Analysis of the lepton polarisation asymmetries of [`(B)] ® [`(K)]₂(1430) l+ l-{bar{B}} to {bar{K}}_{2}(1430) ell^{+} ell^{-} decay

摘要

In this work we will study the longitudinal polarisations of both leptons in the decay process [`(B)] ® [`(K)]₂(1430) l+ l-{bar{B}} to {bar{K}}_{2}(1430) ell^{+} ell^{-}. This process has all the features of the related and well investigated process [`(B)] ® [`(K)]*(890) l+ l-{bar{B}} to {bar{K}}^{*}(890) ell^{+} ell^{-}, with theoretically comparable branching ratios. The polarised differential decay rates as well as the single and double polarisation asymmetries are worked out, where the sensitivity of these to possible right-handed couplings for the related b→s radiative decay (and other BSM parameters) are also investigated.