(A) Neutrino fluxes and event ratios

$\mathit N_{{\mathrm {up}}}({{\mathit \mu}})/\mathit N_{{\mathrm {down}}}({{\mathit \mu}}$)

INSPIRE   JSON  (beta) PDGID:
S067UDM
VALUE DOCUMENT ID TECN  COMMENT
• • We do not use the following data for averages, fits, limits, etc. • •
$0.71$ $\pm0.06$ 1
ADAMSON
2012B
 MINS contained-vertex muons
$0.551$ ${}^{+0.035}_{-0.033}$ $\pm0.004$ 2
ASHIE
2005
SKAM multi-GeV
1  ADAMSON 2012B reports the atmospheric neutrino results obtained with MINOS far detector in 2,553 live days (an exposure of 37.9 kton$\cdot{}$yr). This result is obtained with a sample of high resolution contained-vertex muons. The quoted error is statistical only.
2  ASHIE 2005 results are based on an exposure of 92 kton yr during the complete Super-Kamiokande I running period. The analyzed data sample consists of fully-contained single-ring ${{\mathit \mu}}$-like events with visible energy $>$ 1.33 GeV and partially-contained events. All partially-contained events are classified as ${{\mathit \mu}}$-like. Upward-going events are those with $-1<$ cos(zenith angle) $<-0.2$ and downward-going events are those with 0.2$<$ cos(zenith angle) $<$1. The ${{\mathit \mu}}$-like up-down ratio for the multi-GeV data deviates from 1 (the expectation for no atmospheric ${{\mathit \nu}_{{{\mu}}}}$ oscillations) by more than 12 standard deviations.
References