Search for annual and daily dark-matter modulations with Ge detectors at Baksan

被引：0

作者：

Klimenko, AA

Osetrov, SB

Smolnikov, AA

Vasilyev, SI

Avignone, FT

Brodzinski, RL

Miley, HS

Reeves, JH

机构：

[1] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia

[2] Univ S Carolina, Dept Phys, Columbia, SC 29208 USA

[3] Pacific NW Lab, Richland, WA 99352 USA

来源：

PHYSICS OF ATOMIC NUCLEI | 1998年 / 61卷 / 07期

关键词：

D O I：

暂无

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

An energy threshold of 2 keV was achieved for the 1-kg HP Ge detector in a long-term experiment aimed at searches for cold-dark-matter (CDM) particles. Data from two (Ge-76 and natural Ge) detectors were accumulated and analyzed for a period from May 1995 to March 1997. The effective passive and active shielding, together with pulse-shape discrimination, allowed one to achieve a background of 0.26 count/(kg keV d) for both detectors. New restrictions on the masses of weakly interacting massive particles (WIMP) and on the cross section for their elastic scattering on nuclei are obtained. The Dirac neutrino as a WIMP is ruled out in the range 13 GeV-4.5 TeV, Annual and daily modulations of the CDM signal are investigated. The possibility of detecting CDM particles by means of their inelastic interaction with Ge-73 is considered.

引用

页码：1129 / 1136

页数：8

共 16 条

[1] LIMITS ON COLD DARK MATTER CANDIDATES FROM AN ULTRALOW BACKGROUND GERMANIUM SPECTROMETER [J].

AHLEN, SP ;

AVIGNONE, FT ;

BRODZINSKI, RL ;

DRUKIER, AK ;

GELMINI, G ;

SPERGEL, DN .

PHYSICS LETTERS B, 1987, 195 (04) :603-608

[2]

[Anonymous], APJ

[3]

AVIGNONE FT, 1996, NUCL PHYS B S, V48, P223

[4] SEARCHING FOR DARK-MATTER WITH THE ENRICHED GE DETECTORS OF THE HEIDELBERG-MOSCOW BETA-BETA-EXPERIMENT [J].

BECK, M ;

BENSCH, F ;

BOCKHOLT, J ;

HEUSSER, G ;

KLAPDORKLEINGROTHAUS, HV ;

MAIER, B ;

PETRY, F ;

PIEPKE, A ;

STRECKER, H ;

VOLLINGER, M ;

ZUBER, K ;

BALYSH, A ;

BELYAEV, ST ;

DEMEHIN, A ;

GUROV, A ;

KONDRATENKO, I ;

LEBEDEV, VI ;

MULLER, A .

PHYSICS LETTERS B, 1994, 336 (02) :141-146

[5]

BELLI P, 1996, P 2 WORKSH DARK SID, P177

[6] DIURNAL MODULATION EFFECTS IN COLD DARK MATTER EXPERIMENTS [J].

COLLAR, JI ;

AVIGNONE, FT .

PHYSICS LETTERS B, 1992, 275 (1-2) :181-185

[7] DETECTING COLD DARK-MATTER CANDIDATES [J].

DRUKIER, AK ;

FREESE, K ;

SPERGEL, DN .

PHYSICAL REVIEW D, 1986, 33 (12) :3495-3508

[8] SEARCH FOR SPIN-COUPLED DARK-MATTER BY STUDYING THE AXIAL-VECTOR EXCITATION OF NUCLEI [J].

EJIRI, H ;

FUSHIMI, K ;

OHSUMI, H .

PHYSICS LETTERS B, 1993, 317 (1-2) :14-18

[9] RATES FOR INELASTIC NUCLEAR-EXCITATION BY DARK MATTER PARTICLES [J].

ELLIS, J ;

FLORES, RA ;

LEWIN, JD .

PHYSICS LETTERS B, 1988, 212 (03) :375-380

[10] DETECTABILITY OF CERTAIN DARK-MATTER CANDIDATES [J].

GOODMAN, MW ;

WITTEN, E .

PHYSICAL REVIEW D, 1985, 31 (12) :3059-3063

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