SENSEI: Direct-Detection Results on sub-GeV Dark Matter from a New Skipper CCD

被引：263

作者：

Barak, Liron ^{[1
]}

Bloch, Itay M. ^{[1
]}

Cababie, Mariano ^{[2
,3
,4
]}

Cancelo, Gustavo ^{[4
]}

Chaplinsky, Luke ^{[5
,6
]}

Chierchie, Fernando ^{[4
]}

Crisler, Michael ^{[4
]}

Drlica-Wagner, Alex ^{[4
,7
,8
]}

Essig, Rouven ^{[5
]}

Estrada, Juan ^{[4
]}

Etzion, Erez ^{[1
]}

Moroni, Guillermo Fernandez ^{[4
]}

Gift, Daniel ^{[5
,6
]}

Munagavalasa, Sravan ^{[5
,6
]}

Orly, Aviv ^{[1
]}

Rodrigues, Dario ^{[2
,3
,4
]}

Singal, Aman ^{[6
]}

Haro, Miguel Sofo ^{[4
,9
]}

Stefanazzi, Leandro ^{[4
]}

Tiffenberg, Javier ^{[4
]}

Uemura, Sho ^{[1
]}

Volansky, Tomer ^{[1
]}

Yu, Tien-Tien ^{[10
,11
]}

机构：

[1] Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel

[2] Univ Buenos Aires, Dept Phys, FCEN, Buenos Aires, DF, Argentina

[3] Consejo Nacl Invest Cient & Tecn, IFIBA, Buenos Aires, DF, Argentina

[4] Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA

[5] SUNY Stony Brook, CN Yang Inst Theoret Phys, Stony Brook, NY 11794 USA

[6] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA

[7] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA

[8] Univ Chicago, Dept Astron & Astrophys, 5640 S Ellis Ave, Chicago, IL 60637 USA

[9] CNEA CONICET IB, Ctr Atom Bariloche, San Carlos De Bariloche, Rio Negro, Argentina

[10] Univ Oregon, Dept Phys, Eugene, OR 97403 USA

[11] Univ Oregon, Inst Fundamental Sci, Eugene, OR 97403 USA

来源：

PHYSICAL REVIEW LETTERS | 2020年 / 125卷 / 17期

基金：

欧洲研究理事会; 以色列科学基金会;

关键词：

CONSTRAINTS;

D O I：

10.1103/PhysRevLett.125.171802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present the first direct-detection search for sub-GeV dark matter using a new similar to 2-gram highresistivity Skipper CCD from a dedicated fabrication batch that was optimized for dark matter searches. Using 24 days of data acquired in the MINOS cavern at the Fermi National Accelerator Laboratory, we measure the lowest rates in silicon detectors of events containing one, two, three, or four electrons, and achieve world-leading sensitivity for a large range of sub-GeV dark matter masses. Data taken with different thicknesses of the detector shield suggest a correlation between the rate of high-energy tracks and the rate of single-electron events previously classified as "dark current." We detail key characteristics of the new Skipper CCDs, which augur well for the planned construction of the similar to 100-gram SENSEI experiment at SNOLAB.

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页数：7

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