Systematic analysis of the transition form factors of Bc to D-wave charmonia and corresponding semileptonic decays
Year: 2025
Type: article
Abstract: In this article, the vector, axial vector and tensor form factors of B c to D -wave charmonia ψ J ( J = 1 , 2 , 3 ) and η c 2 are analyzed within the framework of three-point QCD sum rules. With the predicted vector and axial vector form factors, we study the decay widths and branching ratios of semileptonic decays B c → ψ J l ν l ¯ and B c → η c 2 l ν l ¯ . Our results indicate that the semileptonic decay branching ratios of B c to D -wave charmonia decreases as the total angular momentum of the final state D -wave charmonia increases. For decay processes B c → ψ 1 l ν ¯ l , B c → ψ 2 [ η c 2 ] l ν ¯ l and B c → ψ 3 l ν ¯ l , the branching ratios can reach the order of magnitude 10 − 3 , 10 − 4 and 10 − 5 , respectively, which can provide a valuable reference for future experimental measurements for B c meson by LHCb collaboration. Furthermore, these results also can provide useful information to study the properties of B c meson and D -wave charmonia.
Source: Physics Letters B
Authors: Jie Lu, Dian-Yong Chen, Guo-Liang Yu, Zhi-Gang Wang
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4416612515