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Title: Measurements of the charm jet cross section and nuclear modification factor in pPb collisions at s NN = 5.02   TeV

Journal Article · · Physics Letters. B
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The CMS Collaboration presents the first measurement of the differential cross section of jets from charm quarks produced in proton-lead (pPb) collisions at a nucleon-nucleon center-of-mass energy of $$\sqrt{s{NN}}$$ = 5.02 TeV, as well as results from charm quark jets in proton-proton (pp) collisions at $$\sqrt{s}$$= 2.76 and 5.02 TeV. By comparing the yields of the pPb and pp collision systems at the same energy, a nuclear modification factor for charm jets in pPb collisions at $$\sqrt{s{NN}}$$ = 5.02 TeV of $$R_{pA}$$ = 0.92 +/- 0.07 (stat) +/- 0.11 (syst) is obtained. This is consistent with an absence of final-state energy loss for charm quarks in pPb collisions. In addition, the fraction of jets coming from charm quarks is found to be consistent with that predicted by PYTHIA 6 for pp collisions at $$\sqrt{s}$$= 2.76 and 5.02 TeV, and is independent of the jet transverse momentum from 55 to 400 GeV.

Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Argonne National Laboratory (ANL), Argonne, IL (United States); Univ. of Illinois, Chicago, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP); USDOE Office of Science (SC), Nuclear Physics (NP); USDOE Office of Nuclear Energy (NE); National Science Foundation (NSF); Welch Foundation
Contributing Organization:
CMS Collaboration
Grant/Contract Number:
AC02-07CH11359; AC52-07NA27344; FG02-94ER40865; C-1845
OSTI ID:
1366548
Alternate ID(s):
OSTI ID: 1339436; OSTI ID: 1474391; OSTI ID: 1666119; OSTI ID: 1666141
Report Number(s):
FERMILAB-PUB-16-633-CMS; CMS-HIN-15-012; CERN-EP-2016-274; arXiv:1612.08972; LLNL-JRNL-737505; S0370269317305294; PII: S0370269317305294
Journal Information:
Physics Letters. B, Journal Name: Physics Letters. B Vol. 772 Journal Issue: C; ISSN 0370-2693
Publisher:
ElsevierCopyright Statement
Country of Publication:
Netherlands
Language:
English
Citation Metrics:
Cited by: 19 works
Citation information provided by
Web of Science

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A.; Alvarez-Muñiz, J.; Arleo, F.</li> <li class="mb-0-5 source"> <span class="mr-1">Journal of Physics G: Nuclear and Particle Physics, Vol. 39, Issue 1</span> <span class="text-muted"><a href="https://doi.org/10.1088/0954-3899/39/1/015010" class="text-muted" target="_blank" rel="noopener noreferrer">https://doi.org/10.1088/0954-3899/39/1/015010<span class="fa fa-external-link" aria-hidden="true"></span></a></span> </li> </ul> </td> <td class="small text-muted biblio-refs-td-secondary"> <span class="biblio-refs-type-badge ml-1 type" data-type="journal">journal</span> </td> <td class="small text-muted biblio-refs-td-secondary biblio-refs-td-secondary-date"><span class="date" data-date="2011-12-08">December 2011</span></td> </tr></tbody></table> </div> </div> </section> <hr class="mt-2 mb-2"/> <section id="section-images" data-list="list_img" class="tab-content-sec osti-curated biblio-section section-scroll" style="scroll-margin-top:110px;"> <div class="biblio-section-navbar active row"> <div class="col"> <h2 class="abstract biblio-section-title mt-0 mb-0-5" style="cursor:pointer;"><span class="fa indicator"></span> Figures / Tables (7) <span class="text-muted list-table-filternum"></span></h2> </div> <div class="col-md-12 col-lg-auto"> <form class="pure-form reference-filter d-print-none"> <div class="small biblio-section-navbar-tool"> <label for="list-table-search-figures" class="sr-only">Search figures / tables: </label> <input type="text" class="list-table-search mt-0 mb-0-5 ml-1" id="list-table-search-figures" placeholder="Search figures / tables ..."