skip to main content


Search for: All records

Creators/Authors contains: "Xiong, Z."

Note: When clicking on a Digital Object Identifier (DOI) number, you will be taken to an external site maintained by the publisher. Some full text articles may not yet be available without a charge during the embargo (administrative interval).
What is a DOI Number?

Some links on this page may take you to non-federal websites. Their policies may differ from this site.

  1. null (Ed.)
  2. null (Ed.)
  3. Free, publicly-accessible full text available June 1, 2025
  4. K+Kpairs may be produced in photonuclear collisions, either from the decays of photoproducedϕ(1020)mesons or directly as nonresonantK+Kpairs. Measurements ofK+Kphotoproduction probe the couplings between theϕ(1020)and charged kaons with photons and nuclear targets. The kaon-proton scattering occurs at energies far above those available elsewhere. We present the first measurement of coherent photoproduction ofK+Kpairs on lead ions in ultraperipheral collisions using the ALICE detector, including the first investigation of directK+Kproduction. There is significantK+Kproduction at low transverse momentum, consistent with coherent photoproduction on lead targets. In the mass range1.1<MKK<1.4GeV/c2above theϕ(1020)resonance, for rapidity|yKK|<0.8andpT,KK<0.1GeV/c, the measured coherent photoproduction cross section isdσ/dy=3.37±0.61(stat)±0.15(syst)mb. The center-of-mass energy per nucleon of the photon-nucleus (Pb) systemWγPb,nranges from 33 to 188 GeV, far higher than previous measurements on heavy-nucleus targets. The cross section is larger than expected forϕ(1020)photoproduction alone. The mass spectrum is fit to a cocktail consisting ofϕ(1020)decays, directK+Kphotoproduction, and interference between the two. The confidence regions for the amplitude and relative phase angle for directK+Kphotoproduction are presented.

