Study of vector and axial-vector form factors and the decay parameters for the semileptonic hyperon decays
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| Format: | Preprint |
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2024
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| _version_ | 1866929350602915840 |
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| author | Dahiya, Harleen Girdhar, Aarti Randhawa, Monika |
| author_facet | Dahiya, Harleen Girdhar, Aarti Randhawa, Monika |
| contents | Using the standard parametrization of the dipole form, we have studied the vulnerability of $Q^2$ on the vector form factors ($f_i^{B_iB_f}(Q^2)$) and axial-vector form factors ($g_i^{B_iB_f}(Q^2)$), $i=1,2,3$ computed for the semileptonic $B_i \rightarrow B_f l \barν$ decays for hyperons in the framework of chiral constituent quark model ($χ$CQM). Both, strangeness changing as well as strangeness conserving decays have been examined. We also present the dependence of the ratio of hyperon semileptonic decay constants $g_1(Q^2)/f_1(Q^2)$ for these decays. Further, we calculate the CKM matrix elements $V_{ud}$ from strangeness conserving and $V_{us}$ from strangeness changing hyperon decays. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2405_00444 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Study of vector and axial-vector form factors and the decay parameters for the semileptonic hyperon decays Dahiya, Harleen Girdhar, Aarti Randhawa, Monika High Energy Physics - Phenomenology Using the standard parametrization of the dipole form, we have studied the vulnerability of $Q^2$ on the vector form factors ($f_i^{B_iB_f}(Q^2)$) and axial-vector form factors ($g_i^{B_iB_f}(Q^2)$), $i=1,2,3$ computed for the semileptonic $B_i \rightarrow B_f l \barν$ decays for hyperons in the framework of chiral constituent quark model ($χ$CQM). Both, strangeness changing as well as strangeness conserving decays have been examined. We also present the dependence of the ratio of hyperon semileptonic decay constants $g_1(Q^2)/f_1(Q^2)$ for these decays. Further, we calculate the CKM matrix elements $V_{ud}$ from strangeness conserving and $V_{us}$ from strangeness changing hyperon decays. |
| title | Study of vector and axial-vector form factors and the decay parameters for the semileptonic hyperon decays |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2405.00444 |