Heavy- to light-meson transition form factors

Simple item page
dc.creatorIvanov, M. A.
dc.creatorKalinovsky, Yu. L.
dc.creatorMaris, P.
dc.creatorRoberts, C. D.
dc.date1997-11-12
dc.date.accessioned2026-07-07T11:11:25Z
dc.date.available2026-07-07T11:11:25Z
dc.descriptionSemileptonic heavy -> heavy and heavy -> light meson transitions are studied as a phenomenological application of a heavy-quark limit of Dyson-Schwinger equations. Employing two parameters: E, the difference between the mass of the heavy meson and the effective-mass of the heavy quark; and Lambda, the width of the heavy-meson Bethe-Salpeter amplitude, we calculate f_+(t) for all decays on their entire kinematically accessible t-domain. Our study favours f_B in the range 0.135-0.17 GeV and with E=0.44 GeV and 1/Lambda = 0.14 fm we obtain f_+^{B pi}(0) = 0.46. As a result of neglecting 1/m_c-corrections, we estimate that our calculated values of ρ^2 = 0.87 and f_+^{DK}(0)=0.62 are too low by approximately 15%. However, the bulk of these corrections should cancel in our calculated values of Br(D -> πl nu)/Br(D -> K l nu)=0.13 and f_+^{D pi}(0)/f_+^{DK}(0) = 1.16.
dc.description26 pages, 3 figures, REVTEX
dc.identifierhttps://arxiv.org/abs/nucl-th/9711023
dc.identifierhttp://arxiv.org/abs/nucl-th/9711023
dc.identifierPhys.Rev.C57:1991-2003,1998
dc.identifierdoi:10.1103/PhysRevC.57.1991
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/191092
dc.subjectNuclear Theory
dc.subjectHigh Energy Physics - Experiment
dc.subjectHigh Energy Physics - Phenomenology
dc.titleHeavy- to light-meson transition form factors
dc.typetext

Files

Collections

arXiv