Semileptonic decay and form factors of $Ω_b^- \rightarrow Ω_c^0\,e\,\bar{ν_e}$
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| Format: | Preprint |
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2025
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| _version_ | 1866914436449566720 |
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| author | Patel, Kinjal Thakkar, Kaushal |
| author_facet | Patel, Kinjal Thakkar, Kaushal |
| contents | We investigated the heavy-to-heavy semileptonic decay $Ω_b^- \rightarrow Ω_c^0 e \bar{ν_e}$ within the framework of the Hypercentral Constituent Quark Model (HCQM). The ground-state masses of the involved baryons were evaluated by numerically solving the six-dimensional hyperradial Schrödinger equation, incorporating both hyper-Coulomb and linear confinement potentials along with spin-dependent interactions. The Heavy Quark Effective Field Theory (HQET) form factors are computed up to the subleading order, incorporating $1/m_Q$ corrections that account for finite mass effects beyond the heavy-quark symmetry limit. These form factors were then employed to analyse the heavy-to-heavy semileptonic decay rate via helicity formalism. The decay width and branching ratio results were compared to those obtained using various theoretical approaches. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2510_16529 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Semileptonic decay and form factors of $Ω_b^- \rightarrow Ω_c^0\,e\,\bar{ν_e}$ Patel, Kinjal Thakkar, Kaushal High Energy Physics - Phenomenology We investigated the heavy-to-heavy semileptonic decay $Ω_b^- \rightarrow Ω_c^0 e \bar{ν_e}$ within the framework of the Hypercentral Constituent Quark Model (HCQM). The ground-state masses of the involved baryons were evaluated by numerically solving the six-dimensional hyperradial Schrödinger equation, incorporating both hyper-Coulomb and linear confinement potentials along with spin-dependent interactions. The Heavy Quark Effective Field Theory (HQET) form factors are computed up to the subleading order, incorporating $1/m_Q$ corrections that account for finite mass effects beyond the heavy-quark symmetry limit. These form factors were then employed to analyse the heavy-to-heavy semileptonic decay rate via helicity formalism. The decay width and branching ratio results were compared to those obtained using various theoretical approaches. |
| title | Semileptonic decay and form factors of $Ω_b^- \rightarrow Ω_c^0\,e\,\bar{ν_e}$ |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2510.16529 |