25-31 August 2019
The Grand Hotel Daegu
Asia/Seoul timezone

Neutrino self-interaction and MSW effects on the supernova neutrino-process

26 Aug 2019, 19:00
2h 30m
Dynasty Hall (2F) (The Grand Hotel Daegu)

Dynasty Hall (2F)

The Grand Hotel Daegu

Board: 125
Poster Presentation Poster session

Speaker

Heamin Ko

Description

We study the nuclear abundances produced from neutrino process in supernova (SN) explosion. We consider the neutrino oscillation effects as neutrino scattering not only with matter, $i.e.$ electron background, but also neutrinos themselves in SN environment. The changed neutrino spectrum by $\nu$ oscillation are affected to $\nu$-nucleus reaction rate, so that the abundances during SN explosion change. The different shape of $\nu$ spectrum after oscillation depend on neutrino luminosity and averaged energy for each flavor by SN model. We investigate two different SN model for oscillation: one is the SN1987A model with equivalent neutrino luminosity for each flavor and consider only cooling phase of SN explosion with fixed neutrino temperature [1][2]. Second model is simulated SN explosion data in [3]. We average 6 models data and consider accretion and cooling phase. Our focusing elements for oscillation effect are $^{7}$Li,$^{11}$B [4], $^{92}$Nb [5], $^{98}$Tc [6] and $^{138}$La, which are mainly produced by neutrino reactions.

References
[1] T. Yoshida, M. Terasawa, T. Kajino and K. Sumiyoshi, Astrophys. J. 600, 204 (2004)
[2] T. Yoshida, T. Kajino, D. H. Hartmann, Phys. Rev. Lett. 94, 231101 (2005).
[3] E. O'Connor $et al.$, J. Phys. G 45, no. 10, 104001 (2018)
[4] Motohiko Kusakabe, Myung-Ki Cheoun, K. S. Kim, Masa-aki Hashimoto, Masaomi Ono, Ken'ichi Nomoto, Toshio Suzuki, Toshitaka Kajino, Grant J. Mathews, Astrophys. J. 872, 164 (2019)
[5] T. Hayakawa, K. Nakamura, T. Kajino, S. Chiba, N. Iwamoto, Myung-Ki Cheoun, and G. J. Mathews, ApJL 779, 1 (2013).
[6] T. Hayakawa, Heamin Ko, Myung-Ki Cheoun, M. Kusakabe, T. Kajino, M. D. Usang, S. Chiba, K. Nakamura, A. Tolstov, K. Nomoto, M. A. Hashimoto, M. Ono, T. Kawano, G. J. Mathews, Phy. Rev. Lett. 121, 102701, (2018).

Working Group WG1 : Neutrino Oscillation Physics

Primary author

Co-authors

Prof. Myung-Ki Cheoun (Soongsil University) Motohiko Kusakabe (Beihang University) Taka Kajino (Physics Division Oak Ridge National Laboratory) Mr Hirokazu Sasaki (The university of Tokyo) Takehito Hayakawa (Japan Atomic Energy Agency, Quantum Beam Science Directorate)

Presentation Materials

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