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Earth matter effects in detection of supernova neutrinos

X.-H. Guo1,* and Bing-Lin Young2,3,†

  • 1Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing 100875, China
  • 2Department of Physics and Astronomy, Iowa State University, Ames, Iowa 5011, USA
  • 3Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080, China

  • *Electronic address: xhguo@bnu.edu.
  • †Electronic address: young@iastate.edu
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Phys. Rev. D 73, 093003 – Published 11 May, 2006

DOI: https://doi.org/10.1103/PhysRevD.73.093003

Abstract

We calculated the matter effect, including both the Earth and supernova, on the detection of neutrinos from type II supernovae at the proposed Daya Bay reactor neutrino experiment. It is found that apart from the dependence on the flip probability PH inside the supernova and the mass hierarchy of neutrinos, the amount of the Earth matter effect depends on the direction of the incoming supernova neutrinos, and reaches the biggest value when the incident angle of neutrinos is around 93°. In the reaction channel ν¯e+p→e++n the Earth matter effect can be as big as about 12%. For other detection processes the amount of the Earth matter effect is a few per cent.

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Phys. Rev. D 73, 093003– Published 11 May, 2006
  • Received 27 February 2006

© 2006 American Physical Society

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