Statistical tests for zenith angle dependences of up-going μ-like neutrino events for multi-GeV region

Details Statistical tests for zenith angle dependences of up-going μ-like neutrino events for multi-GeV region Statistical tests for zenith angle dependences of up-going μ-like neutrino events for multi-GeV region

Mar 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999nuphs..75..403k&link_type=abstract

Nuclear Physics B Proceedings Supplements, Volume 75, Issue 1-2, p. 403-405.

Physics

Nuclear Physics

Scientific paper

At the Neutrino 98 conference the Super Kamiokande collaboration presented a reduction of up-going μ-like events compared to down-going μ-like events by a factor of 0.54+0.06-0.05 for for an exposure of 33kton-years. Also, the zenith angle distribution observed by MACRO for -1<=cosΘ<=-0.1 does not fit well for the no oscillation expectation. On the basis of χ2 tested results (shape, absolute value), however, their claim for neutrino oscillations cannot be considered to be firmly established from the standpoint of statistical evidence.

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