Weak decays of Bc meson in a QCD potential model

2025/11/14 by Pathak, K K, Bhattacharya, S, Das, T
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.2511.11280

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 α_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 α_s. Within the potential model, we find the scale for leptonic decay is λ≤ 0.150 GeV and for semileptonic decay is \lamda ≥ 0.410 GeV.

Citations

• Decay properties of beauty and charm mesons within Isgur-Wise function formalism
• Semileptonic decay of Bc meson into S wave charmonium in a QCD potential model with coulombic part as perturbation

Cited by

• Quantum Tunnelling Across Hydrogen Bonds: Proton--Deuteron Isotope Effects from a Cornell-Type Potential Model

Related

• Semileptonic and nonleptonic decays of Bc
• Weak decays of the B_c meson
• Semileptonic decay of B_c meson into c c states in a QCD potential model
• Semileptonic decay of Bc meson into S wave charmonium in a QCD potential model with coulombic part as perturbation
• Relativistic description of weak decays of B_s mesons