First Direct-Detection Results on Sub-GeV Dark Matter Using the SENSEI Detector at SNOLAB

被引：4

作者：

Adari, Prakruth ^{[1
,2
]}

Bloch, Itay M. ^{[3
,4
]}

Botti, Ana M. ^{[5
]}

Cababie, Mariano ^{[5
,6
,7
]}

Cancelo, Gustavo ^{[5
]}

Cervantes-Vergara, Brenda A. ^{[8
]}

Crisler, Michael ^{[5
]}

Daal, Miguel ^{[9
]}

Desai, Ansh ^{[10
,11
]}

Drlica-Wagner, Alex ^{[5
,12
,13
]}

Essig, Rouven ^{[1
]}

Estrada, Juan ^{[5
]}

Etzion, Erez ^{[9
]}

Moroni, Guillermo Fernandez ^{[5
]}

Holland, Stephen E. ^{[14
]}

Kehat, Jonathan ^{[9
]}

Korn, Yaron ^{[9
]}

Lawson, Ian ^{[15
]}

Luoma, Steffon ^{[15
]}

Orly, Aviv ^{[9
]}

Perez, Santiago E. ^{[5
,16
,17
]}

Rodrigues, Dario ^{[16
,17
]}

Saffold, Nathan A. ^{[5
]}

Scorza, Silvia ^{[18
]}

Singal, Aman ^{[1
,2
]}

Sofo-Haro, Miguel ^{[5
,19
]}

Stefanazzi, Leandro ^{[5
]}

Stifter, Kelly ^{[5
]}

Tiffenberg, Javier ^{[5
]}

Uemura, Sho ^{[5
]}

Villalpando, Edgar Marrufo ^{[12
]}

Volansky, Tomer ^{[9
]}

Wu, Yikai ^{[1
,2
]}

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

SENSEI Collaboration, Timon

Emken, Timon ^{[20
]}

Xu, Hailin ^{[1
,2
]}

机构：

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

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

[3] Univ Calif Berkeley, Ctr Theoret Phys, Berkeley, CA 94720 USA

[4] Lawrence Berkeley Natl Lab, Theoret Phys Grp, Berkeley, CA 94720 USA

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

[6] Univ Buenos Aires, Dept Phys, FCEN, Buenos Aires, Argentina

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

[8] Univ Nacl Autonoma Mexico, Mexico City, Mexico

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

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

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

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

[13] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA

[14] Lawrence Berkeley Natl Lab, One Cyclotron Rd, Berkeley, CA 94720 USA

[15] SNOLAB, Lively, ON P3Y 1N2, Canada

[16] Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Fis, Buenos Aires, Argentina

[17] Univ Buenos Aires, CONICET, Buenos Aires, Argentina

[18] Univ Grenoble Alpes, CNRS, Grenoble INP, LPSC,IN2P3, F-38000 Grenoble, France

[19] Univ Nacl Cordoba, CNEA, CONICET, Cordoba, Argentina

[20] Stockholm Univ, Oskar Klein Ctr, Dept Phys, SE-10691 Stockholm, Sweden

来源：

PHYSICAL REVIEW LETTERS | 2025年 / 134卷 / 01期

基金：

欧洲研究理事会;

关键词：

CONSTRAINTS;

D O I：

10.1103/PhysRevLett.134.011804

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present the first results from a dark matter search using six Skipper-CCDs in the SENSEI detector operating at SNOLAB. We employ a bias-mitigation technique of hiding approximately 46% of our total data and aggressively mask images to remove backgrounds. Given a total exposure after masking of 100.72 gram-days from well-performing sensors, we observe 55 two-electron events, 4 three-electron events, and no events containing 4-10 electrons. The two-electron events are consistent with pileup from one-electron events. Among the 4 three-electron events, 2 appear in pixels that are likely impacted by detector defects, although not strongly enough to trigger our "hot-pixel" mask. We use these data to set world-leading constraints on sub-GeV dark matter interacting with electrons and nuclei.

引用

页数：8

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