Weak decays of Bc meson in a QCD potential model
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arXiv
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| Hauptverfasser: | , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866914158499332096 |
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| author | Pathak, K K Bhattacharya, S Das, T |
| author_facet | Pathak, K K Bhattacharya, S Das, T |
| contents | 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\le 0.150 GeV and for semileptonic decay is \lamda \ge 0.410 GeV. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_11280 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Weak decays of Bc meson in a QCD potential model Pathak, K K Bhattacharya, S Das, T High Energy Physics - Phenomenology 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\le 0.150 GeV and for semileptonic decay is \lamda \ge 0.410 GeV. |
| title | Weak decays of Bc meson in a QCD potential model |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2511.11280 |