theory">nucl-th</span> </div> </div> <p class="title is-5 mathjax"> Test of Time Reversal Invariance in Polarized Proton-Deuteron Scattering </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/nucl-ex?searchtype=author&query=TRI+collaboration"> TRI collaboration</a>, <a href="/search/nucl-ex?searchtype=author&query=Bisplinghoff%2C+J">J. Bisplinghoff</a>, <a href="/search/nucl-ex?searchtype=author&query=Ernst%2C+J">J. Ernst</a>, <a href="/search/nucl-ex?searchtype=author&query=Eversheim%2C+P+D">P. D. Eversheim</a>, <a href="/search/nucl-ex?searchtype=author&query=Hinterberger%2C+F">F. Hinterberger</a>, <a href="/search/nucl-ex?searchtype=author&query=Jahn%2C+R">R. Jahn</a>, <a href="/search/nucl-ex?searchtype=author&query=Conzett%2C+H+E">H. E. Conzett</a>, <a href="/search/nucl-ex?searchtype=author&query=Beyer%2C+M">M. Beyer</a>, <a href="/search/nucl-ex?searchtype=author&query=Schieck%2C+H+P+g">H. Paetz gen. Schieck</a>, <a href="/search/nucl-ex?searchtype=author&query=Kretschmer%2C+W">W. Kretschmer</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/9810003v1-abstract-short" style="display: inline;"> A novel test of time-reversal invariance in proton-deuteron scattering is planned as an internal target transmission experiment at the cooler synchrotron COSY. The P-even, T-odd observable is the polarization correlation $A_{y,xz}$ of the total cross section measured using a polarized internal proton beam (polarization $p_y$) and an internal polarized deuterium target (tensor polarization… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('nucl-ex/9810003v1-abstract-full').style.display = 'inline'; document.getElementById('nucl-ex/9810003v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="nucl-ex/9810003v1-abstract-full" style="display: none;"> A novel test of time-reversal invariance in proton-deuteron scattering is planned as an internal target transmission experiment at the cooler synchrotron COSY. The P-even, T-odd observable is the polarization correlation $A_{y,xz}$ of the total cross section measured using a polarized internal proton beam (polarization $p_y$) and an internal polarized deuterium target (tensor polarization $p_{xz}$). Measuring this observable is a true null test of time reversal invariance and therefore allows to reach a high accuracy. Sufficient luminosity can be obtained using a window-less storage cell placed on the axis of the proton beam. Tensor polarized atoms are produced in an atomic beam source based on Stern-Gerlach separation in permanent sextupole magnets and adiabatic high frequency transitions. The total cross section correlation is measured by monitoring the beam transmission in the COSY storage ring mode of operation. The proton beam momentum will be in the range 2-3 GeV/c. This momentum is ideally suited to test possible short range contributions, i.e. natural parity charged $蟻$-type and unnatural parity $a_1$-type meson exchange contributions. The feasibility of the experiment, systematic errors and the expected accuracy are discussed. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('nucl-ex/9810003v1-abstract-full').style.display = 'none'; document.getElementById('nucl-ex/9810003v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 2 October, 1998; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> October 1998. </p> <p class="comments is-size-7"> <span class="has-text-black-bis has-text-weight-semibold">Comments:</span> <span class="has-text-grey-dark mathjax">6 pages, 3 figures, contribution to the fifth international WEIN symposium: a conference on physics beyond the standard model</span> </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a 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