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Neutrino Process in Core-collapse Supernovae with Neutrino Self-interaction and MSW Effects
- Authors
- Ha, Eun Ja; Ko, Heamin; Cheoun, Myung-Ki; Kusakabe, Motohiko; Hayakawa, Takehito; Sasaki, Hirokazu; Kajino, Toshitaka; Hashimoto, Masa-aki; Usang, Mark D.; Ono, Masaomi; Chiba, Satoshi; Nakamura, Ko; Tolstov, Alexey; Nomoto, Ken'ichi; Kawano, Toshihiko; Mathews, Grant J.
- Issue Date
- Mar-2020
- Publisher
- IOP Publishing Ltd
- Keywords
- Supernova neutrinos; Explosive nucleosynthesis; Neutrino oscillations
- Citation
- ASTROPHYSICAL JOURNAL LETTERS, v.891, no.1, pp.1 - 6
- Indexed
- SCIE
SCOPUS
- Journal Title
- ASTROPHYSICAL JOURNAL LETTERS
- Volume
- 891
- Number
- 1
- Start Page
- 1
- End Page
- 6
- ISSN
- 2041-8205
- Abstract
- We calculate the abundances of Li-7, B-11, Nb-92, Tc-98, La-138, and Ta-180 produced by neutrino (nu)-induced reactions in a core-collapse supernova explosion. We consider the modification by nu self-interaction (nu-SI) near the neutrinosphere and the Mikheyev-Smirnov-Wolfenstein (MSW) effect in the outer layers based on time-dependent neutrino energy spectra. Abundances of Li-7 and the heavy isotopes Nb-92, Tc-98, and La-138 are reduced by a factor of 1.5-2.0 by the nu-SI. In contrast, B-11 is relatively insensitive to the nu-SI. We find that the abundance ratio of heavy to light nuclei, La-138/B-11, is sensitive to the neutrino mass hierarchy, and the normal mass hierarchy is more likely to be consistent with the solar meteoritic abundances.
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Related Researcher
- Ha, Eun Ja
- COLLEGE OF NATURAL SCIENCES (DEPARTMENT OF PHYSICS)