Neutrino-induced upward stopping muons in Super-Kamiokande
| dc.creator | Kamiokande Collaboration | |
| dc.date | 1999-08-11 | |
| dc.date | 1999-12-01 | |
| dc.date.accessioned | 2026-07-07T10:32:26Z | |
| dc.date.available | 2026-07-07T10:32:26Z | |
| dc.description | A total of 137 upward stopping muons of minimum energy 1.6 GeV are observed by Super-Kamiokande during 516 detector live days. The measured muon flux is 0.39+/-0.04(stat.)+/-0.02(syst.)x10^{-13}cm^{-2}s^{-1}sr^{-1} compared to an expected flux of 0.73+/-0.16(theo.)x10^{-13}cm^{-2}s^{-1}sr^{-1}. Using our previously-published measurement of the upward through-going muon flux, we calculate the stopping/through-going flux ratio R}, which has less theoretical uncertainty. The measured value of R=0.22+/-0.02(stat.)+/-0.01(syst.) is significantly smaller than the value 0.37^{+0.05}_{-0.04}(theo.) expected using the best theoretical information (the probability that the measured R is a statistical fluctuation below the expected value is 0.39%). A simultaneous fitting to zenith angle distributions of upward stopping and through-going muons gives a result which is consistent with the hypothesis of neutrino oscillations with the parameters sin^2 2θ>0.7 and 1.5x10^{-3} < Δm^2 < 1.5x10^{-2} eV^2 at 90% confidence level, providing a confirmation of the observation of neutrino oscillations by Super-Kamiokande using the contained atmospheric neutrino events. | |
| dc.description | 15 pages, including 7 figures. Submitted to Physics Letters Revision fixes typo in author field | |
| dc.identifier | https://arxiv.org/abs/hep-ex/9908049 | |
| dc.identifier | http://arxiv.org/abs/hep-ex/9908049 | |
| dc.identifier | Phys.Lett.B467:185-193,1999 | |
| dc.identifier | doi:10.1016/S0370-2693(99)01188-0 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/178752 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Neutrino-induced upward stopping muons in Super-Kamiokande | |
| dc.type | text |