Constraints on Heavy Decaying Dark Matter from 570 Days of LHAASO Observations
Issued Date
2022-12-23
Resource Type
ISSN
00319007
eISSN
10797114
Scopus ID
2-s2.0-85144630843
Pubmed ID
36608208
Journal Title
Physical Review Letters
Volume
129
Issue
26
Rights Holder(s)
SCOPUS
Bibliographic Citation
Physical Review Letters Vol.129 No.26 (2022)
Suggested Citation
Cao Z., Aharonian F., An Q., Axikegu, Bai L.X., Bai Y.X., Bao Y.W., Bastieri D., Bi X.J., Bi Y.J., Cai J.T., Cao Z., Chang J., Chang J.F., Chen E.S., Chen L., Chen L., Chen L., Chen M.J., Chen M.L., Chen Q.H., Chen S.H., Chen S.Z., Chen T.L., Chen Y., Cheng H.L., Cheng N., Cheng Y.D., Cui S.W., Cui X.H., Cui Y.D., D'Ettorre Piazzoli B., Dai B.Z., Dai H.L., Dai Z.G., Danzengluobu, Della Volpe D., Duan K.K., Fan J.H., Fan Y.Z., Fan Z.X., Fang J., Fang K., Feng C.F., Feng L., Feng S.H., Feng X.T., Feng Y.L., Gao B., Gao C.D., Gao L.Q., Gao Q., Gao W., Gao W.K., Ge M.M., Geng L.S., Gong G.H., Gou Q.B., Gu M.H., Guo F.L., Guo J.G., Guo X.L., Guo Y.Q., Guo Y.Y., Han Y.A., He H.H., He H.N., He S.L., He X.B., He Y., Heller M., Hor Y.K., Hou C., Hou X., Hu H.B., Hu Q., Hu S., Hu S.C., Hu X.J., Huang D.H., Huang W.H., Huang X.T., Huang X.Y., Huang Y., Huang Z.C., Ji X.L., Jia H.Y., Jia K., Jiang K., Jiang Z.J., Jin M., Kang M.M., Ke T., Kuleshov D., Levochkin K., Li B.B., Li C., Li C., Li F., Li H.B. Constraints on Heavy Decaying Dark Matter from 570 Days of LHAASO Observations. Physical Review Letters Vol.129 No.26 (2022). doi:10.1103/PhysRevLett.129.261103 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/86902
Title
Constraints on Heavy Decaying Dark Matter from 570 Days of LHAASO Observations
Author(s)
Cao Z.
Aharonian F.
An Q.
Axikegu
Bai L.X.
Bai Y.X.
Bao Y.W.
Bastieri D.
Bi X.J.
Bi Y.J.
Cai J.T.
Cao Z.
Chang J.
Chang J.F.
Chen E.S.
Chen L.
Chen L.
Chen L.
Chen M.J.
Chen M.L.
Chen Q.H.
Chen S.H.
Chen S.Z.
Chen T.L.
Chen Y.
Cheng H.L.
Cheng N.
Cheng Y.D.
Cui S.W.
Cui X.H.
Cui Y.D.
D'Ettorre Piazzoli B.
Dai B.Z.
Dai H.L.
Dai Z.G.
Danzengluobu
Della Volpe D.
Duan K.K.
Fan J.H.
Fan Y.Z.
Fan Z.X.
Fang J.
Fang K.
Feng C.F.
Feng L.
Feng S.H.
Feng X.T.
Feng Y.L.
Gao B.
Gao C.D.
Gao L.Q.
Gao Q.
Gao W.
Gao W.K.
Ge M.M.
Geng L.S.
Gong G.H.
Gou Q.B.
Gu M.H.
Guo F.L.
Guo J.G.
Guo X.L.
Guo Y.Q.
Guo Y.Y.
Han Y.A.
He H.H.
He H.N.
He S.L.
He X.B.
He Y.
Heller M.
Hor Y.K.
Hou C.
Hou X.
Hu H.B.
Hu Q.
Hu S.
Hu S.C.
Hu X.J.
Huang D.H.
Huang W.H.
