Decoherence, matter effect, and neutrino hierarchy signature in long baseline experiments
| Autor: | Joao A B Coelho, W. Anthony Mann |
|---|---|
| Přispěvatelé: | AstroParticule et Cosmologie (APC (UMR_7164)), Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Particle physics
Quantum decoherence Physics::Instrumentation and Detectors KAMIOKANDE 01 natural sciences High Energy Physics - Experiment charged current 0103 physical sciences neutrino: mass 010306 general physics numerical calculations decoherence MSW effect Physics MINOS 010308 nuclear & particles physics new physics J-PARC Lab High Energy Physics::Phenomenology OPERA matter: effect neutrino: mixing angle resonance: enhancement High Energy Physics - Phenomenology [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph] High Energy Physics::Experiment neutrino: oscillation Neutrino Signature (topology) Mass hierarchy neutrino: mixing neutrino: mass: hierarchy |
| Zdroj: | Phys.Rev.D Phys.Rev.D, 2017, 96 (9), pp.093009. ⟨10.1103/PhysRevD.96.093009⟩ Physical Review D Physical Review D, American Physical Society, 2017, 96 (9), pp.093009. ⟨10.1103/PhysRevD.96.093009⟩ |
| ISSN: | 1550-7998 1550-2368 |
| DOI: | 10.1103/PhysRevD.96.093009⟩ |
| Popis: | Environmental decoherence of oscillating neutrinos of strength $\Gamma = (2.3 \pm 1.1) \times 10^{-23}$ GeV can explain how maximal $\theta_{23}$ mixing observed at 295 km by T2K appears to be non-maximal at longer baselines. As shown recently by R. Oliveira, the MSW matter effect for neutrinos is altered by decoherence: In normal (inverted) mass hierarchy, a resonant enhancement of $\nu_{\mu} (\bar{\nu}_{\mu}) \rightarrow \nu_{e} (\bar{\nu}_{e})$ occurs for $6 < E_{\nu} < 20$ GeV. Thus decoherence at the rated strength may be detectable as an excess of charged-current $\nu_{e}$ events in the full $\nu_{\mu}$ exposures of MINOS+ and OPERA. Comment: 8 pages, 2 figures Accepted for publication in PRD |
| Databáze: | OpenAIRE |
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