Inference finds consistency between a neutrino flavor evolution model and Earth-based solar neutrino measurements
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arXiv
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| Format: | Preprint |
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2022
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| author | Laber-Smith, Caroline Ahmetaj, A. A. Armstrong, Eve Balantekin, A. Baha Patwardhan, Amol V. Sanchez, M. Margarette Wong, Sherry |
| author_facet | Laber-Smith, Caroline Ahmetaj, A. A. Armstrong, Eve Balantekin, A. Baha Patwardhan, Amol V. Sanchez, M. Margarette Wong, Sherry |
| contents | We continue examining statistical data assimilation (SDA), an inference methodology, to infer solutions to neutrino flavor evolution, for the first time using real - rather than simulated - data. The model represents neutrinos streaming from the Sun's center and undergoing a Mikheyev-Smirnov-Wolfenstein (MSW) resonance in flavor space, due to the radially-varying electron number density. The model neutrino energies are chosen to correspond to experimental bins in the Sudbury Neutrino Observatory (SNO) and Borexino experiments, which measure electron-flavor survival probability at Earth. The procedure successfully finds consistency between the observed fluxes and the model, if the MSW resonance - that is, flavor evolution due to solar electrons - is included in the dynamical equations representing the model. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2210_10884 |
| institution | arXiv |
| publishDate | 2022 |
| record_format | arxiv |
| spellingShingle | Inference finds consistency between a neutrino flavor evolution model and Earth-based solar neutrino measurements Laber-Smith, Caroline Ahmetaj, A. A. Armstrong, Eve Balantekin, A. Baha Patwardhan, Amol V. Sanchez, M. Margarette Wong, Sherry Solar and Stellar Astrophysics High Energy Physics - Experiment High Energy Physics - Phenomenology We continue examining statistical data assimilation (SDA), an inference methodology, to infer solutions to neutrino flavor evolution, for the first time using real - rather than simulated - data. The model represents neutrinos streaming from the Sun's center and undergoing a Mikheyev-Smirnov-Wolfenstein (MSW) resonance in flavor space, due to the radially-varying electron number density. The model neutrino energies are chosen to correspond to experimental bins in the Sudbury Neutrino Observatory (SNO) and Borexino experiments, which measure electron-flavor survival probability at Earth. The procedure successfully finds consistency between the observed fluxes and the model, if the MSW resonance - that is, flavor evolution due to solar electrons - is included in the dynamical equations representing the model. |
| title | Inference finds consistency between a neutrino flavor evolution model and Earth-based solar neutrino measurements |
| topic | Solar and Stellar Astrophysics High Energy Physics - Experiment High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2210.10884 |