Search for Bs → μμγ at Large Hadron Collider

The branching ratio for B-s -> l(+)l(-)gamma mode is of the same order as B-s -> l(+)l(-), since there is no helicity suppression in the 3-body decay mode. New Physics beyond Standard Model may affect these rates favourably for experimental observation at LHC and simultaneous measurements of the modes B-s -> mu(+)mu- and B-s -> mu(+)mu(-)gamma at LHC experiment will indicate the basic nature of the interaction at play. A simulation study has been performed to evaluate the potential of CMS detector to observe the more difficult mode of B-s ->mu(+)mu(-)gamma. An upper limit of 2.08 x 10(-7) on the branching ratio is expected to be achieved corresponding to an integrated luminosity of 10 fb(-1).