TY - JOUR AU - Binosi, D. AU - Chang, L. AU - Ding, M. H. AU - Gao, F. AU - Papavassiliou, J. AU - Roberts, C. D. PY - 2019 DA - 2019// TI - Distribution amplitudes of heavy-light mesons T2 - Phys. Lett. B JO - Physics Letters B SP - 257 EP - 262 VL - 790 PB - Elsevier Science Bv KW - B-meson decays KW - Heavy-light mesons KW - Nonperturbative continuum methods in quantum field theory KW - Parton distribution amplitudes KW - Quantum chromodynamics AB - 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. SN - 0370-2693 UR - https://arxiv.org/abs/1812.05112 UR - https://doi.org/10.1016/j.physletb.2019.01.033 DO - 10.1016/j.physletb.2019.01.033 LA - English N1 - WOS:000460118200030 ID - Binosi_etal2019 ER -