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Title: Distribution amplitudes of heavy-light mesons

Journal Article · · Physics Letters B
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A symmetry-preserving approach to the continuum bound-state problem in quantum field theory is used to calculate the masses, leptonic decay constants and light-front distribution amplitudes of empirically accessible heavy-light mesons. Here, the inverse moment of the B-meson distribution is particularly important in treatments of exclusive B-decays using effective field theory and the factorisation formalism; and its value is therefore computed: λB(ζ = 2GeV) = 0.54(3) GeV. As an example and in anticipation of precision measurements at new-generation B-factories, the branching fraction for the rare B → γ(Eγ)lνl radiative decay is also calculated, retaining 1/m2B and 1/E2γ corrections to the differential decay width, with the result ΓB→γlνl/ΓB = 0.47(15) on Eγ > 1.5 GeV.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
Ministry of Education of the People's Republic of China; USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1547850
Alternate ID(s):
OSTI ID: 1495045
Journal Information:
Physics Letters B, Journal Name: Physics Letters B Vol. 790 Journal Issue: C; ISSN 0370-2693
Publisher:
ElsevierCopyright Statement
Country of Publication:
Netherlands
Language:
English
Citation Metrics:
Cited by: 33 works
Citation information provided by
Web of Science

Cited By (6)

Drawing insights from pion parton distributions journal March 2020
Symmetry, symmetry breaking, and pion parton distributions journal March 2020
Spectrum of Light- and Heavy-Baryons journal April 2019
A pattern for the flavor dependent quark-antiquark interaction journal October 2019
Elastic electromagnetic form factors of vector mesons journal December 2019
Strong Running Coupling from the Gauge Sector of Domain Wall Lattice QCD with Physical Quark Masses journal April 2019

Figures / Tables (11)

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Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
B-meson decays
heavy-light mesons
nonperturbative continuum methods in quantum field theory
parton distribution amplitudes
quantum chromodynamics