Limits on spin-independent interactions of weakly interacting massive particles with nucleons from the two-tower run of the cryogenic dark matter search

被引：280

作者：

Akerib, DS ^{[1
]}

Attisha, MJ

Bailey, CN

Baudis, L

Bauer, DA

Brink, PL

Brusov, PP

Bunker, R

Cabrera, B

Caldwell, DO

Chang, CL

Cooley, J

Crisler, MB

Cushman, P

Daal, M

Dixon, R

Dragowsky, MR

Driscoll, DD

Duong, L

Ferril, R

Filippini, J

Gaitskell, RJ

Golwala, SR

Grant, DR

Hennings-Yeomans, R

Holmgren, D

Huber, ME

Kamat, S

Leclercq, S

Lu, A

Mahapatra, R

Mandic, V

Meunier, P

Mirabolfathi, N

Nelson, H

Nelson, R

Ogburn, RW

Perera, TA

Pyle, M

Ramberg, E

Rau, W

Reisetter, A

Ross, RR

Sadoulet, B

Sander, J

Savage, C

Schnee, RW

Seitz, DN

Serfass, B

Sundqvist, KM

机构：

[1] Case Western Reserve Univ, Dept Phys, Cleveland, OH 44106 USA

[2] Brown Univ, Dept Phys, Providence, RI 02912 USA

[3] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA

[4] Lawrence Berkeley Lab, Berkeley, CA 94720 USA

[5] Santa Clara Univ, Dept Phys, Santa Clara, CA 95053 USA

[6] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA

[7] Stanford Univ, Dept Phys, Stanford, CA 94305 USA

[8] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[9] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA

[10] Univ Colorado, Dept Phys, Denver, CO 80217 USA

[11] Univ Colorado, Hlth Sci Ctr, Denver, CO 80217 USA

[12] Univ Florida, Dept Phys, Gainesville, FL 32611 USA

[13] CALTECH, Dept Phys, Pasadena, CA 91125 USA

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.96.011302

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report new results from the Cryogenic Dark Matter Search (CDMS II) at the Soudan Underground Laboratory. Two towers, each consisting of six detectors, were operated for 74.5 live days, giving spectrum-weighted exposures of 34 (12) kg d for the Ge (Si) targets after cuts, averaged over recoil energies 10-100 keV for a weakly interacting massive particle (WIMP) mass of 60 GeV/c(2). A blind analysis was conducted, incorporating improved techniques for rejecting surface events. No WIMP signal exceeding expected backgrounds was observed. When combined with our previous results from Soudan, the 90% C.L. upper limit on the spin-independent WIMP-nucleon cross section is 1.6x10(-43) cm(2) from Ge and 3x10(-42) cm(2) from Si, for a WIMP mass of 60 GeV/c(2). The combined limit from Ge (Si) is a factor of 2.5 (10) lower than our previous results and constrains predictions of supersymmetric models.

引用

页数：5

共 25 条

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