CP-Violating Neutrino Nonstandard Interactions in Long-Baseline-Accelerator Data
Neutrino oscillations in matter provide a unique probe of new physics. Leveraging the advent of neutrino appearance data from NOvA and T2K in recent years, we investigate the presence of CP-violating neutrino nonstandard interactions in the oscillation data. We first show how to very simply approxim...
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| Veröffentlicht in: | Physical review letters 2021-02, Vol.126 (5), p.051801-051801 |
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| container_title | Physical review letters |
| container_volume | 126 |
| creator | Denton, Peter B Gehrlein, Julia Pestes, Rebekah |
| description | Neutrino oscillations in matter provide a unique probe of new physics. Leveraging the advent of neutrino appearance data from NOvA and T2K in recent years, we investigate the presence of CP-violating neutrino nonstandard interactions in the oscillation data. We first show how to very simply approximate the expected NSI parameters to resolve differences between two long-baseline appearance experiments analytically. Then, by combining recent NOvA and T2K data, we find a tantalizing hint of CP-violating NSI preferring a new complex phase that is close to maximal: ϕ_{eμ} or ϕ_{eτ}≈3π/2 with |ε_{eμ}| or |ε_{eτ}|∼0.2. We then compare the results from long-baseline data to constraints from IceCube and COHERENT. |
| doi_str_mv | 10.1103/PhysRevLett.126.051801 |
| format | Article |
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Leveraging the advent of neutrino appearance data from NOvA and T2K in recent years, we investigate the presence of CP-violating neutrino nonstandard interactions in the oscillation data. We first show how to very simply approximate the expected NSI parameters to resolve differences between two long-baseline appearance experiments analytically. Then, by combining recent NOvA and T2K data, we find a tantalizing hint of CP-violating NSI preferring a new complex phase that is close to maximal: ϕ_{eμ} or ϕ_{eτ}≈3π/2 with |ε_{eμ}| or |ε_{eτ}|∼0.2. 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| ispartof | Physical review letters, 2021-02, Vol.126 (5), p.051801-051801 |
| issn | 0031-9007 1079-7114 |
| language | eng |
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| source | American Physical Society Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | CP violation Experiments Neutrinos Particle physics |
| title | CP-Violating Neutrino Nonstandard Interactions in Long-Baseline-Accelerator Data |
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