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Constraints on Heavy Decaying Dark Matter from 570 Days of LHAASO Observations
Cao, Zhen1,2,3; Aharonian, F.4,5; An, Q.6,7; Axikegu8; Bai, L. X.9; Bai, Y. X.1,3; Bao, Y. W.10; Bastieri, D.11; Bi, X. J.1,2,3; Bi, Y. J.1,3; Cai, J. T.11; Cao, Zhe6,7; Chang, J.12; Chang, J. F.1,3,6; Chen, E. S.1,2,3; Chen, Liang1,2,3; Chen, Liang13; Chen, Long8; Chen, M. J.1,3; Chen, M. L.1,3,6; Chen, Q. H.8; Chen, S. H.1,2,3; Chen, S. Z.1,3; Chen, T. L.14; Chen, Y.10; Cheng, H. L.2,14,15; Cheng, N.1,3; Cheng, Y. D.1,3; Cui, S. W.16; Cui, X. H.15; Cui, Y. D.17,39; D'Ettorre Piazzoli, B.18; Dai, B. Z.19; Dai, H. L.1,3,6; Dai, Z. G.7; Danzengluobu14; Della Volpe, D.20; Duan, K. K.12; Fan, J. H.11; Fan, Y. Z.12; Fan, Z. X.1,3; Fang, J.19; Fang, K.1,3; Feng, C. F.21; Feng, L.12; Feng, S. H.1,3; Feng, X. T.21; Feng, Y. L.14; Gao, B.1,3; Gao, C. D.21; Gao, L. Q.1,2,3; Gao, Q.14; Gao, W.1,3; Gao, W. K.1,2,3; Ge, M. M.19; Geng, L. S.1,3; Gong, G. H.22; Gou, Q. B.1,3; Gu, M. H.1,3,6; Guo, F. L.13; Guo, J. G.1,2,3; Guo, X. L.8; Guo, Y. Q.1,3; Guo, Y. Y.12; Han, Y. A.23; He, H. H.1,2,3; He, H. N.12; He, S. L.11; He, X. B.17,39; He, Y.8; Heller, M.20; Hor, Y. K.17,39; Hou, C.1,3; Hou X(侯贤)24; Hu, H. B.1,2,3; Hu, Q.7,12; Hu, S.9; Hu, S. C.1,2,3; Hu, X. J.22; Huang, D. H.8; Huang, W. H.21; Huang, X. T.21; Huang, X. Y.12; Huang, Y.1,2,3; Huang, Z. C.8; Ji, X. L.1,3,6; Jia, H. Y.8; Jia, K.21; Jiang, K.6,7; Jiang, Z. J.19; Jin, M.1,3; Kang, M. M.9; Ke, T.1,3; Kuleshov, D.25; Levochkin, K.25; Li, B. B.16; Li, Cheng6,7; Li, Cong1,3; Li, F.1,3,6; Li, H. B.1,3; Li, H. C.1,3; Li, H. Y.7,12; Li, J.7,12; Li, Jian7; Li, Jie1,3,6; Li, K.1,3; Li, W. L.21; Li, X. R.1,3; Li, Xin6,7; Li, Xin8; Li, Y. Z.1,2,3; Li, Zhe1,3; Li, Zhuo26; Liang, E. W.27; Liang, Y. F.27; Lin, S. J.17,39; Liu, B.7; Liu, C.1,3; Liu, D.21; Liu, H.8; Liu, H. D.23; Liu, J.1,3; Liu, J. L.28; Liu, J. S.17,39; Liu, J. Y.1,3; Liu, M. Y.14; Liu, R. Y.10; Liu, S. M.8; Liu, W.1,3; Liu, Y.11; Liu, Y. N.22; Long, W. J.8; Lu, R.19; Luo, Q.16; Lv, H. K.1,3; Ma, B. Q.26; Ma, L. L.1,3; Ma, X. H.1,3; Mao JR(毛基荣)24; Masood, A.8; Min, Z.1,3; Mitthumsiri, W.29; Nan, Y. C.21; Ou, Z. W.17,39; Pang, B. Y.8; Pattarakijwanich, P.29; Pei, Z. Y.11; Qi, M. Y.1,3; Qi, Y. Q.16; Qiao, B. Q.1,3; Qin, J. J.7; Ruffolo, D.29; Sáiz, A.29; Shao, C. Y.17,39; Shao, L.16; Shchegolev, O.25,30; Sheng, X. D.1,3; Shi, J. Y.1,3; Song, H. C.26; Stenkin, Yu. V.25,30; Stepanov, V.25; Su, Y.12; Sun, Q. N.8; Sun, X. N.27; Sun, Z. B.31; Tam, P. H.17,39; Tang, Z. B.6,7; Tian, W. W.2,15; Wang, B. D.1,3; Wang, C.31; Wang, H.8
Source PublicationPhysical Review Letters
Contribution Rank第24完成单位
Indexed ByEI

The kilometer square array (KM2A) of the large high altitude air shower observatory (LHAASO) aims at surveying the northern γ-ray sky at energies above 10 TeV with unprecedented sensitivity. γ-ray observations have long been one of the most powerful tools for dark matter searches, as, e.g., high-energy γ rays could be produced by the decays of heavy dark matter particles. In this Letter, we present the first dark matter analysis with LHAASO-KM2A, using the first 340 days of data from 1/2-KM2A and 230 days of data from 3/4-KM2A. Several regions of interest are used to search for a signal and account for the residual cosmic-ray background after γ/hadron separation. We find no excess of dark matter signals, and thus place some of the strongest γ-ray constraints on the lifetime of heavy dark matter particles with mass between 105 and 109 GeV. Our results with LHAASO are robust, and have important implications for dark matter interpretations of the diffuse astrophysical high-energy neutrino emission. © 2022 American Physical Society.

