skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

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: λ B(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(E γ)lν l radiative decay is also calculated, retaining 1/m 2 B and 1/E 2 γ corrections to the differential decay width, with the result Γ B→γlνlB = 0.47(15) on E γ > 1.5 GeV.

Authors:
ORCiD logo [1];  [2];  [3];  [4];  [4]; ORCiD logo [5]
  1. European Centre for Theoretical Studies in Nuclear Physics and Related Areas (ECT⁎) and Fondazione Bruno Kessler Villa Tambosi, Villazzano, TN (Italy)
  2. Nankai Univ., Tianjin (China)
  3. European Centre for Theoretical Studies in Nuclear Physics and Related Areas (ECT⁎) and Fondazione Bruno Kessler Villa Tambosi, Villazzano, TN (Italy); Nankai Univ., Tianjin (China); Argonne National Lab. (ANL), Lemont, IL (United States)
  4. Univ. of Valencia and CSIC, Valencia (Spain)
  5. Argonne National Lab. (ANL), Lemont, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (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) (SC-26)
OSTI Identifier:
1547850
Alternate Identifier(s):
OSTI ID: 1495045
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article: Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 790; Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
United States
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. United States: 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. United States. doi:10.1016/j.physletb.2019.01.033.
Binosi, Daniele, Chang, Lei, Ding, Minghui, Gao, Fei, Papavassiliou, Joannis, and Roberts, Craig D. Mon . "Distribution amplitudes of heavy-light mesons". United States. doi: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},
journal = {Physics Letters. Section B},
issn = {0370-2693},
number = C,
volume = 790,
place = {United States},
year = {2019},
month = {1}
}

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

Citation Metrics:
Cited by: 2 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.)

Save / Share: