Speaker
Euan Richard
(Tokyo University)
Description
Measurements of the atmospheric neutrino flux have been performed
using Super-Kamiokande, a 22.5 kton fiducial-volume water-Cherenkov
detector located in the Mozumi mine in Japan. Beginning operation in
1996, the detector has the world's highest statistics for observation
of neutrinos originating from cosmic ray interactions in the
atmosphere, which may be compared to the predictions given by
atmospheric neutrino flux models. We present measurements of the
$\nu_e + \bar{\nu}_e$ and $\nu_\mu + \bar{\nu}_\mu$ fluxes as a
function of energy, direction, and time, with a detailed analysis of
systematic errors. In particular, we compare the energy spectra in the
sub-GeV to TeV range to those of the various published flux models,
confirm the discovery of azimuthal asymmetries caused by the
geomagnetic field for both neutrino flavours, and present an analysis showing the first
indications of a correlation between the atmospheric neutrino flux and the
solar magnetic activity cycle.
| Registration number following "ICRC2015-I/" | 69 |
|---|---|
| Collaboration | -- not specified -- |
Author
Euan Richard
(Tokyo University)
