Regular Article - Theoretical Physics
Perturbative QCD analysis of neutral B-meson decays into and
C.W. Chu College, Jiangsu Normal University, 221116, Xuzhou, China
2 Department of Physics, Jiangsu Normal University, 221116, Xuzhou, China
Accepted: 7 February 2022
Published online: 25 February 2022
The decays of , with and denoting the light scalar mesons and in the two-quark picture, are studied in the perturbative QCD approach based on factorization. With the referenced value of the mixing angle for the mixing in the quark-flavor basis, it is of great interest to obtain that: (a) these neutral B-meson decays into , and have large branching ratios in the order of , which mean the possibly constructive interferences existed in the decays with different flavor states, and then are expected to be tested at the Large Hadron Collider beauty and/or Belle-II experiments in the (near) future; (b) the large direct CP violations could be easily found in the and decays, which indicate the considerable interferences between the tree and the penguin decay amplitudes involved in these four modes, and would be confronted with the future measurements; (c) these neutral B-meson decays could be examined through the secondary decay chain , namely, the four-body decays of with still large branching ratios. On the other side, it seems that other 4 four-body decays of , , and could also be detected at the relevant experiments, if the could be identified from the clearly. The (near) future experimental confirmations with good precision would help to further study the perturbative and/or nonperturbative QCD dynamics involved in these considered decay modes, as well as to explore the intrinsic characters of these scalar mesons and/or and to constrain both of the magnitude and the sign of .
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