Charm quark mass dependence of the electromagnetic dipole operator contribution to anti-B -> X(s) gamma at O(alpha**2(s))

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/188170We extend existing calculations of the electromagnetic dipole operator contribution to the total decay rate and the photon energy spectrum of the decay \bar{B} -> X_sγat O(α_s^2) by working out the exact dependence on the charm quark mass.10 pages, uses axodraw.sty; minor corrections, references added, matches published versionHigh Energy Physics - PhenomenologyCharm quark mass dependence of the electromagnetic dipole operator contribution to anti-B -> X(s) gamma at O(alpha**2(s))text