Impact of standard neutrino oscillations and systematics on proton lifetime measurements

Autor(es)

Gratieri, D. R. ^{[1, 2]} ; Guzzo, M. M. ^[1] ; Peres, O. L. G. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083859 Campinas, SP - Brazil

^[2] Univ Fed Fluminense, EEIMVR, Niteroi, RJ - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS; v. 46, n. 7 JUL 2019.
• Citações Web of Science: 0

Resumo

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)

• Processo FAPESP: 14/19164-6 - Desafios para o século XXI em física e astrofísica de neutrinos
• Beneficiário: Orlando Luis Goulart Peres
• Modalidade de apoio: Auxílio à Pesquisa - Projetos Especiais