> </div> <div class="small biblio-section-navbar-tool"> <select class="list-table-sort mt-0 mb-0-5"> <option value="date">Sort by Date</option> <option value="title">Sort by Title</option> </select> </div> <div class="small biblio-section-navbar-tool"> <button type="reset" class="pure-button list-table-reset mt-0 mb-0-5">↺</button> </div> </form> </div> </div> <div class="row"> <div class="col-sm-12"> <table id="list-table-images" class="truncate-rows list-table list-table-images table-to-tiles" data-rows="1" style="width:100%;"><tbody class="list"> <tr class="biblio-image-tile "><td class="col-sm-3"> <a id="img-1366548-img25035" data-pos="first" href="#modal-image" data-modal-toggle="true" class="biblio-image-tile-a ga-click-event apporder order title desc" data-imgid="1366548-img25035" data-lityx data-category="Extracted Images" data-label="biblio: image thumbnail" data-value="1366548-img25035" data-apporder="p. 5" data-order="1" data-imgid="1366548-img25035" data-imgsrc="/biblio/1366548/image/000/348/0003488/1/0025035.png" data-title="Fig. 1" data-desc="Efficiency of tagging b jets (left) and light parton jets (right) for the high-purity (3+ track), and high-efficiency (2+ track) versions of the simple secondary vertex (SSV) tagger as a function of c jet tagging efficiency. The charm-to-bottom discrimination power is virtually unchanged between the high-efficiency and high-purity versions of the tagger, while the light parton jet mistag rate is reduced by a factor of three at the analysis working point, shown as the closed red cross on the plots. (For interpretation of the references to color in this figure, the reader is referred to the web version of this article.)" data-ostiid="1366548"> <div class="biblio-image-tile-inner"> <small class="name">Fig. 1<small class="pull-right text-muted" style="margin-right: .5em;top: 3px;position: relative;">(p. 5)</small><span class="d-none type">figure</span></small> <img class="img-responsive mt-0-5" alt="Fig. 1" src="/biblio/1366548/image/000/348/0003488/1/t0025035.png"/> </div> </a> </td></tr> <tr class="biblio-image-tile "><td class="col-sm-3"> <a id="img-1366548-img25029" data-pos="" href="#modal-image" data-modal-toggle="true" class="biblio-image-tile-a ga-click-event apporder order title desc" data-imgid="1366548-img25029" data-lityx data-category="Extracted Images" data-label="biblio: image thumbnail" data-value="1366548-img25029" data-apporder="p. 6" data-order="2" data-imgid="1366548-img25029" data-imgsrc="/biblio/1366548/image/000/348/0003488/1/0025029.png" data-title="Fig. 2" data-desc="Corrected secondary vertex mass distributions from pythia+hijing for c jets (green), light parton jets (blue), and b jets (red) in the jet $$p$$<sub>T</sub> range 55–80 GeV/c (upper) and 120–170 GeV/c (lower). Relative normalizations of these three distributions are fit to a distribution from pPb collision data (black). Statistical uncertainties are shown in black for data and for individual simulated flavor components and are shown in blue for the sum of the simulated distributions. The bottom panels of both plots show the ratio of data to simulation. (For interpretation of the colors in this figure, the reader is referred to the web version of this article.)" data-ostiid="1366548"> <div class="biblio-image-tile-inner"> <small class="name">Fig. 2<small class="pull-right text-muted" style="margin-right: .5em;top: 3px;position: relative;">(p. 6)</small><span class="d-none type">figure</span></small> <img class="img-responsive mt-0-5" alt="Fig. 2" src="/biblio/1366548/image/000/348/0003488/1/t0025029.png"/> </div> </a> </td></tr> <tr class="biblio-image-tile "><td class="col-sm-3"> <a id="img-1366548-img25031" data-pos="" href="#modal-image" data-modal-toggle="true" class="biblio-image-tile-a ga-click-event apporder order title desc" data-imgid="1366548-img25031" data-lityx data-category="Extracted Images" data-label="biblio: image thumbnail" data-value="1366548-img25031" data-apporder="p. 7" data-order="3" data-imgid="1366548-img25031" data-imgsrc="/biblio/1366548/image/000/348/0003488/1/0025031.png" data-title="Fig. 3" data-desc="Corrected secondary vertex mass from a pythia 6, tune Z2 simulation for c jets (green), light parton jets (blue) and b jets (red) in the jet $$p$$<sub>T</sub> range 55–80 GeV/c (upper) and 120–170 GeV/c (lower). Relative normalizations of these three distributions are fit to a distribution from pp collision data (black). Statistical uncertainties are shown in black for data and for individual simulated flavor components and are shown in blue for the sum of the simulated distributions. The bottom panels of both plots show the ratio of data to simulation. (For