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Title: Distribution amplitudes of heavy-light mesons

Abstract

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→γlνlB = 0.47(15) on Eγ > 1.5 GeV.

Authors:
ORCiD logo; ; ; ; ; ORCiD logo
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Org.:
Ministry of Education of the People's Republic of China; USDOE Office of Science (SC), Nuclear Physics (NP)
OSTI Identifier:
1547850
Alternate Identifier(s):
OSTI ID: 1495045
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article: Published Article
Journal Name:
Physics Letters B
Additional Journal Information:
Journal Name: Physics Letters B Journal Volume: 790 Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; B-meson decays; heavy-light mesons; nonperturbative continuum methods in quantum field theory; parton distribution amplitudes; quantum chromodynamics

Citation Formats

Binosi, Daniele, Chang, Lei, Ding, Minghui, Gao, Fei, Papavassiliou, Joannis, and Roberts, Craig D. Distribution amplitudes of heavy-light mesons. Netherlands: N. p., 2019. Web. doi:10.1016/j.physletb.2019.01.033.
Binosi, Daniele, Chang, Lei, Ding, Minghui, Gao, Fei, Papavassiliou, Joannis, & Roberts, Craig D. Distribution amplitudes of heavy-light mesons. Netherlands. https://doi.org/10.1016/j.physletb.2019.01.033
Binosi, Daniele, Chang, Lei, Ding, Minghui, Gao, Fei, Papavassiliou, Joannis, and Roberts, Craig D. 2019. "Distribution amplitudes of heavy-light mesons". Netherlands. https://doi.org/10.1016/j.physletb.2019.01.033.
@article{osti_1547850,
title = {Distribution amplitudes of heavy-light mesons},
author = {Binosi, Daniele and Chang, Lei and Ding, Minghui and Gao, Fei and Papavassiliou, Joannis and Roberts, Craig D.},
abstractNote = {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.},
doi = {10.1016/j.physletb.2019.01.033},
url = {https://www.osti.gov/biblio/1547850}, journal = {Physics Letters B},
issn = {0370-2693},
number = C,
volume = 790,
place = {Netherlands},
year = {Fri Mar 01 00:00:00 EST 2019},
month = {Fri Mar 01 00:00:00 EST 2019}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at https://doi.org/10.1016/j.physletb.2019.01.033

Citation Metrics:
Cited by: 33 works
Citation information provided by
Web of Science

Figures / Tables:

Table 1 Table 1: Masses and decay constants of heavy pseudoscalar mesons (ηc , ηb ) computed herein, using Eqs. (3)–(6); compared with available experimental [68] and latticeQCD determinations [69,70]. (Quantities listed in GeV.)

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Works referencing / citing this record:

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Symmetry, symmetry breaking, and pion parton distributions
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