(A) Neutrino fluxes and event ratios

R(${{\mathit \mu}}/{{\mathit e}}$) = (Measured Ratio ${{\mathit \mu}}/{{\mathit e}}$) $/$ (Expected Ratio ${{\mathit \mu}}/{{\mathit e}}$)

INSPIRE   JSON  (beta) PDGID:
S067DU0
VALUE DOCUMENT ID TECN  COMMENT
• • We do not use the following data for averages, fits, limits, etc. • •
$0.658$ $\pm0.016$ $\pm0.035$ 1
ASHIE
2005
SKAM sub-GeV
$0.702$ ${}^{+0.032}_{-0.030}$ $\pm0.101$ 2
ASHIE
2005
SKAM multi-GeV
$0.69$ $\pm0.10$ $\pm0.06$ 3
SANCHEZ
2003
SOU2 Calorimeter raw data
4
FUKUDA
1996B
 KAMI Water Cherenkov
$1.00$ $\pm0.15$ $\pm0.08$ 5
DAUM
1995
FREJ Calorimeter
$0.60$ ${}^{+0.06}_{-0.05}$ $\pm0.05$ 6
FUKUDA
1994
KAMI sub-GeV
$0.57$ ${}^{+0.08}_{-0.07}$ $\pm0.07$ 7
FUKUDA
1994
KAMI multi-Gev
8
BECKER-SZENDY
1992B
 IMB Water Cherenkov
1  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 ${{\mathit e}}$-like events with 0.1 GeV/c $<{{\mathit p}_{{{e}}}}$ and ${{\mathit \mu}}$-like events 0.2 GeV/c $<{{\mathit p}_{{{\mu}}}}$, both having a visible energy $<$ 1.33 GeV. These criteria match the definition used by FUKUDA 1994.
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 events with visible energy $>$ 1.33 GeV and partially-contained events. All partially-contained events are classified as ${{\mathit \mu}}$-like.
3  SANCHEZ 2003 result is based on an exposure of 5.9 kton yr, and updates ALLISON 1999 result. The analyzed data sample consists of fully-contained ${{\mathit e}}$-flavor and ${{\mathit \mu}}$-flavor events having lepton momentum $>$ 0.3 GeV/c.
4  FUKUDA 1996B studied neutron background in the atmospheric neutrino sample observed in the Kamiokande detector. No evidence for the background contamination was found.
5  DAUM 1995 results are based on an exposure of $2.0$ kton$~$yr which includes the data used by BERGER 1990B. This ratio is for the contained and semicontained events. DAUM 1995 also report $\mathit R({{\mathit \mu}}/{{\mathit e}}$) = $0.99$ $\pm0.13$ $\pm0.08$ for the total neutrino induced data sample which includes upward going stopping muons and horizontal muons in addition to the contained and semicontained events.
6  FUKUDA 1994 result is based on an exposure of $7.7$ kton$~$yr and updates the HIRATA 1992 result. The analyzed data sample consists of fully-contained ${{\mathit e}}$-like events with $0.1<{{\mathit p}_{{{e}}}}<1.33$ GeV/$\mathit c$ and fully-contained ${{\mathit \mu}}$-like events with $0.2<{{\mathit p}_{{{\mu}}}}<1.5$ GeV/$\mathit c$.
7  FUKUDA 1994 analyzed the data sample consisting of fully contained events with visible energy $>1.33$ GeV and partially contained ${{\mathit \mu}}$-like events.
8  BECKER-SZENDY 1992B reports the fraction of nonshowering events (mostly muons from atmospheric neutrinos) as $0.36$ $\pm0.02$ $\pm0.02$, as compared with expected fraction $0.51$ $\pm0.01$ $\pm0.05$. After cutting the energy range to the Kamiokande limits, BEIER 1992 finds $\mathit R({{\mathit \mu}}/{{\mathit e}}$) very close to the Kamiokande value.
References