Inclusive quasielastic (anti-)neutrino nucleus scattering within the Standard Model and beyond
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| Format: | Preprint |
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2025
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| _version_ | 1866914050157314048 |
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| author | Hernández, E. Nieves, J. Sobczyk, J. E. |
| author_facet | Hernández, E. Nieves, J. Sobczyk, J. E. |
| contents | We derive fully general expressions for the inclusive (anti-)neutrino-induced nuclear quasielastic production of a strange or charmed baryon $Y$, considering all dimension-six new physics operators relevant to the semileptonic $q\to q'\ell ν_\ell$ transition with both left- and right-handed neutrino fields. We illustrate the formalism by applying it to the $Λ_c$ production in neutrino nucleus scattering. The nuclear response is computed using a state-of-the-art {\it ab initio} spectral function, based on realistic nuclear many-body wavefunctions obtained via coupled-cluster method and a nuclear Hamiltonian derived from chiral effective field theory. We also highlight the role played by the final state interactions between the produced $Y$ hyperon and the residual nuclear system, which can obscure potential new physics signals in this (anti-)neutrino nucleus reaction. Our results improve upon previous studies that neglected nuclear corrections and uncertainties -- effects we show to be comparable to, or even larger than, those expected from new physics. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2506_16774 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Inclusive quasielastic (anti-)neutrino nucleus scattering within the Standard Model and beyond Hernández, E. Nieves, J. Sobczyk, J. E. High Energy Physics - Phenomenology Nuclear Theory We derive fully general expressions for the inclusive (anti-)neutrino-induced nuclear quasielastic production of a strange or charmed baryon $Y$, considering all dimension-six new physics operators relevant to the semileptonic $q\to q'\ell ν_\ell$ transition with both left- and right-handed neutrino fields. We illustrate the formalism by applying it to the $Λ_c$ production in neutrino nucleus scattering. The nuclear response is computed using a state-of-the-art {\it ab initio} spectral function, based on realistic nuclear many-body wavefunctions obtained via coupled-cluster method and a nuclear Hamiltonian derived from chiral effective field theory. We also highlight the role played by the final state interactions between the produced $Y$ hyperon and the residual nuclear system, which can obscure potential new physics signals in this (anti-)neutrino nucleus reaction. Our results improve upon previous studies that neglected nuclear corrections and uncertainties -- effects we show to be comparable to, or even larger than, those expected from new physics. |
| title | Inclusive quasielastic (anti-)neutrino nucleus scattering within the Standard Model and beyond |
| topic | High Energy Physics - Phenomenology Nuclear Theory |
| url | https://arxiv.org/abs/2506.16774 |