4.7 Article

Three-flavor collective neutrino conversions with multi-azimuthal-angle instability in an electron-capture supernova model

期刊

PHYSICAL REVIEW D
卷 103, 期 6, 页码 -

出版社

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.103.063008

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资金

  1. Japan Society for Promotion of Science (JSPS) from the Ministry of Education, Culture, Sports, Science, and Technology (MEXT) [20J13631]
  2. U.S. Department of Energy Office of Science [DE-SC0020262]
  3. NSF [AST-1908960, PHY-1914409]
  4. Research Institute of Stellar Explosive Phenomena at Fukuoka University [207002]
  5. JSPS KAKENHI [JP17H01130, JP17H06364, JP17H06357, JP18H01212, JP20H05249]
  6. MEXTas Program for Promoting researches on the Supercomputer Fugaku (Toward a unified view of the universe: from large scale structures to planets)
  7. JICFuS
  8. Grants-in-Aid for Scientific Research [20J13631] Funding Source: KAKEN

向作者/读者索取更多资源

This study investigates the multi-azimuthal angle effect on collective neutrino oscillation in a realistic supernova model, finding that this effect induces collective flavor conversions when completely suppressed. The results are validated by extending linear stability analysis into a three-flavor scheme including mixing angles.
We investigate the multi-azimuthal angle (MAA) effect on collective neutrino oscillation by considering the three-dimensional neutrino momentum distribution in a realistic electron-capture supernova model with an 8.8 M-circle dot progenitor. We find that the MAA effect induces collective flavor conversions at epochs when it is completely suppressed under the axial-symmetric approximation. This novel activity is switched on/off by the growth of the MAA instability and imprints additional time evolution in the expected neutrino event rate. We validate our results by extending the linear stability analysis into the three-flavor scheme including mixing angles, and confirm that the onset of collective neutrino oscillation matches the steep growth of flavor instability. We discuss how the MAA effect alters neutrino detection at Super-Kamiokande and DUNE.

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