Search for muon signal from dark matter annihilations in the Sun with the Baksan Underground Scintillator Telescope for 24.12 years

被引：51
|
作者：
Boliev, M. M. [1 ]
Demidov, S. V. [2 ]
Mikheyev, S. P. [2 ]
Suvorova, O. V. [2 ]
机构：
[1] Russian Acad Sci, Inst Nucl Res, Baksan Neutrino Observ, Kabardino 400900, Russia
[2] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia
来源：
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2013年 / 09期
基金：
俄罗斯基础研究基金会;
关键词：
neutrino experiments; dark matter experiments; solar and atmospheric neutrinos; neutrino astronomy; LIMITS; MASS;
D O I：
10.1088/1475-7516/2013/09/019
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present a new dataset, analysis of the neutrino experiment at the Baksan Underground Scintillator Telescope with muon energy threshold about 1 GeV for the longest exposure time toward the Sun. In search for a signal from self-annihilations of dark matter particles in the center of the Sun we use an updated sample of upward through-going unions for 24.12 years of live time. No observable excess has been found in measured muons relative to expected background from neutrinos of atmospheric origin. We present an improved data analysis procedure and describe it in detail. We set the 90% C.L. new upper limits on expected neutrino and muon fluxes from dark matter annihilations in the Sun, on the corresponding annihilation rates and cross sections of their elastic scattering off proton.
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页数：21
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