Reinvestigating the B → PP decays by including the contributions from ϕB2

Considering the B mesonic distribution amplitude ϕB2, we reinvestigated the B → PP (where P = π and K) decays with the perturbative QCD (pQCD) approach based on the kT factorization for three scenarios. It is found that the contributions of ϕB2 to form factors FB→P0 (0) and branching ratios are comp...

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Bibliographic Details
Published in:Physical review. D 2021-03, Vol.103 (5)
Main Authors: Yang, Yueling, Lang, Lan, Zhao, Xule, Huang, Jinshu, Sun, Junfeng
Format: Article
Language:English
Subjects:
Decay
Form factors
Online Access:Get full text
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Summary:Considering the B mesonic distribution amplitude ϕB2, we reinvestigated the B → PP (where P = π and K) decays with the perturbative QCD (pQCD) approach based on the kT factorization for three scenarios. It is found that the contributions of ϕB2 to form factors FB→P0 (0) and branching ratios are comparable with those from the NLO corrections. The B → Kπ decays could be well explained by considering the ϕB2. Hence, when the nonleptonic B decays are studied with the pQCD approach, the ϕB2 should be taken into account seriously.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.103.056006