Analysis of the decay
Physics Department, Semnan University, P.O.Box 35195-363, Semnan, Iran
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Accepted: 11 August 2016
Published online: 12 September 2016
In this paper we analyzed the decay within different frameworks. At first we consider the naive factorization (NF) and the QCD factorization (QCDF) approach, where the final states are a pseudoscalar meson and vector meson; then we consider the final state interaction (FSI) effect, where the intermediate state is to improve the branching ration. In QCDF we considered the nonfactorizable corrections, such as vertex correction and hard spectator interactions. First observation of the decay is reported using pp collision data, corresponding to an integrated luminosity of 1.0 fb-1, collected by the LHCb experiment at a center-of-mass energy of 7TeV. Our results in the naive factorization approach is and in QCDF approach is and the improved branching ratio is , when we consider the final state interaction effect in energy scale . It is near the experimental value, which is .
© Società Italiana di Fisica and Springer-Verlag Berlin Heidelberg, 2016