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Astrophysical excesses include the Galactic Center GeV gamma-ray excess detected by the Fermi Gamma-Ray Space Telescope, the AMS antiproton and positron excesses, and the 511 and 3.5 keV X-ray lines. Direct detection excesses include the DAMA/LIBRA annual modulation signal, the XENON1T excess, and low-threshold excesses in solid state detectors. We discuss avenues to resolve these excesses, with actions the field can take over the next several years. Leane, Rebecca K.; Shin, Seodong; Yang, Liang; Adhikari, Govinda; Alhazmi, Haider; Aramaki, Tsuguo; Baxter, Daniel; Calore, Francesca; Caputo, Regina; Cholis, Ilias; Daylan, Tansu; Di Mauro, Mattia; von Doetinchem, Philip; Han, Ke; Hooper, Dan; Horiuchi, Shunsaku; Kim, Doojin; Kong, Kyoungchul; Lang, Rafael F.; Lin, Qing; Linden, Tim; Liu, Jianglai; Macias, Oscar; Mishra-Sharma, Siddharth; Murphy, Alexander; Rajaee, Meshkat; Rodd, Nicholas L.; Parikh, Aditya; Park, Jong-Chul; Sarsa, Maria Luisa; Shockley, Evan; Slatyer, Tracy R.; Takhistov, Volodymyr; Wagner, Felix; Ye, Jingqiang; Zaharijas, Gabrijela; Zhong, Yi-Ming; Zhou, Ning; Zhou, Xiaopeng" /> <meta name="keywords" content="CERN Document Server, WebSearch, CERN Document Server" /> <script type="text/javascript" src="https://cds.cern.ch/js/jquery.min.js"></script>  <link rel="stylesheet" href="https://cds.cern.ch/img/webnews.css" type="text/css" />  <script type="text/javascript" src="https://cds.cern.ch/js/webnews.js?v=20131009"></script> <meta property="fb:app_id" content="137353533001720"/> <script type="text/x-mathjax-config"> MathJax.Hub.Config({ tex2jax: {inlineMath: [['$','$']], processEscapes: true}, showProcessingMessages: false, messageStyle: "none" }); 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min-height: 360px; } </style> <table class="formatRecordTableFullWidth"> <tr> <td class="formatRecordHeader" style="background-image: url('/img/journals.jpg');" colspan="2">  Preprint </td> </tr> <tr><td class="formatRecordLabel"> Report number </td><td style="padding-left:5px;"><a href="http://arxiv.org/abs/arXiv:2203.06859">arXiv:2203.06859</a> ; FERMILAB-CONF-22-191-PPD-T</td></tr> <tr><td class="formatRecordLabel"> Title </td><td style="padding-left:5px;"><b>Snowmass2021 Cosmic Frontier White Paper: Puzzling Excesses in Dark Matter Searches and How to Resolve Them</b></td></tr> <style> .video_control_container, #video_controlbutton { display: none; }#video_detailbox_download {display: none;}#video_detailbox_embed {display: none;}</style> <div class="video_control_container"> <div style="box-sizing: inherit;position: relative;min-height: 1em;margin: 1em 0;background: #f8f8f9;padding: 1em 1.5em;line-height: 1.4285em;transition: opacity .1s ease,color .1s ease,background .1s ease,box-shadow .1s ease,-webkit-box-shadow .1s ease;border-radius: .28571429rem;font-size: 1.1em;margin-top: 0;margin-bottom: 6px;background-color: #f8ffff;color: #276f86;box-shadow: 0 0 0 1px #a9d5de inset,0 0 0 0 transparent;"> <i class="fa fa-info"></i><span style="padding-left: 9px;">If you experience any problem watching the video, click the download button below</span> </div> <a id="video_controlbutton_download" rel="download_button" class="video_controlbutton" href="#">Download</a> <a id="video_controlbutton_embed" class="video_controlbutton" href="#">Embed</a> </div> <div id="video_detailbox_download" style="margin:10px"> </div> <div id="video_detailbox_embed" style="margin:10px"> </div> <tr><td