# Weak decays of Bc meson in a QCD potential model

Source: [Weak decays of Bc meson in a QCD potential model](<https://www.sota2.com/research/paper/691aac096750be83fe5ce2df>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-11-18T05:01:21.182Z

Authors: K K Pathak, S Bhattacharya, T Das

Published: 2025-11-14T13:15:41.000Z

## Abstract

The leptonic and semileptonic decay propertis of Bc mesons are studied in a QCD potential model. The CKM element for the leptonic decay is calculated by evaluating its decay constant. With the help of the Isgur-Wise function, the form factors and the CKM element for semileptonic decay are also calculated. The variation in four-momentum square in the two decays demands two different scales of the strong coupling constant \\alpha\_s. Thus, a two-scale picture is evident from the study. We compute the decay constant f\_p for leptonic decay and form factors for semileptonic decay with two different \\alpbda scales in a specific prescription where it is related to the strong coupling \\alpha\_s. Within the potential model, we find the scale for leptonic decay is \\lambda \\le 0.150 GeV and for semileptonic decay is \\lamda \\ge 0.410 GeV.

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/2511.11280>)

[PDF](<https://arxiv.org/pdf/2511.11280.pdf>)