Perturbative QCD analysis of neutral B-meson decays into [Formula omitted] and [Formula omitted]

• Published in: The European physical journal. C, Particles and fields Particles and fields, 2022-02, Vol.82 (2)
• Main Authors: Niu, Hua-Dian, Li, Guo-Dong, Ren, Jia-Le, Liu, Xin
• Format: Article
• Language: English
• Subjects: Analysis; Quarks
• ISSN: 1434-6044
• DOI: 10.1140/epjc/s10052-022-10111-8

The decays of [Formula omitted], with [Formula omitted] and [Formula omitted] denoting the light scalar mesons [Formula omitted] and [Formula omitted] in the two-quark picture, are studied in the perturbative QCD approach based on [Formula omitted] factorization. With the referenced value of the mixing angle [Formula omitted] for the [Formula omitted] mixing in the quark-flavor basis, it is of great interest to obtain that: (a) these neutral B-meson decays into [Formula omitted], and [Formula omitted] have large branching ratios in the order of [Formula omitted], 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 [Formula omitted] and [Formula omitted] 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 [Formula omitted], namely, the four-body decays of [Formula omitted] with still large branching ratios. On the other side, it seems that other 4 four-body decays of [Formula omitted], [Formula omitted], and [Formula omitted] could also be detected at the relevant experiments, if the [Formula omitted] could be identified from the [Formula omitted] 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 [Formula omitted] and/or [Formula omitted] and to constrain both of the magnitude and the sign of [Formula omitted].