Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-02-20
Eur.Phys.J.C71:1521,2011
Physics
High Energy Physics
High Energy Physics - Phenomenology
14 pages, 8 figures, Published version that appears in EPJC
Scientific paper
10.1140/epjc/s10052-010-1521-1
The sensitivity of the zero position of the forward backward asymmetry $\mathcal{A}_{FB}$ for the exclusive $B\rightarrow K_{1}(1270)\mu^{+}\mu^{-}$ decay is examined by using most general non-standard 4-fermion interactions. Our analysis shows that the zero position of the forward backward asymmetry is very sensitive to the sign and size of the Wilson coefficients corresponding to the new vector type interactions, which are the counter partners of the usual Standard Model operators but have opposite chirality. In addition to these, the other significant effect comes from the interference of Scalar-Pseudoscalar and Tensor type operators. These results will not only enhance our theoretical understanding about the axial vector mesons but will also serve as a good tool to look for physics beyond the SM.
Ahmed Ishtiaq
Aslam Jamil M.
Paracha Ali M.
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