arXiv:0911.2175·v2·High Energy Physics — Phenomenology
Power suppressed effects in B-> X_s gamma at O(alpha_s)
Thorsten Ewerth🇮🇹 · Paolo Gambino🇮🇹 · Soumitra Nandi🇮🇹
Abstract
We compute the O(alpha_s) corrections to the Wilson coefficients of the dimension five operators emerging from the Operator Product Expansion of inclusive radiative B decays. We discuss the impact of the resulting O(alpha_s Lambda_QCD^2/m_b^2) corrections on the extraction of m_b and mu_pi^2 from the moments of the photon spectrum.
Comments: 14 pages,4 figures, v2: comments and one figure on endpoint behaviour added, version to appear on NPB