CP Asymmetry, Branching ratios and Isospin breaking effects in B-> rho   gamma and B-> omega gamma decays with the pQCD approach
  The radiative B-> rho gamma, B-> omega gamma decay modes are caused by the FCNC process, so they give us good insight towards probing the standard model in order to search for new physics. In this paper, we compute the branching ratio, direct CP asymmetry, and isospin breaking effects using the perturbative QCD approach within the standard model. 
Cai-Dian Lu, M. Matsumori, A.I. Sanda, and Mao-Zhi Yang