interpretation of the colors in this figure, the reader is referred to the web version of this article.)" data-ostiid="1366548"> <div class="biblio-image-tile-inner"> <small class="name">Fig. 3<small class="pull-right text-muted" style="margin-right: .5em;top: 3px;position: relative;">(p. 7)</small><span class="d-none type">figure</span></small> <img class="img-responsive mt-0-5" alt="Fig. 3" src="/biblio/1366548/image/000/348/0003488/1/t0025031.png"/> </div> </a> </td></tr> <tr class="biblio-image-tile "><td class="col-sm-3"> <a id="img-1366548-img25030" data-pos="" href="#modal-image" data-modal-toggle="true" class="biblio-image-tile-a ga-click-event apporder order title desc" data-imgid="1366548-img25030" data-lityx data-category="Extracted Images" data-label="biblio: image thumbnail" data-value="1366548-img25030" data-apporder="p. 7" data-order="4" data-imgid="1366548-img25030" data-imgsrc="/biblio/1366548/image/000/348/0003488/1/0025030.png" data-title="Fig. 4" data-desc="Tagging purity (upper) and efficiency (lower) for the working point selection of SSVHP > 1.68 in pPb collisions at 5.02 TeV for simulation (open red squares) and data (closed black points). (For interpretation of the references to color in this figure, the reader is referred to the web version of this article.)" data-ostiid="1366548"> <div class="biblio-image-tile-inner"> <small class="name">Fig. 4<small class="pull-right text-muted" style="margin-right: .5em;top: 3px;position: relative;">(p. 7)</small><span class="d-none type">figure</span></small> <img class="img-responsive mt-0-5" alt="Fig. 4" src="/biblio/1366548/image/000/348/0003488/1/t0025030.png"/> </div> </a> </td></tr> <tr class="biblio-image-tile tr-striped"><td class="col-sm-3"> <a id="img-1366548-img25032" data-pos="" href="#modal-image" data-modal-toggle="true" class="biblio-image-tile-a ga-click-event apporder order title desc" data-imgid="1366548-img25032" data-lityx data-category="Extracted Images" data-label="biblio: image thumbnail" data-value="1366548-img25032" data-apporder="p. 8" data-order="5" data-imgid="1366548-img25032" data-imgsrc="/biblio/1366548/image/000/348/0003488/1/0025032.png" data-title="Fig. 5" data-desc="The tagging purity (upper) and efficiency (lower) for the working point selection of SSVHP > 1.68 in pp collisions at 5.02 TeV (square markers) and at 2.76 TeV (circular markers). Purity curves from simulation (open red markers) and data (closed markers) are shown, obtained by fitting templates to the data. The lower plot shows efficiency curves from simulation (open red markers) and the cross-check based on JP tagging. (For interpretation of the references to color in this figure, the reader is referred to the web version of this article.)" data-ostiid="1366548"> <div class="biblio-image-tile-inner"> <small class="name">Fig. 5<small class="pull-right text-muted" style="margin-right: .5em;top: 3px;position: relative;">(p. 8)</small><span class="d-none type">figure</span></small> <img class="img-responsive mt-0-5" alt="Fig. 5" src="/biblio/1366548/image/000/348/0003488/1/t0025032.png"/> </div> </a> </td></tr> <tr class="biblio-image-tile tr-striped"><td class="col-sm-3"> <a id="img-1366548-img25033" data-pos="" href="#modal-image" data-modal-toggle="true" class="biblio-image-tile-a ga-click-event apporder order title desc" data-imgid="1366548-img25033" data-lityx data-category="Extracted Images" data-label="biblio: image thumbnail" data-value="1366548-img25033" data-apporder="p. 8" data-order="6" data-imgid="1366548-img25033" data-imgsrc="/biblio/1366548/image/000/348/0003488/1/0025033.png" data-title="Fig. 6" data-desc="The c jet cross sections (upper panels) and fraction (lower panels) as a function of c jet $$p$$<sub>T</sub> for 5.02 TeV (top figure) and 2.76 TeV pp data (bottom figure), compared to predictions from pythia 6. Systematic uncertainties are shown as filled boxes." data-ostiid="1366548"> <div class="biblio-image-tile-inner"> <small class="name">Fig. 6<small class="pull-right text-muted" style="margin-right: .5em;top: 3px;position: relative;">(p. 8)</small><span class="d-none type">figure</span></small> <img class="img-responsive mt-0-5" alt="Fig. 6" src="/biblio/1366548/image/000/348/0003488/1/t0025033.png"/> </div> </a> </td></tr> <tr