First Leptophobic Dark Matter Search from the Coherent-CAPTAIN-Mills Liquid Argon Detector

被引：11

作者：

Aguilar-Arevalo, A. A. ^{[8
]}

Alves, D. S. M. ^{[6
]}

Biedron, S. ^{[9
]}

Boissevain, J. ^{[1
]}

Borrego, M. ^{[6
]}

Chavez-Estrada, M. ^{[8
]}

Chavez, A. ^{[6
]}

Conrad, J. M. ^{[7
]}

Cooper, R. L. ^{[6
,10
]}

Diaz, A. ^{[7
]}

Distel, J. R. ^{[6
]}

D'Olivo, J. C. ^{[8
]}

Dunton, E. ^{[2
]}

Dutta, B. ^{[11
]}

Elliott, A. ^{[4
]}

Evans, D. ^{[6
]}

Fields, D. ^{[9
]}

Greenwood, J. ^{[4
]}

Gold, M. ^{[9
]}

Gordon, J. ^{[4
]}

Guarincerri, E. ^{[6
]}

Huang, E. C. ^{[6
]}

Kamp, N. ^{[7
]}

Kelsey, C. ^{[6
]}

Knickerbocker, K. ^{[6
]}

Lake, R. ^{[4
]}

Louis, W. C. ^{[6
]}

Mahapatra, R. ^{[11
]}

Maludze, S. ^{[11
]}

Mirabal, J. ^{[6
]}

Moreno, R. ^{[4
]}

Neog, H. ^{[11
]}

de Niverville, P. ^{[6
]}

Pandey, V. ^{[5
]}

Plata-Salas, J. ^{[8
]}

Poulson, D. ^{[6
]}

Ray, H. ^{[5
]}

Renner, E. ^{[6
]}

Schaub, T. J. ^{[9
]}

Shaevitz, M. H. ^{[2
]}

Smith, D. ^{[4
]}

Sondheim, W. ^{[6
]}

Szelc, A. M. ^{[3
]}

Taylor, C. ^{[6
]}

Thompson, W. H. ^{[6
]}

Thornton, R. T. ^{[6
]}

Tripathi, M. ^{[5
]}

Van Berg, R.

Van de Water, R. G. ^{[1
,6
]}

Verma, S. ^{[11
]}

机构：

[1] Bartoszek Engn, Aurora, IL 60506 USA

[2] Columbia Univ, New York, NY 10027 USA

[3] Univ Edinburgh, Edinburgh EH9 3FD, Midlothian, Scotland

[4] Embry Riddle Aeronaut Univ, Prescott, AZ 86301 USA

[5] Univ Florida, Gainesville, FL 32611 USA

[6] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[7] MIT, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[8] Univ Nacl Autonoma Mexico, Mexico City 04510, DF, Mexico

[9] Univ New Mexico, Albuquerque, NM 87131 USA

[10] New Mexico State Univ, Las Cruces, NM 88003 USA

[11] Texas A&M Univ, College Stn, TX 77843 USA

来源：

PHYSICAL REVIEW LETTERS | 2022年 / 129卷 / 02期

基金：

美国国家科学基金会;

关键词：

Compendex;

D O I：

10.1103/PhysRevLett.129.021801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the first results of a search for leptophobic dark matter (DM) from the Coherent-CAPTAIN-Mills (CCM) liquid argon (LAr) detector. An engineering run with 120 photomultiplicr tubes (PMTs) and 17.9 x 10(20) protons on target (POT) was performed in fall 2019 to study the characteristics of the CCM detector. The operation of this 10-ton detector was strictly light based with a threshold of 50 keV and used coherent elastic scattering off argon nuclei to detect DM. Despite only 1.5 months of accumulated luminosity, contaminated LAr, and nonoptimized shielding, CCM's first engineering run has already achieved sensitivity to previously unexplored parameter space of light dark matter models with a baryonic vector portal. With an expected background of 115 005 events, we observe 115 005 + 16.5 events which is compatible with background expectations. For a benchmark mediator-to-DM mass ratio of m(VB)/m(chi) = 2.1, DM masses within the range 9 MeV <= m(chi) <= 50 MeV are excluded at 90% C. L. in the leptophobic model after applying the Feldman-Cousins test statistic. CCM's upgraded run with 200 PMTs, filtered LAr, improved shielding, and 10 times more POT will be able to exclude the remaining thermal relic density parameter space of this model, as well as probe new parameter space of other leptophobic DM models.

引用

页数：5

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