class="formatRecordLabel"> <span style="white-space:nowrap;">Author(s)</span> </td><td style="padding-left:5px;"> <script type="text/javascript"> function toggle_authors_visibility(){ var more = document.getElementById('more'); var link = document.getElementById('link'); var extension = document.getElementById('extension'); if (more.style.display=='none'){ more.style.display = ''; extension.style.display = 'none'; link.innerHTML = "Hide" } else { more.style.display = 'none'; extension.style.display = ''; link.innerHTML = "Show all 39 authors" } link.style.color = "rgb(204,0,0);" } function set_up(){ var extension = document.getElementById('extension'); extension.innerHTML = ""; toggle_authors_visibility(); } </script> <a name="show_hide" /><a href="https://cds.cern.ch/search?f=author&p=Leane%2C%20Rebecca%20K.&ln=en">Leane, Rebecca K.</a> (SLAC ; KIPAC, Menlo Park) ; <a href="https://cds.cern.ch/search?f=author&p=Shin%2C%20Seodong&ln=en">Shin, Seodong</a> (Jeonbuk Natl. U.) ; <a href="https://cds.cern.ch/search?f=author&p=Yang%2C%20Liang&ln=en">Yang, Liang</a> (UC, San Diego) ; <a href="https://cds.cern.ch/search?f=author&p=Adhikari%2C%20Govinda&ln=en">Adhikari, Govinda</a> (UC, San Diego) ; <a href="https://cds.cern.ch/search?f=author&p=Alhazmi%2C%20Haider&ln=en">Alhazmi, Haider</a> (Jazan U.) ; <a href="https://cds.cern.ch/search?f=author&p=Aramaki%2C%20Tsuguo&ln=en">Aramaki, Tsuguo</a> (Northeastern U.) ; <a href="https://cds.cern.ch/search?f=author&p=Baxter%2C%20Daniel&ln=en">Baxter, Daniel</a> (Fermilab) ; <a href="https://cds.cern.ch/search?f=author&p=Calore%2C%20Francesca&ln=en">Calore, Francesca</a> (Annecy, LAPTH) ; <a href="https://cds.cern.ch/search?f=author&p=Caputo%2C%20Regina&ln=en">Caputo, Regina</a> (NASA, Goddard) ; <a href="https://cds.cern.ch/search?f=author&p=Cholis%2C%20Ilias&ln=en">Cholis, Ilias</a> (Oakland U.)<span id="more" style=""> ; <a href="https://cds.cern.ch/search?f=author&p=Daylan%2C%20Tansu&ln=en">Daylan, Tansu</a> (MIT, LNS ; MIT, MKI ; Princeton U., Astrophys. Sci. Dept.) ; <a href="https://cds.cern.ch/search?f=author&p=Di%20Mauro%2C%20Mattia&ln=en">Di Mauro, Mattia</a> (INFN, Turin) ; <a href="https://cds.cern.ch/search?f=author&p=von%20Doetinchem%2C%20Philip&ln=en">von Doetinchem, Philip</a> (Hawaii U.) ; <a href="https://cds.cern.ch/search?f=author&p=Han%2C%20Ke&ln=en">Han, Ke</a> (Shanghai Jiaotong U.) ; <a href="https://cds.cern.ch/search?f=author&p=Hooper%2C%20Dan&ln=en">Hooper, Dan</a> (Fermilab ; Chicago U. ; Chicago U., KICP) ; <a href="https://cds.cern.ch/search?f=author&p=Horiuchi%2C%20Shunsaku&ln=en">Horiuchi, Shunsaku</a> (Virginia Tech. ; Tokyo U., IPMU) ; <a href="https://cds.cern.ch/search?f=author&p=Kim%2C%20Doojin&ln=en">Kim, Doojin</a> (Texas A-M) ; <a href="https://cds.cern.ch/search?f=author&p=Kong%2C%20Kyoungchul&ln=en">Kong, Kyoungchul</a> (Kansas U.) ; <a href="https://cds.cern.ch/search?f=author&p=Lang%2C%20Rafael%20F.&ln=en">Lang, Rafael F.</a> (Purdue U.) ; <a href="https://cds.cern.ch/search?f=author&p=Lin%2C%20Qing&ln=en">Lin, Qing</a> (Hefei, CUST) ; <a href="https://cds.cern.ch/search?f=author&p=Linden%2C%20Tim&ln=en">Linden, Tim</a> (Stockholm U., OKC) ; <a href="https://cds.cern.ch/search?f=author&p=Liu%2C%20Jianglai&ln=en">Liu, Jianglai</a> (Shanghai Jiaotong U. ; Shanghai Jiao Tong U.) ; <a href="https://cds.cern.ch/search?f=author&p=Macias%2C%20Oscar&ln=en">Macias, Oscar</a> (U. Amsterdam, GRAPPA) ; <a href="https://cds.cern.ch/search?f=author&p=Mishra-Sharma%2C%20Siddharth&ln=en">Mishra-Sharma, Siddharth</a> (Harvard U., Phys. Dept. ; IAIFI, Cambridge ; MIT, Cambridge, CTP) ; <a href="https://cds.cern.ch/search?f=author&p=Murphy%2C%20Alexander&ln=en">Murphy, Alexander</a> (U. Edinburgh) ; <a href="https://cds.cern.ch/search?f=author&p=Rajaee%2C%20Meshkat&ln=en">Rajaee, Meshkat</a> (Jeonbuk Natl. U.) ; <a href="https://cds.cern.ch/search?f=author&p=Rodd%2C%20Nicholas%20L.