Boosted dark matter quarrying at surface neutrino detectors

被引：24

作者：

Kim, Doojin ^{[1
]}

Kong, Kyoungchul ^{[2
]}

Park, Jong-Chul ^{[3
]}

Shin, Seodong ^{[4
,5
,6
]}

机构：

[1] CERN, Theoret Phys Dept, CH-1211 Geneva 23, Switzerland

[2] Univ Kansas, Dept Phys & Astron, 1251 Wescoe Hall Dr, Lawrence, KS 66045 USA

[3] Chungnam Natl Univ, Dept Phys, 99 Daehak Ro, Daejeon 34134, South Korea

[4] Univ Chicago, Enrico Fermi Inst, 933 East 56th St, Chicago, IL 60637 USA

[5] Yonsei Univ, Dept Phys, 50 Yonsei Ro, Seoul 03722, South Korea

[6] Yonsei Univ, IPAP, 50 Yonsei Ro, Seoul 03722, South Korea

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2018年 / 08期

基金：

新加坡国家研究基金会;

关键词：

Beyond Standard Model; Cosmology of Theories beyond the SM;

D O I：

10.1007/JHEP08(2018)155

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We propose the idea of "Earth Shielding" to reject cosmic-ray backgrounds, in the search for boosted dark matter at surface neutrino detectors, resulting in the enhancement of the signal-to-background ratio. The identification of cosmic-originating rare signals, especially lacking features, at surface detectors is often considered hopeless due to a vast amount of cosmic-ray-induced background, hence underground experiments are better motivated to avoid such a challenge. We claim that surface detectors can attain remarkable sensitivities to even featureless signals, once restricting to events coming through the Earth from the opposite side of the detector location for the signals leaving appreciable tracks from which the source direction is inferred. By doing so, potential backgrounds in the signal region of interest can be substantially suppressed. To validate our claim, we study experimental reaches at several surface experiments such as SBN Program (MicroBooNE, ICARUS, and SBND) and ProtoDUNE for elastic boosted dark matter signatures stemming from the Galactic Center. We provide a systematic discussion on maximizing associated signal sensitivities.

引用

页数：24

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