    <supplementary-material><permissions><copyright-statement>© 2024 CERN, for the ALICE Collaboration</copyright-statement><copyright-year>2024</copyright-year><copyright-holder>CERN</copyright-holder></permissions></supplementary-material></sec> </div> <a href='#' class='show open-abstract' style='margin-left:10px;'>more »</a> <a href='#' class='hide close-abstract' style='margin-left:10px;'>« less</a> <div class="actions" style="padding-left:10px;"> <span class="reader-count"> Free, publicly-accessible full text available May 1, 2025</span> </div> </div><div class="clearfix"></div> </div> </li> </ol> <div id="pagination-lower" style="display:none;"> <div class="pull-right" style="line-height: 30px;"> <div class="btn-group pagination nomargin"> <a href="#" class="btn btn-sm btn-default noborderradius" disabled="disabled">«<span class="hidden-xs"> Prev</span></a> <a class="dropdown-toggle btn btn-sm btn-default paging-dropdown disabled hidden-xs noborderradius" href="#" data-toggle="dropdown"> <span class="caret"></span> <span class="sr-only">Select page number</span> </a> <a href="#" class="btn btn-sm btn-default noborderradius" disabled="disabled"><span class="hidden-xs">Next </span>»</a> </div> </div> <div class="clearfix"></div> </div> </div> </div> </div> <!-- / basic search results --> </div> </div> <input type='hidden' id='schtype' value=''/> </div> </div> <footer class="row" id="footer-wrapper"> <div class="footer-content"> <div id="footerOSTI" class=" hidden-print"> <ul> <li><a target="_blank" rel="noreferrer" href="http://www.nsf.gov/policies/">Website Policies</a> | <a target="_blank" rel="noreferrer" href="http://www.nsf.gov/about/performance/">Budget and Performance</a> | <a target="_blank" rel="noreferrer" href="http://www.nsf.gov/oig/">Inspector General</a> | <a target="_blank" rel="noreferrer" href="http://www.nsf.gov/policies/privacy.jsp">Privacy</a> | <a target="_blank" rel="noreferrer" href="http://www.nsf.gov/policies/foia.jsp">FOIA</a> | <a target="_blank" rel="noreferrer" href="http://www.nsf.gov/od/odi/notice.jsp">No FEAR Act</a> | <a target="_blank" rel="noreferrer" href="http://usa.gov">USA.gov</a> | <a target="_blank" rel="noreferrer" href="http://www.nsf.gov/policies/access.jsp">Accessibility</a> | <a target="_blank" rel="noreferrer" href="http://www.nsf.gov/policies/nsf_plain_language.jsp">Plain Language</a> | <a target="_blank" rel="noreferrer" href="http://www.nsf.gov/help/contact.jsp">Contact</a> | <a target="_blank" rel="noreferrer" href="https://nsf.gov/help/">Help</a> </li> </ul> The National Science Foundation, 2415 Eisenhower Avenue, Alexandria, Virginia 22314, USA Tel: (703) 292-5111, FIRS: (800) 877-8339 | TDD: (800) 281-8749 </div> </div> </footer> </div> <div id="authorselect" class="modal" tabindex="-1" role="dialog" aria-labelledby="authorselect_label" aria-hidden="true"> <div class="modal-dialog"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button> <div id="authorselect_label">Author Select</div> </div> <form id="authorselect-form" style="margin-bottom: 0px;"> <input type="hidden" name="pg" id="authorselect-pg" value="1" /> <div class="modal-body" id="authorselect_body"> <div class="row"> <div class="col-md-4"> <label for="authorselect-lname">Last Name:</label><br /> <input type="text" name="lname" class="input-sm form-control" id="authorselect-lname" placeholder="Last name" /><br /> </div> <div class="col-md-4"> <label for="authorselect-fname">First Name:</label><br /> <input type="text" name="fname" class="input-sm form-control" id="authorselect-fname" placeholder="First name" /> </div> <div class="col-md-2">  <br /> <a href="#" onclick="$('#authorselect-form').submit(); return false;" class="btn btn-sm btn-default"><span class="fas fa-search"></span><span class="sr-only">Search</span></a> </div> </div> <div class="push_top"></div> <div class="row"> <div class="col-md-12"> <ul class="nav nav-tabs"> <li class="active"><a href="#authorselect-tab-res" id="authorselect-tab-res-btn" data-toggle="tab">Search Results</a></li> <li><a href="#authorselect-tab-sel" id="authorselect-tab-sel-btn" data-toggle="tab">Selected Authors</a></li> </ul> <div class="tab-content"> <div class="tab-pane active" id="authorselect-tab-res" style="max-height: 450px;"> <div class="padding text-muted" id="authorselect-tab-res-content">Type in a name, or the first few letters of a name, in one or both of appropriate search boxes above and select the search button. An attempt will be made to match authors that most closely relate to the text you typed.</div> </div> <div class="tab-pane" id="authorselect-tab-sel" style="max-height: 450px;"> <div class="padding text-muted" id="authorselect-tab-sel-content">No authors are currently selected. Choosing "Select These Authors" will enter a blank value for author search in the parent form.</div> </div> </div> </div> </div> </div> <div class="modal-footer"> <button class="btn btn-sm btn-default" data-dismiss="modal" aria-hidden="true">Close</button> <button class="btn btn-sm btn-default" aria-hidden="true" type="button" id="authorselect_review" onclick="$('#authorselect-tab-sel-btn').click();" style="display: none;">Review Selections</button> <button class="btn btn-sm btn-default" aria-hidden="true" type="button" id="authorselect_submit" onclick="authorSelectAddToForm(); $('#authorselect').modal('hide');">Add Selections</button> </div> </form> </div> </div> </div> <div id="editorselect" class="modal" tabindex="-1" role="dialog" aria-labelledby="editorselect_label" aria-hidden="true"> <div class="modal-dialog"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button> <div id="editorselect_label">Editor Select</div> </div> <form id="editorselect-form" style="margin-bottom: 0px;"> <input type="hidden" name="pg" id="editorselect-pg" value="1" /> <div class="modal-body" id="editorselect_body"> <div class="row"> <div class="col-md-4"> <label