Constraints on Heavy Decaying Dark Matter from 570 Days of LHAASO Observations
dc.contributor.author | Cao Z. | |
dc.contributor.author | Aharonian F. | |
dc.contributor.author | An Q. | |
dc.contributor.author | Axikegu | |
dc.contributor.author | Bai L.X. | |
dc.contributor.author | Bai Y.X. | |
dc.contributor.author | Bao Y.W. | |
dc.contributor.author | Bastieri D. | |
dc.contributor.author | Bi X.J. | |
dc.contributor.author | Bi Y.J. | |
dc.contributor.author | Cai J.T. | |
dc.contributor.author | Cao Z. | |
dc.contributor.author | Chang J. | |
dc.contributor.author | Chang J.F. | |
dc.contributor.author | Chen E.S. | |
dc.contributor.author | Chen L. | |
dc.contributor.author | Chen L. | |
dc.contributor.author | Chen L. | |
dc.contributor.author | Chen M.J. | |
dc.contributor.author | Chen M.L. | |
dc.contributor.author | Chen Q.H. | |
dc.contributor.author | Chen S.H. | |
dc.contributor.author | Chen S.Z. | |
dc.contributor.author | Chen T.L. | |
dc.contributor.author | Chen Y. | |
dc.contributor.author | Cheng H.L. | |
dc.contributor.author | Cheng N. | |
dc.contributor.author | Cheng Y.D. | |
dc.contributor.author | Cui S.W. | |
dc.contributor.author | Cui X.H. | |
dc.contributor.author | Cui Y.D. | |
dc.contributor.author | D'Ettorre Piazzoli B. | |
dc.contributor.author | Dai B.Z. | |
dc.contributor.author | Dai H.L. | |
dc.contributor.author | Dai Z.G. | |
dc.contributor.author | Danzengluobu | |
dc.contributor.author | Della Volpe D. | |
dc.contributor.author | Duan K.K. | |
dc.contributor.author | Fan J.H. | |
dc.contributor.author | Fan Y.Z. | |
dc.contributor.author | Fan Z.X. | |
dc.contributor.author | Fang J. | |
dc.contributor.author | Fang K. | |
dc.contributor.author | Feng C.F. | |
dc.contributor.author | Feng L. | |
dc.contributor.author | Feng S.H. | |
dc.contributor.author | Feng X.T. | |
dc.contributor.author | Feng Y.L. | |
dc.contributor.author | Gao B. | |
dc.contributor.author | Gao C.D. | |
dc.contributor.author | Gao L.Q. | |
dc.contributor.author | Gao Q. | |
dc.contributor.author | Gao W. | |
dc.contributor.author | Gao W.K. | |
dc.contributor.author | Ge M.M. | |
dc.contributor.author | Geng L.S. | |
dc.contributor.author | Gong G.H. | |
dc.contributor.author | Gou Q.B. | |
dc.contributor.author | Gu M.H. | |
dc.contributor.author | Guo F.L. | |
dc.contributor.author | Guo J.G. | |
dc.contributor.author | Guo X.L. | |
dc.contributor.author | Guo Y.Q. | |
dc.contributor.author | Guo Y.Y. | |
dc.contributor.author | Han Y.A. | |
dc.contributor.author | He H.H. | |
dc.contributor.author | He H.N. | |
dc.contributor.author | He S.L. | |
dc.contributor.author | He X.B. | |
dc.contributor.author | He Y. | |
dc.contributor.author | Heller M. | |
dc.contributor.author | Hor Y.K. | |
dc.contributor.author | Hou C. | |
dc.contributor.author | Hou X. | |
dc.contributor.author | Hu H.B. | |
dc.contributor.author | Hu Q. | |
dc.contributor.author | Hu S. | |
dc.contributor.author | Hu S.C. | |
dc.contributor.author | Hu X.J. | |
dc.contributor.author | Huang D.H. | |
dc.contributor.author | Huang W.H. | |
dc.contributor.author | Huang X.T. | |
dc.contributor.author | Huang X.Y. | |
dc.contributor.author | Huang Y. | |
dc.contributor.author | Huang Z.C. | |
dc.contributor.author | Ji X.L. | |