Huang X.T.
Huang X.Y.
Huang Y.
Huang Z.C.
Ji X.L.
Jia H.Y.
Jia K.
Jiang K.
Jiang Z.J.
Jin M.
Kang M.M.
Ke T.
Kuleshov D.
Levochkin K.
Li B.B.
Li C.
Li C.
Li F.
Li H.B.
Aharonian F.
An Q.
Axikegu
Bai L.X.
Bai Y.X.
Bao Y.W.
Bastieri D.
Bi X.J.
Bi Y.J.
Cai J.T.
Cao Z.
Chang J.
Chang J.F.
Chen E.S.
Chen L.
Chen L.
Chen L.
Chen M.J.
Chen M.L.
Chen Q.H.
Chen S.H.
Chen S.Z.
Chen T.L.
Chen Y.
Cheng H.L.
Cheng N.
Cheng Y.D.
Cui S.W.
Cui X.H.
Cui Y.D.
D'Ettorre Piazzoli B.
Dai B.Z.
Dai H.L.
Dai Z.G.
Danzengluobu
Della Volpe D.
Duan K.K.
Fan J.H.
Fan Y.Z.
Fan Z.X.
Fang J.
Fang K.
Feng C.F.
Feng L.
Feng S.H.
Feng X.T.
Feng Y.L.
Gao B.
Gao C.D.
Gao L.Q.
Gao Q.
Gao W.
Gao W.K.
Ge M.M.
Geng L.S.
Gong G.H.
Gou Q.B.
Gu M.H.
Guo F.L.
Guo J.G.
Guo X.L.
Guo Y.Q.
Guo Y.Y.
Han Y.A.
He H.H.
He H.N.
He S.L.
He X.B.
He Y.
Heller M.
Hor Y.K.
Hou C.
Hou X.
Hu H.B.
Hu Q.
Hu S.
Hu S.C.
Hu X.J.
Huang D.H.
Huang W.H.
Huang X.T.
Huang X.Y.
Huang Y.
Huang Z.C.
Ji X.L.
Jia H.Y.
Jia K.
Jiang K.
Jiang Z.J.
Jin M.
Kang M.M.
Ke T.
Kuleshov D.
Levochkin K.
Li B.B.
Li C.
Li C.
Li F.
Li H.B.
Author's Affiliation
State Key Laboratory of Particle Detection & Electronics
Yunnan Observatories
Nanjing University
Shanghai Astronomical Observatory Chinese Academy of Sciences
Institute for Nuclear Research of the Russian Academy of Sciences
Shandong University
Yunnan University
Institute of High Energy Physics Chinese Academy of Science
University of Chinese Academy of Sciences
Guangzhou University
Tsinghua University
Sun Yat-Sen University
University of Science and Technology of China
Zhengzhou University
Institiúid Ard-Lénn Bhaile Átha Cliath
Università degli Studi di Napoli Federico II
Sichuan University
National Astronomical Observatories Chinese Academy of Sciences
Max-Planck-Institut für Kernphysik
Southwest Jiaotong University
Purple Mountain Observatory Chinese Academy of Sciences
Université de Genève
Hebei Normal University
Tibet University
TIANFU Cosmic Ray Research Center
Yunnan Observatories
Nanjing University
Shanghai Astronomical Observatory Chinese Academy of Sciences
Institute for Nuclear Research of the Russian Academy of Sciences
Shandong University
Yunnan University
Institute of High Energy Physics Chinese Academy of Science
University of Chinese Academy of Sciences
Guangzhou University
Tsinghua University
Sun Yat-Sen University
University of Science and Technology of China
Zhengzhou University
Institiúid Ard-Lénn Bhaile Átha Cliath
Università degli Studi di Napoli Federico II
Sichuan University
National Astronomical Observatories Chinese Academy of Sciences
Max-Planck-Institut für Kernphysik
Southwest Jiaotong University
Purple Mountain Observatory Chinese Academy of Sciences
Université de Genève
Hebei Normal University
Tibet University
TIANFU Cosmic Ray Research Center
Other Contributor(s)
Abstract
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.