for="editorselect-lname">Last Name:</label><br /> <input type="text" name="lname" class="input-sm form-control" id="editorselect-lname" placeholder="Last name" /><br /> </div> <div class="col-md-4"> <label for="editorselect-fname">First Name:</label><br /> <input type="text" name="fname" class="input-sm form-control" id="editorselect-fname" placeholder="First name" /> </div> <div class="col-md-2">  <br /> <a href="#" onclick="$('#editorselect-form').submit(); return false;" class="btn btn-sm btn-default"><span class="fas fa-search"></span><span class="sr-only">Search</span></a> </div> </div> <div class="push_top"></div> <div class="row"> <div class="col-md-12"> <ul class="nav nav-tabs"> <li class="active"><a href="#editorselect-tab-res" id="editorselect-tab-res-btn" data-toggle="tab">Search Results</a></li> <li><a href="#editorselect-tab-sel" id="editorselect-tab-sel-btn" data-toggle="tab">Selected Editors</a></li> </ul> <div class="tab-content"> <div class="tab-pane active" id="editorselect-tab-res" style="max-height: 450px;"> <div class="padding text-muted" id="editorselect-tab-res-content">Type in a name, or the first few letters of a name, in one or both of appropriate search boxes above and select the search button. An attempt will be made to match editors that most closely relate to the text you typed.</div> </div> <div class="tab-pane" id="editorselect-tab-sel" style="max-height: 450px;"> <div class="padding text-muted" id="editorselect-tab-sel-content">No editors are currently selected. Choosing "Select These Editors" will enter a blank value for editor search in the parent form.</div> </div> </div> </div> </div> </div> <div class="modal-footer"> <button class="btn btn-sm btn-default" data-dismiss="modal" aria-hidden="true">Close</button> <button class="btn btn-sm btn-default" aria-hidden="true" type="button" id="editorselect_review" onclick="$('#editorselect-tab-sel-btn').click();" style="display: none;">Review Selections</button> <button class="btn btn-sm btn-default" aria-hidden="true" type="button" id="editorselect_submit" onclick="editorSelectAddToForm();$('#editorselect').modal('hide');">Add Selections</button> </div> </form> </div> </div> </div> <div class="push_top"></div> <!-- External Link Modal --> <div class="modal fade" id="external-link-modal" tabindex="-1" role="dialog"> <div class="modal-dialog" role="document"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close nsf-close" data-dismiss="modal" aria-label="Close"> <span aria-hidden="true">×</span> </button> <h4 class="modal-title"><strong>Warning: Leaving National Science Foundation Website</strong></h4> </div> <div class="modal-body"> <div> <img src="https://par.nsf.gov/img/nsf/nsf_logo.png" width="292" height="53" alt="National Science Foundation Logo" border="0" /> </div> <br> <span>You are now leaving the National Science Foundation website to go to a non-government website.</span> <br> <br> Website: <a id="external-link-url" rel='noopener noreferrer' target='_blank'></a> <br> <br> <span> NSF takes no responsibility for and exercises no control over the views expressed or the accuracy of the information contained on this site. Also be aware that NSF's privacy policy does not apply to this site. </span> <br> <br> </div> <div class="modal-footer"> <div class="pull-right"> <button id="external-link-continue" type="button" data-extlink="" class="btn btn-primary" data-dismiss="modal"><u>Continue to Site</u></button> <button type="button" class="btn btn-default" data-dismiss="modal"><u>Cancel</u></button> </div> </div> </div> </div> </div> <!-- /content --> <input type='hidden' id='webtrend-id' value='dcsngbilzcxafpc7vw2qgbbij_3j2v'/> <input type='hidden' id='js-context-path' value='https://par.nsf.gov/'/> <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.7/latest.js?config=TeX-MML-AM_CHTML" defer></script> <script type="text/x-mathjax-config" defer> MathJax.Hub.Config({ tex2jax: {inlineMath: [['$','$'], ['\\(','\\)']]} }); </script> <noscript></noscript> <script src="https://par.nsf.gov/js/context.js" type="text/javascript" defer></script> <noscript>You must have javascript enabled</noscript> <script src="https://par.nsf.gov/js/libraries/jquery.min.js" type="text/javascript" defer></script> <noscript></noscript> <script src="https://par.nsf.gov/chosen/chosen.jquery.min.js" type="text/javascript" defer></script> <noscript></noscript> <script src="https://par.nsf.gov/js/nsf_pages.extras.min.js" type="text/javascript" defer></script> <noscript></noscript> <script src="https://par.nsf.gov/js/nsf_pages.min.js" type="text/javascript" defer></script> <noscript></noscript> <!--$$$$$$$$$ the following blocks are for WebTrends $$$$$$$$--> <!-- START OF SmartSource Data Collector TAG --> <!-- Copyright (c) 1996-2009 WebTrends Inc. All rights reserved. --> <!-- Version: 8.6.2 --> <!-- Tag Builder Version: 3.0 --> <!-- Created: 5/7/2009 8:32:37 PM --> <script src="https://par.nsf.gov/js/webtrends.min.js" type="text/javascript" defer></script> <noscript></noscript> <!-- ----------------------------------------------------------------------------------- --> <!-- Warning: The two script blocks below must remain inline. Moving them to an external --> <!-- JavaScript include file can cause serious problems with cross-domain tracking. --> <!-- ----------------------------------------------------------------------------------- --> <script src="https://par.nsf.gov/js/webtrend-script.min.js" type="text/javascript" defer></script> <noscript> <div><img alt="" id="DCSIMG" width="1" height="1" src="http://wt.research.gov/dcsngbilzcxafpc7vw2qgbbij_3j2v/njs.gif?dcsuri=/nojavascript&WT.js=No&DCS.dcscfg=1&WT.tv=8.6.2"/></div> </noscript> <script src="https://par.nsf.gov/js/webtrendsactions.min.js" type="text/javascript" defer></script> <noscript></noscript> <!-- $$$$$$$$ End WebTrends $$$$$ --> <!-- /scripts --> </body> <!-- NSF PAGES v.@project.version@ --> </html>