%0 Journal Article
%T Distribution amplitudes of heavy-light mesons
%A Binosi, D.
%A Chang, L.
%A Ding, M. H.
%A Gao, F.
%A Papavassiliou, J.
%A Roberts, C. D.
%J Physics Letters B
%D 2019
%V 790
%I Elsevier Science Bv
%@ 0370-2693
%G English
%F Binosi_etal2019
%O WOS:000460118200030
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3934), last updated on Wed, 20 Mar 2019 11:47:09 +0000
%X 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. 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: lambda(B) = (zeta = 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 -> gamma (E-gamma)l nu(l) radiative decay is also calculated, retaining 1/m(B)(2), and 1/E-gamma(2) corrections to the differential decay width, with the result Gamma(B -> gamma l nu l) /Gamma(B) = 0.47 (15) on E-gamma > 1.5 GeV.
%K B-meson decays
%K Heavy-light mesons
%K Nonperturbative continuum methods in quantum field theory
%K Parton distribution amplitudes
%K Quantum chromodynamics
%R 10.1016/j.physletb.2019.01.033
%U https://arxiv.org/abs/1812.05112
%U https://doi.org/10.1016/j.physletb.2019.01.033
%P 257-262