dc.contributor.author | Jia H.Y. | |
dc.contributor.author | Jia K. | |
dc.contributor.author | Jiang K. | |
dc.contributor.author | Jiang Z.J. | |
dc.contributor.author | Jin M. | |
dc.contributor.author | Kang M.M. | |
dc.contributor.author | Ke T. | |
dc.contributor.author | Kuleshov D. | |
dc.contributor.author | Levochkin K. | |
dc.contributor.author | Li B.B. | |
dc.contributor.author | Li C. | |
dc.contributor.author | Li C. | |
dc.contributor.author | Li F. | |
dc.contributor.author | Li H.B. | |
dc.contributor.other | Mahidol University | |
dc.date.accessioned | 2023-06-18T18:15:54Z | |
dc.date.available | 2023-06-18T18:15:54Z | |
dc.date.issued | 2022-12-23 | |
dc.description.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. | |
dc.identifier.citation | Physical Review Letters Vol.129 No.26 (2022) | |
dc.identifier.doi | 10.1103/PhysRevLett.129.261103 | |
dc.identifier.eissn | 10797114 | |
dc.identifier.issn | 00319007 | |
dc.identifier.pmid | 36608208 | |
dc.identifier.scopus | 2-s2.0-85144630843 | |
dc.identifier.uri | https://repository.li.mahidol.ac.th/handle/20.500.14594/86902 | |
dc.rights.holder | SCOPUS | |
dc.subject | Physics and Astronomy | |
dc.title | Constraints on Heavy Decaying Dark Matter from 570 Days of LHAASO Observations | |
dc.type | Article | |
mu.datasource.scopus | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85144630843&origin=inward | |
oaire.citation.issue | 26 | |
oaire.citation.title | Physical Review Letters | |
oaire.citation.volume | 129 | |
oairecerif.author.affiliation | State Key Laboratory of Particle Detection & Electronics | |
oairecerif.author.affiliation | Yunnan Observatories | |
oairecerif.author.affiliation | Nanjing University | |
oairecerif.author.affiliation | Shanghai Astronomical Observatory Chinese Academy of Sciences | |
oairecerif.author.affiliation | Institute for Nuclear Research of the Russian Academy of Sciences | |
oairecerif.author.affiliation | Shandong University | |
oairecerif.author.affiliation | Yunnan University | |
oairecerif.author.affiliation | Institute of High Energy Physics Chinese Academy of Science | |
oairecerif.author.affiliation | University of Chinese Academy of Sciences | |
oairecerif.author.affiliation | Guangzhou University | |
oairecerif.author.affiliation | Tsinghua University | |
oairecerif.author.affiliation | Sun Yat-Sen University | |
oairecerif.author.affiliation | University of Science and Technology of China | |
oairecerif.author.affiliation | Zhengzhou University | |
oairecerif.author.affiliation | Institiúid Ard-Lénn Bhaile Átha Cliath | |
oairecerif.author.affiliation | Università degli Studi di Napoli Federico II | |
oairecerif.author.affiliation | Sichuan University | |
oairecerif.author.affiliation | National Astronomical Observatories Chinese Academy of Sciences | |
oairecerif.author.affiliation | Max-Planck-Institut für Kernphysik | |
oairecerif.author.affiliation | Southwest Jiaotong University | |
oairecerif.author.affiliation | Purple Mountain Observatory Chinese Academy of Sciences | |
oairecerif.author.affiliation | Université de Genève | |
oairecerif.author.affiliation | Hebei Normal University | |
oairecerif.author.affiliation | Tibet University | |
oairecerif.author.affiliation | TIANFU Cosmic Ray Research Center |