Lepton transverse polarization in the B→Dlvl decay due to the electromagnetic final state interaction

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dc.contributor.authorBraguta, V. V.
dc.contributor.authorChalov, A. E.
dc.contributor.authorLikhoded, A. A. [UNESP]
dc.contributor.institutionInstitute for High Energy Physics
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2022-04-28T19:56:43Z
dc.date.available2022-04-28T19:56:43Z
dc.date.issued2002-01-01
dc.description.abstractThe effect of lepton transverse polarization in B0 → D - l+ νl, B+ → D̄0 l+ νl decays (l = τ,μ) is analyzed within the framework of the standard model in the leading order of heavy quark effective theory. It is shown that a nonzero transverse polarization appears due to the electromagnetic final state interaction. The diagrams with intermediate D,D* mesons contributing to the nonvanishing PT are considered. Regarding only the contribution of these mesons, the values of the τ-lepton transverse polarization averaged over the physical region in the B0 → D- τ+ νl, and B+ → D̄0 τ+ νl, decays are equal to 2.60×10-3 and - 1.59×10-3, respectively. In the case of muon decay modes the values of 〈P T〉 are equal to 2.97×10-4 and -6.79×10-4. © 2002 The American Physical Society.en
dc.description.affiliationInstitute for High Energy Physics, 142280, Protvino, Moscow Region
dc.description.affiliationInstituto de Física Teórica - UNESP, Rua Pamplona, 145, 01405-900 São Paulo, SP
dc.description.affiliationInstitute for High Energy Physics, Protvino, 142284
dc.description.affiliationUnespInstituto de Física Teórica - UNESP, Rua Pamplona, 145, 01405-900 São Paulo, SP
dc.identifierhttp://dx.doi.org/10.1103/PhysRevD.66.074019
dc.identifier.citationPhysical Review D, v. 66, n. 7, 2002.
dc.identifier.doi10.1103/PhysRevD.66.074019
dc.identifier.issn0556-2821
dc.identifier.scopus2-s2.0-14244272119
dc.identifier.urihttp://hdl.handle.net/11449/224489
dc.language.isoeng
dc.relation.ispartofPhysical Review D
dc.sourceScopus
dc.titleLepton transverse polarization in the B→Dlvl decay due to the electromagnetic final state interactionen
dc.typeArtigo

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