class="biblio-image-tile tr-striped"><td class="col-sm-3"> <a id="img-1366548-img25034" data-pos="last" href="#modal-image" data-modal-toggle="true" class="biblio-image-tile-a ga-click-event apporder order title desc" data-imgid="1366548-img25034" data-lityx data-category="Extracted Images" data-label="biblio: image thumbnail" data-value="1366548-img25034" data-apporder="p. 9" data-order="7" data-imgid="1366548-img25034" data-imgsrc="/biblio/1366548/image/000/348/0003488/1/0025034.png" data-title="Fig. 7" data-desc="The c jet cross section (upper panel) and RpA (lower panel) as a function of c jet $$p$$<sub>T</sub> for 5.02 TeV pPb and pp data. Statistical uncertainties are solid black lines, while systematic uncertainties are shown as filled colored boxes. Integrated luminosity uncertainties for pp and pPb data are shown as filled boxes around unity." data-ostiid="1366548"> <div class="biblio-image-tile-inner"> <small class="name">Fig. 7<small class="pull-right text-muted" style="margin-right: .5em;top: 3px;position: relative;">(p. 9)</small><span class="d-none type">figure</span></small> <img class="img-responsive mt-0-5" alt="Fig. 7" src="/biblio/1366548/image/000/348/0003488/1/t0025034.png"/> </div> </a> </td></tr> </tbody></table> </div> </div> </section> <div id="modal-image" class="modal"> <div class="modal-content"> <div class="modal-header"> <span class="close" data-modal-close="true">×</span> <header id="modal-image_label" style="margin:0px;">Image title</header> </div> <div id="modal-image_body" class="modal-body"> </div> </div> </div> <hr class="mt-2 mb-2"/> <section id="section-similar" class="tab-content-sec osti-curated biblio-section section-scroll" style="scroll-margin-top:110px;"> <div class="row"> <div class="col-8" style="padding-right:40px;"> <h2 class="abstract">Similar Records</h2> <div class="" style="line-height:1.6rem;"> <a href="/biblio/1465877" target="_blank">Elliptic Flow of Charm and Strange Hadrons in High-Multiplicity <math display='inline'> <mi>p</mi> <mo>+</mo> <mi>Pb</mi> </math> Collisions at <math display='inline'> <mrow> <msqrt> <mrow> <msub> <mrow> <mi>s</mi> </mrow> <mrow> <mi>NN</mi> </mrow> </msub> </mrow> </msqrt> <mo>=</mo> <mn>8.16</mn> <mtext> </mtext> <mtext> </mtext> <mi>TeV</mi> </mrow> </math></a> <div class="small" style="line-height:1.4rem;"> Journal Article <span style="padding-left: 0.75rem;padding-right: 0.75rem;">·</span> Tue Aug 21 00:00:00 EDT 2018 <span style="padding-left: 0.75rem;padding-right: 0.75rem;">·</span> Physical Review Letters <span style="padding-left: 0.75rem;padding-right: 0.75rem;">·</span> <span class="text-muted" style="padding-right:0.5em;">OSTI ID:</span>1366548 </div> <div class="small" style="line-height:1.4rem;"> <span class="author-link"><a href="/search/author:"Sirunyan, A. 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M."" class="btn btn-link btn-sm"><span class="author" itemprop="author">Aggarwal, M. M.; </span></a></span> <span class="text-muted">+996 more</span> </div> <hr/> <a href="/biblio/1615173" target="_blank">Measurement of prompt ψ(2S) production cross sections in proton–lead and proton–proton collisions at <math altimg='si1.gif' overflow='scroll'> <msqrt> <mrow> <msub> <mrow> <mi>s</mi> </mrow> <mrow> <mi mathvariant='normal'>NN</mi> </mrow> </msub> </mrow> </msqrt> <mo>=</mo> <mn>5.02</mn> <mspace width='0.2em'/> <mtext>TeV</mtext> </math></a> <div class="small" style="line-height:1.4rem;"> Journal Article <span style="padding-left: 0.75rem;padding-right: 0.75rem;">·</span> Fri Mar 01 00:00:00 EST 2019 <span style="padding-left: 0.75rem;padding-right: 0.75rem;">·</span> Physics Letters. B <span style="padding-left: 0.75rem;padding-right: 0.75rem;">·</span> <span class="text-muted" style="padding-right:0.5em;">OSTI ID:</span>1366548 </div> <div class="small" style="line-height:1.4rem;"> <span class="author-link"><a href="/search/author:"Sirunyan, A. M."" class="btn btn-link btn-sm"><span class="author" itemprop="author">Sirunyan, A. M.; </span></a></span> <span class="author-link"><a href="/search/author:"Tumasyan, A."" class="btn btn-link btn-sm"><span class="author" itemprop="author">Tumasyan, A.; </span></a></span> <span class="author-link"><a