Constraints on Heavy Decaying Dark Matter from 570 Days of LHAASO Observations

dc.contributor.authorCao Z.
dc.contributor.authorAharonian F.
dc.contributor.authorAn Q.
dc.contributor.authorAxikegu
dc.contributor.authorBai L.X.
dc.contributor.authorBai Y.X.
dc.contributor.authorBao Y.W.
dc.contributor.authorBastieri D.
dc.contributor.authorBi X.J.
dc.contributor.authorBi Y.J.
dc.contributor.authorCai J.T.
dc.contributor.authorCao Z.
dc.contributor.authorChang J.
dc.contributor.authorChang J.F.
dc.contributor.authorChen E.S.
dc.contributor.authorChen L.
dc.contributor.authorChen L.
dc.contributor.authorChen L.
dc.contributor.authorChen M.J.
dc.contributor.authorChen M.L.
dc.contributor.authorChen Q.H.
dc.contributor.authorChen S.H.
dc.contributor.authorChen S.Z.
dc.contributor.authorChen T.L.
dc.contributor.authorChen Y.
dc.contributor.authorCheng H.L.
dc.contributor.authorCheng N.
dc.contributor.authorCheng Y.D.
dc.contributor.authorCui S.W.
dc.contributor.authorCui X.H.
dc.contributor.authorCui Y.D.
dc.contributor.authorD'Ettorre Piazzoli B.
dc.contributor.authorDai B.Z.
dc.contributor.authorDai H.L.
dc.contributor.authorDai Z.G.
dc.contributor.authorDanzengluobu
dc.contributor.authorDella Volpe D.
dc.contributor.authorDuan K.K.
dc.contributor.authorFan J.H.
dc.contributor.authorFan Y.Z.
dc.contributor.authorFan Z.X.
dc.contributor.authorFang J.
dc.contributor.authorFang K.
dc.contributor.authorFeng C.F.
dc.contributor.authorFeng L.
dc.contributor.authorFeng S.H.
dc.contributor.authorFeng X.T.
dc.contributor.authorFeng Y.L.
dc.contributor.authorGao B.
dc.contributor.authorGao C.D.
dc.contributor.authorGao L.Q.
dc.contributor.authorGao Q.
dc.contributor.authorGao W.
dc.contributor.authorGao W.K.
dc.contributor.authorGe M.M.
dc.contributor.authorGeng L.S.
dc.contributor.authorGong G.H.
dc.contributor.authorGou Q.B.
dc.contributor.authorGu M.H.
dc.contributor.authorGuo F.L.
dc.contributor.authorGuo J.G.
dc.contributor.authorGuo X.L.
dc.contributor.authorGuo Y.Q.
dc.contributor.authorGuo Y.Y.
dc.contributor.authorHan Y.A.
dc.contributor.authorHe H.H.
dc.contributor.authorHe H.N.
dc.contributor.authorHe S.L.
dc.contributor.authorHe X.B.
dc.contributor.authorHe Y.
dc.contributor.authorHeller M.
dc.contributor.authorHor Y.K.
dc.contributor.authorHou C.
dc.contributor.authorHou X.
dc.contributor.authorHu H.B.
dc.contributor.authorHu Q.
dc.contributor.authorHu S.
dc.contributor.authorHu S.C.
dc.contributor.authorHu X.J.
dc.contributor.authorHuang D.H.
dc.contributor.authorHuang W.H.
dc.contributor.authorHuang X.T.
dc.contributor.authorHuang X.Y.
dc.contributor.authorHuang Y.
dc.contributor.authorHuang Z.C.
dc.contributor.authorJi X.L.
dc.contributor.authorJia H.Y.
dc.contributor.authorJia K.
dc.contributor.authorJiang K.
dc.contributor.authorJiang Z.J.
dc.contributor.authorJin M.
dc.contributor.authorKang M.M.
dc.contributor.authorKe T.
dc.contributor.authorKuleshov D.
dc.contributor.authorLevochkin K.
dc.contributor.authorLi B.B.
dc.contributor.authorLi C.
dc.contributor.authorLi C.
dc.contributor.authorLi F.
dc.contributor.authorLi H.B.
dc.contributor.otherMahidol University
dc.date.accessioned2023-06-18T18:15:54Z
dc.date.available2023-06-18T18:15:54Z
dc.date.issued2022-12-23
dc.description.abstractThe 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.citationPhysical Review Letters Vol.129 No.26 (2022)
dc.identifier.doi10.1103/PhysRevLett.129.261103
dc.identifier.eissn10797114
dc.identifier.issn00319007
dc.identifier.pmid36608208
dc.identifier.scopus2-s2.0-85144630843
dc.identifier.urihttps://repository.li.mahidol.ac.th/handle/20.500.14594/86902
dc.rights.holderSCOPUS
dc.subjectPhysics and Astronomy
dc.titleConstraints on Heavy Decaying Dark Matter from 570 Days of LHAASO Observations
dc.typeArticle
mu.datasource.scopushttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85144630843&origin=inward
oaire.citation.issue26
oaire.citation.titlePhysical Review Letters
oaire.citation.volume129
oairecerif.author.affiliationState Key Laboratory of Particle Detection & Electronics
oairecerif.author.affiliationYunnan Observatories
oairecerif.author.affiliationNanjing University
oairecerif.author.affiliationShanghai Astronomical Observatory Chinese Academy of Sciences
oairecerif.author.affiliationInstitute for Nuclear Research of the Russian Academy of Sciences
oairecerif.author.affiliationShandong University
oairecerif.author.affiliationYunnan University
oairecerif.author.affiliationInstitute of High Energy Physics Chinese Academy of Science
oairecerif.author.affiliationUniversity of Chinese Academy of Sciences
oairecerif.author.affiliationGuangzhou University
oairecerif.author.affiliationTsinghua University
oairecerif.author.affiliationSun Yat-Sen University
oairecerif.author.affiliationUniversity of Science and Technology of China
oairecerif.author.affiliationZhengzhou University
oairecerif.author.affiliationInstitiúid Ard-Lénn Bhaile Átha Cliath
oairecerif.author.affiliationUniversità degli Studi di Napoli Federico II
oairecerif.author.affiliationSichuan University
oairecerif.author.affiliationNational Astronomical Observatories Chinese Academy of Sciences
oairecerif.author.affiliationMax-Planck-Institut für Kernphysik
oairecerif.author.affiliationSouthwest Jiaotong University
oairecerif.author.affiliationPurple Mountain Observatory Chinese Academy of Sciences
oairecerif.author.affiliationUniversité de Genève
oairecerif.author.affiliationHebei Normal University
oairecerif.author.affiliationTibet University
oairecerif.author.affiliationTIANFU Cosmic Ray Research Center

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