Improved WIMP-search reach of the CDMS II germanium data

Agnese, R.; Anderson, A.J.; Asai, M.; Balakishiyeva, D.; Barker, D.; Thakur, R. Basu; Bauer, D.A.; Billard, J.; Borgland, A.; Bowles, M.A.; Brandt, D.; Brink, P.L.; Bunker, R.; Cabrera, B.; Caldwell, D.O.; Calkins, R.; Cerdeno, D.G.; Chagani, H.; Chen, Y.; Cooley, J.; Cornell, B.; Crewdson, C.H.; Cushman, P.; Daal, M.; Di Stefano, P.C.F.; Doughty, T.; Esteban, L.; Fallows, S.; Figueroa-Feliciano, E.; Godfrey, G.L.; Golwala, S.R.; Hall, J.; Harris, H.R.; Hertel, S.A.; Hofer, T.; Holmgren, D.; Hsu, L.; Huber, M.E.; Jardin, D.; Jastram, A.; Kamaev, O.; Kara, B.; Kelsey, M.H.; Kennedy, A.; Kiveni, M.; Koch, K.; Leder, A.; Loer, B.; Asamar, E. Lopez; Lukens, P.; Mahapatra, R.; Mandic, V.; McCarthy, K.A.; Mirabolfathi, N.; Moffatt, R.A.; Oser, S.M.; Page, K.; Page, W.A.; Partridge, R.; Pepin, M.; Phipps, A.; Prasad, K.; Pyle, M.; Qiu, H.; Rau, W.; Redl, P.; Reisetter, A.; Ricci, Y.; Rogers, H.E.; Saab, T.; Sadoulet, B.; Sander, J.; Schneck, K.; Schnee, R.W.; Scorza, S.; Serfass, B.; Shank, B.; Speller, D.; Toback, D.; Upadhyayula, S.; Villano, A.N.; Welliver, B.; Wilson, J.S.; Wright, D.H.; Yang, X.; Yellin, S.; Yen, J.J.; Young, B.A.; Zhang, J.; Collaboration), (SuperCDMS

doi:10.1103/physrevd.92.072003

Improved WIMP-search reach of the CDMS II germanium data

Agnese, R.; Anderson, A.J.; Asai, M.; Balakishiyeva, D.; Barker, D.; Thakur, R. Basu; Bauer, D.A.; Billard, J.; Borgland, A.; Bowles, M.A.; Brandt, D.; Brink, P.L.; Bunker, R.; Cabrera, B.; Caldwell, D.O.; Calkins, R.; Cerdeno, D.G.; Chagani, H.; Chen, Y.; Cooley, J.; Cornell, B.; Crewdson, C.H.; Cushman, P.; Daal, M.; Di Stefano, P.C.F.; Doughty, T.; Esteban, L.; Fallows, S.; Figueroa-Feliciano, E.; Godfrey, G.L.; Golwala, S.R.; Hall, J.; Harris, H.R.; Hertel, S.A.; Hofer, T.; Holmgren, D.; Hsu, L.; Huber, M.E.; Jardin, D.; Jastram, A.; Kamaev, O.; Kara, B.; Kelsey, M.H.; Kennedy, A.; Kiveni, M.; Koch, K.; Leder, A.; Loer, B.; Asamar, E. Lopez; Lukens, P.; Mahapatra, R.; Mandic, V.; McCarthy, K.A.; Mirabolfathi, N.; Moffatt, R.A.; Oser, S.M.; Page, K.; Page, W.A.; Partridge, R.; Pepin, M.; Phipps, A.; Prasad, K.; Pyle, M.; Qiu, H.; Rau, W.; Redl, P.; Reisetter, A.; Ricci, Y.; Rogers, H.E.; Saab, T.; Sadoulet, B.; Sander, J.; Schneck, K.; Schnee, R.W.; Scorza, S.; Serfass, B.; Shank, B...

Authors

R. Agnese

A.J. Anderson

M. Asai

D. Balakishiyeva

D. Barker

R. Basu Thakur

D.A. Bauer

J. Billard

A. Borgland

M.A. Bowles

D. Brandt

P.L. Brink

R. Bunker

B. Cabrera

D.O. Caldwell

R. Calkins

D.G. Cerdeno

H. Chagani

Y. Chen

J. Cooley

B. Cornell

C.H. Crewdson

P. Cushman

M. Daal

P.C.F. Di Stefano

T. Doughty

L. Esteban

S. Fallows

E. Figueroa-Feliciano

G.L. Godfrey

S.R. Golwala

J. Hall

H.R. Harris

S.A. Hertel

T. Hofer

D. Holmgren

L. Hsu

M.E. Huber

D. Jardin

A. Jastram

O. Kamaev

B. Kara

M.H. Kelsey

A. Kennedy

M. Kiveni

K. Koch

A. Leder

B. Loer

E. Lopez Asamar

P. Lukens

R. Mahapatra

V. Mandic

K.A. McCarthy

N. Mirabolfathi

R.A. Moffatt

S.M. Oser

K. Page

W.A. Page

R. Partridge

M. Pepin

A. Phipps

K. Prasad

M. Pyle

H. Qiu

W. Rau

P. Redl

A. Reisetter

Y. Ricci

H.E. Rogers

T. Saab

B. Sadoulet

J. Sander

K. Schneck

R.W. Schnee

S. Scorza

B. Serfass

B. Shank

D. Speller

D. Toback

S. Upadhyayula

A.N. Villano

B. Welliver

J.S. Wilson

D.H. Wright

X. Yang

S. Yellin

J.J. Yen

B.A. Young

J. Zhang

(SuperCDMS Collaboration)

Abstract

CDMS II data from the five-tower runs at the Soudan Underground Laboratory were reprocessed with an improved charge-pulse fitting algorithm. Two new analysis techniques to reject surface-event backgrounds were applied to the 612 kg days germanium-detector weakly interacting massive particle (WIMP)-search exposure. An extended analysis was also completed by decreasing the 10 keV analysis threshold to ∼5 keV , to increase sensitivity near a WIMP mass of 8 GeV/c 2 . After unblinding, there were zero candidate events above a deposited energy of 10 keV and six events in the lower-threshold analysis. This yielded minimum WIMP-nucleon spin-independent scattering cross-section limits of 1.8×10 −44 and 1.18×10 −41 at 90% confidence for 60 and 8.6 GeV/c 2 WIMPs, respectively. This improves the previous CDMS II result by a factor of 2.4 (2.7) for 60 (8.6) GeV/c 2 WIMPs.

Citation

Agnese, R., Anderson, A., Asai, M., Balakishiyeva, D., Barker, D., Thakur, R. B., …Collaboration), (. (2015). Improved WIMP-search reach of the CDMS II germanium data. Physical Review D, 92(7), Article 072003. https://doi.org/10.1103/physrevd.92.072003

Journal Article Type	Article
Acceptance Date	Oct 12, 2015
Publication Date	Oct 12, 2015
Deposit Date	Oct 21, 2015
Publicly Available Date	Oct 28, 2015
Journal	Physical Review D
Print ISSN	1550-7998
Electronic ISSN	1550-2368
Publisher	American Physical Society
Peer Reviewed	Peer Reviewed
Volume	92
Issue	7
Article Number	072003
DOI	https://doi.org/10.1103/physrevd.92.072003

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