The anisotropy of inverse beta decay and antineutrino detection

Details The anisotropy of inverse beta decay and antineutrino detection The anisotropy of inverse beta decay and antineutrino detection

1998-01-13

arxiv.org/abs/astro-ph/9801111v1

Nucl.Phys.Proc.Suppl. 70 (1999) 364-366

Astronomy and Astrophysics

Astrophysics

3 pages including 2 figures, LaTex file, espcrc2.sty is needed; to appear in Nucl. Phys. B Proc. Suppl., Proceedings of TAUP97

Scientific paper

10.1016/S0920-5632(98)00453-8

The anisotropy of the positrons emitted in the reaction $\bar{\nu}_{e}+p\to n+e^{+}$ has to be taken into account for extracting an antineutrino signal in Superkamiokande. For the Sun, this effect allows a sensitivity to $\nu_{e}\to\bar{\nu}_{e}$ transition probability at the 3% level already with the statistics collected in the first hundred days. For a supernova in the Galaxy, the effect is crucial for extracting the correct ratio of $\nu-e$ to $\bar\nu_{e}-p$ events.

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