Branching ratio and CP-asymmetry of B-s -> p(omega)K decays in the perturbative QCD approach

作者：Xiao Zhen Jun^*; Chen Xin Fen; Guo Dong Qin

来源：European Physical Journal C, 2007, 50(2): 363-371.

DOI：10.1140/epjc/s10052-007-0209-7

In this paper, we calculate the branching ratios and CP-violating asymmetries for Bs ->rho K-+/-(-/+), rho 0 (K) over bar (0) and omega(0)(K) over bar (0) decays in the perturbative QCD factorization approach. The theoretical predictions for the CP- averaged branching ratios of the considered decays are Br(B-s -> rho K-+/-(-/+)) approximate to 24.7 x 10(-6), Br(B-s -> rho(0) (K) over bar (0)) approximate to 1.2 x 10(-7) and Br(B-s -> omega(K) over bar (0)) approximate to 1.7 x 10(-7); and we also predict large CP-violating asymmetries for the considered decay modes. Specifically, the large A(CP)(dir)(B-s -> rho K-+/-(-/+)) at -12% level plus large branching ratio at 10(-5) level are measurable in the forthcoming LHC-b experiments.

• 出版日期2007-4
• 单位南京师范大学