Heavy quarkonium production through the top quark rare decays via the channels involving flavor changing neutral currents

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dc.contributor.authorNiu, Juan-Juan
dc.contributor.authorGuo, Lei
dc.contributor.authorMa, Hong-Hao [UNESP]
dc.contributor.authorWang, Shao-Ming
dc.contributor.institutionChongqing Univ
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-11-26T16:04:45Z
dc.date.available2018-11-26T16:04:45Z
dc.date.issued2018-08-17
dc.description.abstractIn the paper, we discuss the possibility of observation of heavy quarkoniums via the processes involving flavor changing neutral currents (FCNC). More explicitly, we systematically calculate the production of heavy charmonium and (c (b) over bar -quarkonium through the top quark semiexclusive rare FCNC decays in the framework of the nonrelativistic QCD (NRQCD) factorization theory. Our results show that the total decay widths Gamma(t -> eta c) = 1.20(-0.51-0.45)( +1.04+1.14) x 10(-16 )GeV, Gamma(t -> J/psi)=1.37(-0.51-.051)(+1.03+1.30)x 10(-16) GeV, Gamma(t -> Bc) = 2.06(-0.17-0.54)(+0.17+0.91) x 10(-18) GeV, and Gamma(t -> Bc*) = 6.27(-0.62-1.64)(+0.63+2.78)x 10(-18) GeV, where the uncertainties are from variation of quark masses and renormalization scales. Even though the decay widths are small, it is important to make a systematic study on the production of charmonium and (cb)-quarkonium through the top-quark decays via FCNC in the Standard Model, which will provide useful guidance for future new physics research from the heavy quarkonium involved processes.en
dc.description.affiliationChongqing Univ, Dept Phys, Chongqing 401331, Peoples R China
dc.description.affiliationUniv Estadual Paulista, Fac Engn Guaratingueta, BR-12516410 Guaratingueta, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Fac Engn Guaratingueta, BR-12516410 Guaratingueta, SP, Brazil
dc.description.sponsorshipNational Natural Science Foundation of China
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipIdNational Natural Science Foundation of China: 11375008
dc.description.sponsorshipIdNational Natural Science Foundation of China: 11647307
dc.format.extent9
dc.identifierhttp://dx.doi.org/10.1140/epjc/s10052-018-6126-0
dc.identifier.citationEuropean Physical Journal C. New York: Springer, v. 78, n. 8, 9 p., 2018.
dc.identifier.doi10.1140/epjc/s10052-018-6126-0
dc.identifier.fileWOS000441929200006.pdf
dc.identifier.issn1434-6044
dc.identifier.urihttp://hdl.handle.net/11449/160502
dc.identifier.wosWOS:000441929200006
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofEuropean Physical Journal C
dc.relation.ispartofsjr2,022
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.titleHeavy quarkonium production through the top quark rare decays via the channels involving flavor changing neutral currentsen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dcterms.rightsHolderSpringer
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