&ln=en">Rodd, Nicholas L.</a> (CERN) ; <a href="https://cds.cern.ch/search?f=author&p=Parikh%2C%20Aditya&ln=en">Parikh, Aditya</a> ; <a href="https://cds.cern.ch/search?f=author&p=Park%2C%20Jong-Chul&ln=en">Park, Jong-Chul</a> (Chungnam Natl. U.) ; <a href="https://cds.cern.ch/search?f=author&p=Sarsa%2C%20Maria%20Luisa&ln=en">Sarsa, Maria Luisa</a> (Zaragoza U.) ; <a href="https://cds.cern.ch/search?f=author&p=Shockley%2C%20Evan&ln=en">Shockley, Evan</a> (Chicago U., KICP) ; <a href="https://cds.cern.ch/search?f=author&p=Slatyer%2C%20Tracy%20R.&ln=en">Slatyer, Tracy R.</a> (MIT, Cambridge, CTP) ; <a href="https://cds.cern.ch/search?f=author&p=Takhistov%2C%20Volodymyr&ln=en">Takhistov, Volodymyr</a> (Tokyo U., IPMU) ; <a href="https://cds.cern.ch/search?f=author&p=Wagner%2C%20Felix&ln=en">Wagner, Felix</a> (Vienna, OAW) ; <a href="https://cds.cern.ch/search?f=author&p=Ye%2C%20Jingqiang&ln=en">Ye, Jingqiang</a> (Columbia U. ; Columbia U., Astron. Astrophys.) ; <a href="https://cds.cern.ch/search?f=author&p=Zaharijas%2C%20Gabrijela&ln=en">Zaharijas, Gabrijela</a> (Nova Gorica U.) ; <a href="https://cds.cern.ch/search?f=author&p=Zhong%2C%20Yi-Ming&ln=en">Zhong, Yi-Ming</a> (Chicago U., KICP) ; <a href="https://cds.cern.ch/search?f=author&p=Zhou%2C%20Ning&ln=en">Zhou, Ning</a> (Shanghai Jiaotong U.) ; <a href="https://cds.cern.ch/search?f=author&p=Zhou%2C%20Xiaopeng&ln=en">Zhou, Xiaopeng</a> (Beihang U.)</span> <span id="extension"></span> <small><i><a id="link" href="#" onclick="toggle_authors_visibility()" style="color:rgb(204,0,0);"></a></i></small><script type="text/javascript">set_up()</script></td></tr>  <script type="text/javascript"> /* * Changes the Imprint title to Date - Duration as requested by RQF0820114 * This is a hack not to touch the general imprint format element */ $(document).ready(function() { var collections = 'PREPRINT ; ConferencePaper'; if (collections.indexOf('E-LEARNING') > -1) { $('.cern-imprint-label').text('Date - Duration'); } }) </script> <tr><td class="formatRecordLabel cern-imprint-label"> Imprint </td><td style="padding-left:5px;">2022-03-14</td></tr> <tr><td class="formatRecordLabel"> Number of pages </td><td style="padding-left:5px;">57</td></tr>  <tr><td class="formatRecordLabel"> Note </td><td style="padding-left:5px;">57 pages, solicited white paper submitted to the Proceedings of the US Community Study on the Future of Particle Physics (Snowmass 2021)</td></tr> <tr><td class="formatRecordLabel"> Presented at </td><td style="padding-left:5px;"><a href="https://cds.cern.ch/record/2722743">2021 Snowmass Summer Study</a>, Seattle, WA, United States, 11 - 20 July 2021, pp.