2019/01/24 by Shan Cheng
Physics and Astronomy · #Amplitude #Distribution (mathematics) #High-Energy Particle Collisions Research #Invariant mass #Isoscalar #Isovector #Meson #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Resonance (particle physics) #hep-ph
paper · pdf · doi:10.1103/physrevd.99.053005
published as Phys. Rev. D 99, 053005 (2019) · 19 pages, 9 figures, references and the corresponding descriptions are added
arxiv created 2019/01/24 · openalex created_date 2019/01/25 · openalex publication_date 2019/03/28 · arxiv updated 2019/04/03 · openalex updated_date 2026/08/05
We suggest to update the expansion coefficients of 2\ensuremathπDAs with the distribution amplitudes of light mesons evaluated from lattice QCD, with which we revisit B0\ensuremath→\ensuremathπ+\ensuremathπ0 transition form factors from the light-cone sum rules approach and extend the predictions from the threshold of dipion invariant mass to high energies including the resonance region. We also derive B^\ensuremath-\ensuremath→\ensuremathπ0\ensuremathπ0 transition form factors for the isoscalar dipion final state, supplementing to the isovector ones to complete the set of light-cone sum rules prediction of B\ensuremath→\ensuremathπ\ensuremathπ form factors. Our numerics shows that the lowest resonance gives the dominant contribution to P-wave form factors, while the resonance contribution in the S wave is not so salient.