Constraining non-standard neutrino interactions with neutral current events at long-baseline oscillation experiments
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866909615494529024 |
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| author | Gehrlein, Julia Machado, Pedro A. N. Pinheiro, João Paulo |
| author_facet | Gehrlein, Julia Machado, Pedro A. N. Pinheiro, João Paulo |
| contents | We explore, for the first time, {\textit{neutral-current}} events at long-baseline experiments to constrain vector and axial-vector neutrino non-standard interactions (NSI) with quarks. We leverage the flavor dependence of NSIs to perform an oscillation analysis in the neutral-current channel. We first introduce a framework to parametrize the effect of NSI on the cross section. Then, as an example, we analyze NOvA neutral-current data which provides significantly improved constraints on the axial-vector NSI parameters $\varepsilon_{μμ}^A,~\varepsilon_{ττ}^A$ and $\varepsilon_{eμ}^A$. This is highly complementary to constraints from SNO data, which, differently from long-baseline neutral current data, is not sensitive to isospin conserving NSIs $\varepsilon^A_u=\varepsilon^A_d$. Additionally, we disfavor large values of the diagonal vectorial NSI $\varepsilon_{μμ}^V$ and
\varepsilon_{ττ}^V$ which originate from the LMA-Dark solution. We also highlight the complementarity between NSI searches at oscillation experiments using charged current and neutral current channels. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_08712 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Constraining non-standard neutrino interactions with neutral current events at long-baseline oscillation experiments Gehrlein, Julia Machado, Pedro A. N. Pinheiro, João Paulo High Energy Physics - Phenomenology High Energy Physics - Experiment We explore, for the first time, {\textit{neutral-current}} events at long-baseline experiments to constrain vector and axial-vector neutrino non-standard interactions (NSI) with quarks. We leverage the flavor dependence of NSIs to perform an oscillation analysis in the neutral-current channel. We first introduce a framework to parametrize the effect of NSI on the cross section. Then, as an example, we analyze NOvA neutral-current data which provides significantly improved constraints on the axial-vector NSI parameters $\varepsilon_{μμ}^A,~\varepsilon_{ττ}^A$ and $\varepsilon_{eμ}^A$. This is highly complementary to constraints from SNO data, which, differently from long-baseline neutral current data, is not sensitive to isospin conserving NSIs $\varepsilon^A_u=\varepsilon^A_d$. Additionally, we disfavor large values of the diagonal vectorial NSI $\varepsilon_{μμ}^V$ and \varepsilon_{ττ}^V$ which originate from the LMA-Dark solution. We also highlight the complementarity between NSI searches at oscillation experiments using charged current and neutral current channels. |
| title | Constraining non-standard neutrino interactions with neutral current events at long-baseline oscillation experiments |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2412.08712 |