</td></tr> <tr><td class="formatRecordLabel"> Subject category </td><td style="padding-left:5px;">hep-ex ; Particle Physics - Experiment ; astro-ph.HE ; Astrophysics and Astronomy ; hep-ph ; Particle Physics - Phenomenology</td></tr> <tr><td class="formatRecordLabel"> Abstract </td><td style="padding-left:5px;">Intriguing signals with excesses over expected backgrounds have been observed in many astrophysical and terrestrial settings, which could potentially have a dark matter origin. Astrophysical excesses include the Galactic Center GeV gamma-ray excess detected by the Fermi Gamma-Ray Space Telescope, the AMS antiproton and positron excesses, and the 511 and 3.5 keV X-ray lines. Direct detection excesses include the DAMA/LIBRA annual modulation signal, the XENON1T excess, and low-threshold excesses in solid state detectors. We discuss avenues to resolve these excesses, with actions the field can take over the next several years.</td></tr> <tr><td class="formatRecordLabel"> Other source </td><td style="padding-left:5px;"><a href="http://inspirehep.net/record/2051092">Inspire</a></td></tr> <tr><td class="formatRecordLabel"> Copyright/License </td><td style="padding-left:5px;">preprint: (License: <a href="http://arxiv.org/licenses/nonexclusive-distrib/1.0/">arXiv nonexclusive-distrib 1.0</a>)</td></tr> </table> <br /><div style="max-width:1024px;margin:auto"><div style="overflow-x:auto;display:inline;width:100%;"><a href="/record/2806071/plots#0"><img style="vertical-align:middle;" src="https://cds.cern.ch/record/2806071/files/GAPS_GRAMS.png" title=" \it GAPS and GRAMS antideuteron sensitivities in the dark matte parameter space, along with the regions that could potentially explain the Fermi GCE and AMS-02 antiproton excesses \cite{aramaki2020dual}." width="200px"/></a> </div></div><br /> <br/><div><div style="clear: both;"> </div></div> <script type="text/javascript"> // Initially hide: $(".longCaption").hide(); // Allow to toggle visibility: $(".toggleLongCaption").toggle(function(){ $(this).siblings(".longCaption").show('fast'); var thisElem = $(this); thisElem.text(thisElem.text() === "more" ? 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Astrophysical excesses include the Galactic Center GeV gamma-ray excess detected by the Fermi Gamma-Ray Space Telescope, the AMS antiproton and positron excesses, and the 511 and 3.5 keV X-ray lines. Direct detection excesses include the DAMA/LIBRA annual modulation signal, the XENON1T excess, and low-threshold excesses in solid state detectors. We discuss avenues to resolve these excesses, with actions the field can take over the next several years." }); // ]]> </script>  </div> </div> <div style="clear:both;margin-bottom: 0;"></div> </div> <div class="bottom-left"></div><div class="bottom-right"></div> </div> </div></div> <footer id="footer" class="pagefooter clearfix">  <div class="pagefooterstripeleft"> CERN Document Server :: <a class="footer" href="https://cds.cern.ch/?ln=en">Search</a> :: <a class="footer" href="https://cds.cern.ch/submit?ln=en">Submit</a> :: <a class="footer" href="https://cds.cern.ch/youraccount/display?ln=en">Personalize</a> :: <a class="footer" href="https://cds.cern.ch/help/?ln=en">Help</a> :: <a class="footer" href="https://cern.service-now.com/service-portal?id=privacy_policy&se=CDS-Service" target="_blank">Privacy Notice</a> :: <a class="footer" href="https://repository.cern/content-policy" target="_blank">Content Policy</a> :: <a class="footer" href="https://repository.cern/terms" target="_blank">Terms and Conditions</a> <br /> Powered by <a class="footer" href="http://invenio-software.org/">Invenio</a> <br /> Maintained by <a class="footer" href="https://cern.service-now.com/service-portal?id=service_element&name=CDS-Service">CDS Service</a> - Need help? 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