(O_8, O_8) contribution to $\bar{B}\to X_s\gamma \gamma$ at O(α_s)

H. M. Asatrian, C. Greub, A. Kokulu

In this analysis, we present the contribution associated with the chromomagnetic dipole operator O_8 to the double differential decay width dΓ/(ds_1 ds_2) for the inclusive process…