NNLL QCD Contribution of the Electromagnetic Dipole Operator to   Gamma(anti-B -> X(s) gamma)
  We present an independent calculation of that part of the O(\alpha_s^2) contribution to the decay width \Gamma(\bar B -> X_s \gamma) which arises from the self-interference term of the electromagnetic dipole operator O_7. Using a different method, we find complete agreement with a previous calculation. This NNLL contribution is an important ingredient for the complete NNLL prediction of \Gamma(\bar B -> X_s \gamma) which will resolve the charm quark mass ambiguity appearing at NLL accuracy. 
H. M. Asatrian, A. Hovhannisyan, V. Poghosyan (Yerevan Phys. Inst.),   T. Ewerth, C. Greub (Bern U.), T. Hurth (CERN & SLAC)