New Physics effects with right-handed neutrinos in semileptonic decay $B_c^+ \to B_s μ^+ ν_μ$
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| Format: | Preprint |
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2024
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| _version_ | 1866916680868823040 |
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| author | Boora, Priyanka Kumar, Dinesh Lalwani, Kavita |
| author_facet | Boora, Priyanka Kumar, Dinesh Lalwani, Kavita |
| contents | We extend the Standard Model with the general effective Hamiltonian for the quark level transition $c \to s \ell ν$ with a complete set of four fermion operators including right-handed neutrinos. The current experimental measurements in charm decays are compatible with the Standard Model predictions and are used to constrain the new physics. With the available experimental data, we fit a $χ^2$ function to get the best-fit values of the NP WCs. We investigate the impact of allowed new physics in the observables such as differential branching fraction, forward-backward asymmetry, lepton polarization asymmetry, and convexity parameter in the semileptonic decay $B_c^+ \to B_s μ^+ ν_μ$. The different types of new physics scenarios have significant effects on these considered observables. The future experimental information of these observables can help to disentangle the structure of new physics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_07987 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | New Physics effects with right-handed neutrinos in semileptonic decay $B_c^+ \to B_s μ^+ ν_μ$ Boora, Priyanka Kumar, Dinesh Lalwani, Kavita High Energy Physics - Phenomenology We extend the Standard Model with the general effective Hamiltonian for the quark level transition $c \to s \ell ν$ with a complete set of four fermion operators including right-handed neutrinos. The current experimental measurements in charm decays are compatible with the Standard Model predictions and are used to constrain the new physics. With the available experimental data, we fit a $χ^2$ function to get the best-fit values of the NP WCs. We investigate the impact of allowed new physics in the observables such as differential branching fraction, forward-backward asymmetry, lepton polarization asymmetry, and convexity parameter in the semileptonic decay $B_c^+ \to B_s μ^+ ν_μ$. The different types of new physics scenarios have significant effects on these considered observables. The future experimental information of these observables can help to disentangle the structure of new physics. |
| title | New Physics effects with right-handed neutrinos in semileptonic decay $B_c^+ \to B_s μ^+ ν_μ$ |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2411.07987 |