| Full text | |
| Author(s): |
Total Authors: 3
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| Affiliation: | [1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083859 Campinas, SP - Brazil
[2] Univ Fed Fluminense, EEIMVR, Niteroi, RJ - Brazil
Total Affiliations: 2
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| Document type: | Journal article |
| Source: | JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS; v. 46, n. 7 JUL 2019. |
| Web of Science Citations: | 0 |
| Abstract | |
We use atmospheric neutrino phenomenology to obtain the expected background to proton decay in large deep underground neutrino detector (DUNE)-like neutrino detectors. We introduced, for the first time in this kind of analysis, the experimentally confirmed neutrino oscillations of the atmospheric neutrino observations which reduce the corresponding background for the nucleon decay channel p -> mu(+) + pi(0) by a factor of 40%. Furthermore, we infer the impact of four systematics on such background: the overall efficiency, the muon reconstruction energy resolution, the resonant neutral pion cross-section, and the neutral pion angular resolution. Considering a 40 kton detector with efficiency of 45%, our analysis leads to an error band in the lower limit for the proton lifetime sensitivity, tau/B, from 7.9 x 10(33) years to 1.1 x 10(34) years at 90% confidence level (C.L.). These numbers can be compared with the current mode-dependent experimental limits tau > 10(31) - 10(33) years at 90% C.L. (AU) | |
| FAPESP's process: | 14/19164-6 - Challenges in the 21st century in neutrino physics and astrophysics |
| Grantee: | Orlando Luis Goulart Peres |
| Support Opportunities: | Special Projects |