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Search for Low-Mass WIMPs with SuperCDMS

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arxiv 1402.7137 v2 pith:SVWEWERY submitted 2014-02-28 hep-ex astro-ph.COphysics.ins-det

Search for Low-Mass WIMPs with SuperCDMS

R. Agnese , A.J. Anderson , M. Asai , D. Balakishiyeva , R. Basu Thakur , D.A. Bauer , J. Beaty , J. Billard
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A. Borgland M.A. Bowles D. Brandt P.L. Brink R. Bunker B. Cabrera D.O. Caldwell D.G. Cerdeno H. Chagani Y. Chen M. Cherry J. Cooley B. Cornell C.H. Crewdson P. Cushman M. Daal D. DeVaney P.C.F. Di Stefano E. Do Couto E Silva T. Doughty L. Esteban S. Fallows E. Figueroa-Feliciano G.L. Godfrey S.R. Golwala J. Hall S. Hansen H.R. Harris S.A. Hertel B.A. Hines T. Hofer D. Holmgren L. Hsu M.E. Huber A. Jastram O. Kamaev B. Kara M.H. Kelsey S. Kenany A. Kennedy M. Kiveni K. Koch A. Leder B. Loer E. Lopez Asamar R. Mahapatra V. Mandic C. Martinez K.A. McCarthy N. Mirabolfathi R.A. Moffatt R.H. Nelson L. Novak K. Page R. Partridge M. Pepin A. Phipps M. Platt K. Prasad M. Pyle H. Qiu W. Rau P. Redl A. Reisetter R.W. Resch Y. Ricci M. Ruschman T. Saab B. Sadoulet J. Sander R.L. Schmitt K. Schneck R.W. Schnee S. Scorza D.N. Seitz B. Serfass B. Shank D. Speller A. Tomada S. Upadhyayula A.N. Villano B. Welliver D.H. Wright S. Yellin J.J. Yen B.A. Young J. Zhang
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classification hep-ex astro-ph.COphysics.ins-det
keywords wimpssearchsupercdmswimpwimp-nucleonanalyzedbackgroundblinded
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We report a first search for weakly interacting massive particles (WIMPs) using the background rejection capabilities of SuperCDMS. An exposure of 577 kg-days was analyzed for WIMPs with mass < 30 GeV/c2, with the signal region blinded. Eleven events were observed after unblinding. We set an upper limit on the spin-independent WIMP-nucleon cross section of 1.2e-42 cm2 at 8 GeV/c2. This result is in tension with WIMP interpretations of recent experiments and probes new parameter space for WIMP-nucleon scattering for WIMP masses < 6 GeV/c2.

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