Funding ProjectN/A
Funding OrganizationN/A
Subject Area天文学 ; 天体物理学 ; 高能天体物理学 ; 核科学技术
MOST Discipline Catalogue理学 ; 理学::天文学 ; 工学 ; 工学::核科学与技术
SubtypeJournal article (JA)
PublisherAmerican Physical Society
EI Accession Number20225213314242
EI KeywordsGamma rays
EI Classification Number657 Space Physics - 657.2 Extraterrestrial Physics and Stellar Phenomena - 931.3 Atomic and Molecular Physics - 932.1 High Energy Physics
Citation statistics
Document Type期刊论文
Affiliation1.Key Laboratory of Particle Astrophyics and Experimental Physics, Division and Computing Center, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China;
2.University of Chinese Academy of Sciences, Beijing, 100049, China;
3.TIANFU Cosmic Ray Research Center, Sichuan, Chengdu, China;
4.Dublin Institute for Advanced Studies, 31 Fitzwilliam Place, 2 Dublin, Ireland;
5.Max-Planck-Institut for Nuclear Physics, P.O. Box 103980, Heidelberg, 69029, Germany;
6.State Key Laboratory of Particle Detection and Electronics, China;
7.University of Science and Technology of China, Anhui, Hefei, 230026, China;
8.School of Physical Science and Technology, School of Information Science and Technology, Southwest Jiaotong University, Sichuan, Chengdu, 610031, China;
9.College of Physics, Sichuan University, Sichuan, Chengdu, 610065, China;
10.School of Astronomy and Space Science, Nanjing University, Jiangsu, Nanjing, 210023, China;
11.Center for Astrophysics, Guangzhou University, Guangdong, Guangzhou, 510006, China;
12.Key Laboratory of Dark Matter and Space Astronomy, Purple Mountain Observatory, Chinese Academy of Sciences, Jiangsu, Nanjing, 210023, China;
13.Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai, 200030, China;
14.Key Laboratory of Cosmic Rays, Tibet University, Ministry of Education, Tibet, Lhasa, 850000, China;
15.National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100101, China;
16.Hebei Normal University, Hebei, Shijiazhuang, 050024, China;
17.School of Physics and Astronomy (Zhuhai), School of Physics (Guangzhou), Sino-French Institute of Nuclear Engineering and Technology (Zhuhai), Sun Yat-sen University, Zhuhai, 519000, China;
18.Dipartimento di Fisica, Università di Napoli Federico II, Complesso Universitario di Monte sant'Angelo, via Cinthia, Napoli, 80126, Italy;
19.School of Physics and Astronomy, Yunnan University, Yunnan, Kunming, 650091, China;
20.Département de Physique Nucléaire et Corpusculaire, Faculté de Sciences, Université de Genève, 24 Quai Ernest Ansermet, Geneva, 1211, Switzerland;
21.Institute of Frontier and Interdisciplinary Science, Shandong University, Shandong, Qingdao, 266237, China;
22.Department of Engineering Physics, Tsinghua University, Beijing, 100084, China;
23.School of Physics and Microelectronics, Zhengzhou University, Henan, Zhengzhou, 450001, China;
24.Yunnan Observatories, Chinese Academy of Sciences, Yunnan, Kunming, 650216, China;
25.Institute for Nuclear Research, Russian Academy of Sciences, Moscow, 117312, Russia;
26.School of Physics, Peking University, Beijing, 100871, China;
27.School of Physical Science and Technology, Guangxi University, Guangxi, Nanning, 530004, China;
28.Tsung-Dao Lee Institute, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai, 200240, China;
29.Department of Physics, Faculty of Science, Mahidol University, Bangkok, 10400, Thailand;
30.Moscow Institute of Physics and Technology, Moscow, 141700, Russia;
31.National Space Science Center, Chinese Academy of Sciences, Beijing, 100190, China;
32.GRAPPA Institute, University of Amsterdam, Amsterdam, 1098 XH, Netherlands;
33.Kavli Institute for the Physics and Mathematics of the Universe (KavliIPMU, WPI), University of Tokyo, Chiba, Kashiwa, 277-8583, Japan;
34.Dipartimento di Fisica Ettore Pancini, Università Degli Studi di Napoli Federico II, Complesso Univ. Monte S. Angelo, Napoli, I-80126, Italy;
35.INFN, Sezione di Napoli, Complesso Univ. Monte S. Angelo, Napoli, I-80126, Italy;
36.Niels Bohr International Academy, Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark;
37.Scuola Superiore Meridionale, Università Degli Studi di Napoli Federico II, Largo San Marcellino 10, Napoli, 80138, Italy;
38.Department of Physics, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, Hong Kong;
39.School of Physics and Astronomy (Zhuhai), School of Physics (Guangzhou), Sino-French Institute of Nuclear Engineering and Technology (Zhuhai), Sun Yat-sen University, Guangdong, Guangzhou, 510275, China
Recommended Citation
GB/T 7714
Cao, Zhen,Aharonian, F.,An, Q.,et al. Constraints on Heavy Decaying Dark Matter from 570 Days of LHAASO Observations[J]. Physical Review Letters,2022,129(26).
APA Cao, Zhen.,Aharonian, F..,An, Q..,Axikegu.,Bai, L. X..,...&Wang, H..(2022).Constraints on Heavy Decaying Dark Matter from 570 Days of LHAASO Observations.Physical Review Letters,129(26).
MLA Cao, Zhen,et al."Constraints on Heavy Decaying Dark Matter from 570 Days of LHAASO Observations".Physical Review Letters 129.26(2022).
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