Perturbative QCD study of $B_s$ decays to a pseudoscalar meson and a tensor meson

Abstract

We study two-body hadronic $B_s\to PT$ decays, with $P(T)$ being a light pseudoscalar (tensor) meson, in the perturbative QCD approach. The CP-averaged branching ratios and the direct CP asymmetries of the $\Delta S=0$ modes are predicted, where $\Delta S$ is the difference between the strange numbers of final and initial states. We also define and calculate experimental observables for the $\Delta S=1$ modes under the $B_s^0-{\bar{B}}_s^0$ mixing, including CP averaged branching ratios, time-integrated CP asymmetries, and the CP observables $C_f$, $D_f$ and $S_f$. Results are compared to the $B_s\to PV$ ones in the literature, and to the $B\to PT$ ones, which indicate considerable U-spin symmetry breaking. Our work provides theoretical predictions for the $B_s\to PT$ decays for the first time, some of which will be potentially measurable at future experiments.

6 pages, 1 figure

References in corpus (3)

• Charmless non-leptonic B_s decays to PP, PV and VV final states in the pQCD approach
• Charmless Hadronic B Decays into a Tensor Meson
• Decays of bottom mesons emitting tensor meson in final state using ISGW II model

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