Simply split strongly interacting massive particles

dc.contributor.authorBernal, Nicolas [UNESP]
dc.contributor.authorChu, Xiaoyong
dc.contributor.authorPradler, Josef
dc.contributor.institutionUniv Antonio Narino
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionAustrian Acad Sci
dc.date.accessioned2018-11-26T17:34:54Z
dc.date.available2018-11-26T17:34:54Z
dc.date.issued2017-06-20
dc.description.abstractDark matter which interacts strongly with itself, but only feebly with the Standard Model, is a possibility that has been entertained to solve apparent small-scale structure problems that are pertinent to the noninteracting cold dark matter paradigm. In this paper, we study the simple case in which the self-scattering rate today is regulated by kinematics and/or the abundance ratio, through the mass splitting of nearly degenerate pseudo-Dirac fermions chi(1) and chi(2) or real scalars phi(1) and phi(2). We calculate the relic density of these states in a scenario where self-scattering proceeds through off-diagonal couplings with a vector particle V (dark photon) and where the abundance is set through number-depleting 4-to-2 reactions in the hidden sector, or, alternatively, via freeze-in. We study the implications of the considered models and their prospect of solving astrophysical small-scale structure problems. We also show how the introduction of the (meta) stable heavier state may be probed in future dark matter searches.en
dc.description.affiliationUniv Antonio Narino, Ctr Invest, Cra 3 Este 47A-15, Bogota, Colombia
dc.description.affiliationUniv Estadual Paulista, Inst Fis Teor, ICTP South Amer Inst Fundamental Res, R Dr Bento Teobaldo Ferraz 271, BR-01140070 Sao Paulo, Brazil
dc.description.affiliationAustrian Acad Sci, Inst High Energy Phys, Nikolsdorfer Gasse 18, A-1050 Vienna, Austria
dc.description.affiliationUnespUniv Estadual Paulista, Inst Fis Teor, ICTP South Amer Inst Fundamental Res, R Dr Bento Teobaldo Ferraz 271, BR-01140070 Sao Paulo, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipSpanish MINECO
dc.description.sponsorshipAustrian Academy of Sciences
dc.description.sponsorshipEuropean Union's Horizon research and innovation program
dc.description.sponsorshipIdFAPESP: 2011/11973-4
dc.description.sponsorshipIdFAPESP: 2013/01792-8
dc.description.sponsorshipIdSpanish MINECO: FPA2014-54459-P
dc.description.sponsorshipIdEuropean Union's Horizon research and innovation program: 674896
dc.description.sponsorshipIdEuropean Union's Horizon research and innovation program: 690575
dc.format.extent17
dc.identifierhttp://dx.doi.org/10.1103/PhysRevD.95.115023
dc.identifier.citationPhysical Review D. College Pk: Amer Physical Soc, v. 95, n. 11, 17 p., 2017.
dc.identifier.doi10.1103/PhysRevD.95.115023
dc.identifier.fileWOS000404023000004.pdf
dc.identifier.issn2470-0010
dc.identifier.urihttp://hdl.handle.net/11449/162904
dc.identifier.wosWOS:000404023000004
dc.language.isoeng
dc.publisherAmer Physical Soc
dc.relation.ispartofPhysical Review D
dc.relation.ispartofsjr1,801
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.titleSimply split strongly interacting massive particlesen
dc.typeArtigo
dcterms.licensehttp://publish.aps.org/authors/transfer-of-copyright-agreement
dcterms.rightsHolderAmer Physical Soc
unesp.author.orcid0000-0003-1069-490X[1]

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