href="/search/author:"Adam, W."" class="btn btn-link btn-sm"><span class="author" itemprop="author">Adam, W.; </span></a></span> <span class="text-muted">+2272 more</span> </div> </div> </div> <div class="col-4" style="padding-left:40px; border-left:1px solid #ddd;"> <h2 class="abstract">Related Subjects</h2> <div class="small" style="line-height:1.6rem;"> <a href="/search/subject:73 NUCLEAR PHYSICS AND RADIATION PHYSICS">73 NUCLEAR PHYSICS AND RADIATION PHYSICS</a><br/> <a href="/search/subject:72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS">72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS</a><br/> <a href="/search/subject:CMS">CMS</a><br/> <a href="/search/subject:Heavy ions">Heavy ions</a><br/> <a href="/search/subject:Charm tagging">Charm-tagging</a><br/> <a href="/search/subject:Heavy flavor">Heavy-flavor</a><br/> <a href="/search/subject:Physics Physics of elementary particles and fields">Physics - Physics of elementary particles and fields</a><br/> <a href="/search/subject:Physics Nuclear physics and radiation physics">Physics - Nuclear physics and radiation physics</a><br/> </div> </div> </div> </section> </div> </section> <footer class="" style="background-color:#f9f9f9; /* padding-top: 0.5rem; */"> <div class="footer-minor"> <div class="container"> <hr class="footer-separator" /> <div class="text-center" style="margin-top:1.25rem;"> <div class="pure-menu pure-menu-horizontal"> <ul class="pure-menu-list" id="footer-org-menu"> <li class="pure-menu-item d-block d-sm-inline-block"> <a href="https://energy.gov" target="_blank" rel="noopener noreferrer"> <img src="data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==" class="sprite sprite-footer-us-doe-min" alt="U.S. Department of Energy" /> </a> </li> <li class="pure-menu-item d-block d-sm-inline-block"> <a href="https://www.energy.gov/science/office-science" target="_blank" rel="noopener noreferrer"> <img src="data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==" class="sprite sprite-footer-office-of-science-min" alt="Office of Science" /> </a> </li> <li class="pure-menu-item d-block d-sm-inline-block"> <a href="/"> <img src="data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==" class="sprite sprite-footer-osti-min" alt="Office of Scientific and Technical Information" /> </a> </li> </ul> </div> </div> <div class="text-center small" style="margin-top:0.5em;margin-bottom:2.0rem;"> <div class="pure-menu pure-menu-horizontal"> <ul class="pure-menu-list"> <li class="pure-menu-item"><a href="/disclaim" class="pure-menu-link"><span class="fa fa-institution"></span> Website Policies <span class="d-none d-sm-inline" style="color:#737373;">/ Important Links</span></a></li> <li class="pure-menu-item"><a href="/contact" class="pure-menu-link"><span class="fa fa-comments-o"></span> Contact Us</a></li> <li class="d-block d-md-none mb-1"></li> <li class="pure-menu-item"><a href="https://doe.responsibledisclosure.com/hc/en-us" target="_blank" class="pure-menu-link">Vulnerability Disclosure Program</a></li> <li class="d-block d-lg-none mb-1"></li> <li class="pure-menu-item"><a href="https://www.facebook.com/ostigov" target="_blank" rel="noopener noreferrer" class="pure-menu-link social"><span class="fa fa-facebook"></span><span class="sr-only">Facebook</span></a></li> <li class="pure-menu-item"><a href="https://twitter.com/OSTIgov" target="_blank" rel="noopener noreferrer" class="pure-menu-link social"><span class="fa fa-twitter"></span><span class="sr-only">Twitter</span></a></li> <li class="pure-menu-item"><a href="https://www.youtube.com/user/ostigov" target="_blank" rel="noopener noreferrer" class="pure-menu-link social"><span class="fa fa-youtube-play"></span><span class="sr-only">YouTube</span></a></li> </ul> </div> </div> </div> </div> </footer> <link href="/css/ostigov.fonts.240417.1512.css" rel="stylesheet"> <script src="/js/ostigov.240417.1512.js"></script><noscript></noscript> <script defer src="/js/ostigov.biblio.240417.1512.js"></script><noscript></noscript> <script>imageList = $('.biblio-image-tile');</script><noscript></noscript> <script async type="text/javascript" src="/js/Universal-Federated-Analytics-Min.js?agency=DOE" id="_fed_an_ua_tag"></script><noscript></noscript> </body> <!-- OSTI.GOV v.240417.1512 --> </html>