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Title: Reactions on {sup 40}Ar involving solar neutrinos and neutrinos from core-collapsing supernovae

Journal Article · · Physical Review. C, Nuclear Physics
;  [1];  [2]
  1. Department of Physics, Soongsil University, Seoul 156-743 (Korea, Republic of)
  2. National Astronomical Observatory, Mitaka, Tokyo 181-8589 (Japan)

We calculated neutrino reactions on {sup 40}Ar for detecting core-collapsing supernovae (SNe) neutrinos. The nucleus was originally exploited to identify the solar neutrino emitted from {sup 8}B produced in pp chains on the Sun. With the higher energy neutrinos emitted from the core-collapsing SNe, contributions from higher multipole transitions, as well as from the Gamow-Teller and Fermi transitions, are shown to be important ingredients for understanding reactions induced by the SN neutrino. Moreover, higher excited states beyond a few states known in experiment diminish significantly the expected large difference between the cross sections of {nu}{sub e} and {nu}-bar{sub e} reactions on {sup 40}Ar, which difference is anticipated because of the large Qvalue in the {nu}-bar{sub e} reaction. The reduction is shown to lead to a difference between them of only a factor of 2.

OSTI ID:
21499457
Journal Information:
Physical Review. C, Nuclear Physics, Vol. 83, Issue 2; Other Information: DOI: 10.1103/PhysRevC.83.028801; (c) 2011 American Institute of Physics; ISSN 0556-2813
Country of Publication:
United States
Language:
English

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