Search for low-mass dark matter with CDMSlite using a profile likelihood fit

Agnese, R.; Aralis, T.; Aramaki, T.; Arnquist, I. J.; Azadbakht, E.; Baker, W.; Banik, S.; Barker, D.; Bauer, D. A.; Binder, T.; Bowles, M. A.; Brink, P. L.; Bunker, R.; Cabrera, B.; Calkins, R.; Cameron, R. A.; Cartaro, C.; Cerdeño, D. G.; Chang, Y. -Y.; Cooley, J.; Cornell, B.; Cushman, P.; De Brienne, F.; Doughty, T.; Fascione, E.; Figueroa-Feliciano, E.; Fink, C. W.; Fritts, M.; Gerbier, G.; Germond, R.; Ghaith, M.; Golwala, S. R.; Harris, H. R.; Herbert, N.; Hong, Z.; Hoppe, E. W.; Hsu, L.; Huber, M. E.; Iyer, V.; Jardin, D.; Jastram, A.; Jena, C.; Kelsey, M. H.; Kennedy, A.; Kubik, A.; Kurinsky, N. A.; Lawrence, R. E.; Loer, B.; Lopez Asamar, E.; Lukens, P.; MacDonell, D.; Mahapatra, R.; Mandic, V.; Mast, N.; Miller, E.; Mirabolfathi, N.; Mohanty, B.; Morales Mendoza, J. D.; Nelson, J.; Neog, H.; Orrell, J. L.; Oser, S. M.; Page, W. A.; Partridge, R.; Pepin, M.; Ponce, F.; Poudel, S.; Pyle, M.; Qiu, H.; Rau, W.; Reisetter, A.; Ren, R.; Reynolds, T.; Roberts, A.; Robinson, A. E.; Rogers, H. E.; Saab, T.; Sadoulet, B.; Sander, J.; Scarff, A.; Schnee, R. W.; Scorza, S.; Senapati, K.; Serfass, B.; Speller, D.; Stanford, C.; Stein, M.; Street, J.; Tanaka, H. A.; Toback, D.; Underwood, R.; Villano, A. N.; von Krosigk, B.; Watkins, S. L.; Wilson, J. S.; Wilson, M. J.; Winchell, J.; Wright, D. H.; Yellin, S.; Young, B. A.; Zhang, X.; Zhao, X.

doi:10.1103/PhysRevD.99.062001

Title: Search for low-mass dark matter with CDMSlite using a profile likelihood fit

Journal Article · Fri Mar 15 00:00:00 EDT 2019 · Physical Review. D.

DOI:https://doi.org/10.1103/PhysRevD.99.062001· OSTI ID:1478020

Agnese, R.; Aralis, T.; Aramaki, T.; Arnquist, I. J.; Azadbakht, E.; Baker, W.; Banik, S.; Barker, D.; Bauer, D. A.; Binder, T.; Bowles, M. A.; Brink, P. L.; Bunker, R.; Cabrera, B.; Calkins, R.; Cameron, R. A.; Cartaro, C.; Cerdeño, D. G.; Chang, Y. -Y.; Cooley, J. more »

The Cryogenic Dark Matter Search low ionization threshold experiment (CDMSlite) searches for interactions between dark matter particles and germanium nuclei in cryogenic detectors. The experiment has achieved a low energy threshold with improved sensitivity to low-mass (<10 GeV/c²) dark matter particles. We present an analysis of the final CDMSlite dataset, taken with a different detector than was used for the two previous CDMSlite datasets. This analysis includes a data “salting” method to protect against bias, improved noise discrimination, background modeling, and the use of profile likelihood methods to search for a dark matter signal in the presence of backgrounds. We achieve an energy threshold of 70 eV and significantly improve the sensitivity for dark matter particles with masses between 2.5 and 10 GeV/c² compared to previous analyses. Here, we set an upper limit on the dark matter-nucleon scattering cross section in germanium of 5.4×10^-42 cm² at 5 GeV/c², a factor of ~2.5 improvement over the previous CDMSlite result.

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Research Organization:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); University of South Dakota, Vermillion SD (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Contributing Organization:: SuperCDMS; SuperCDMS Collaboration

Grant/Contract Number:: AC02-07CH11359; AC02-76SF00515; AC05-76RL01830; 15-S-33; SC0015657

OSTI ID:: 1478020

Alternate ID(s):: OSTI ID: 1526707; OSTI ID: 1546191; OSTI ID: 1598287

Report Number(s):: FERMILAB-PUB-18-435-AE; arXiv:1808.09098; PRVDAQ; oai:inspirehep.net:1691860

Journal Information:: Physical Review. D., Vol. 99, Issue 6; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 75 works

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