Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-02-19
JHEP 0105:052,2001
Physics
High Energy Physics
High Energy Physics - Phenomenology
24 pages, 12 figures. Version 2: addendum about the CC SNO data (section 6). Version 3: addendum about the NC and day/night SN
Scientific paper
10.1088/1126-6708/2001/05/052
The solar neutrino data are analyzed in a frequentist framework, using the Crow-Gardner and Feldman-Cousins prescriptions for the construction of confidence regions. Including in the fit only the total rates measured by the various experiments, both methods give results similar to the commonly used Delta chi^2-cut approximation. When fitting the full data set, the Delta chi^2-cut still gives a good approximation of the Feldman-Cousins regions. However, a careful statistical analysis significantly reduces the goodness-of-fit of the SMA and LOW solutions. In the addenda we discuss the implications of the latest KamLAND, SNO and SK data.
Creminelli Paolo
Signorelli Giovanni
Strumia Alessandro
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