Soft-photon corrections in multi-body meson decays
High Energy Physics - Phenomenology
2008-11-26 v2
Abstract
The effects due to soft-photon emission (and the related virtual corrections) in multi-body decays of B, D, and K mesons are analysed. We present analytic expressions for the universal O(alpha) correction factors which can be applied to all multi-body decay modes where a tight soft-photon energy cut in the decaying-particle rest-frame is applied. All-order resummations valid in the limit of small and large velocities of the final-state particles are also discussed. The phenomenological implications of these correction factors in the distortion of Dalitz-plot distributions of K -> 3 pi decays are briefly analysed.
Cite
@article{arxiv.0709.2439,
title = {Soft-photon corrections in multi-body meson decays},
author = {Gino Isidori},
journal= {arXiv preprint arXiv:0709.2439},
year = {2008}
}
Comments
8 pages, 2 figures (v2: minor modifications - published version)