Effects of quantum decoherence in a future supernova neutrino detection

Autor(es)

dos Santos, Marcos V. ; de Holanda, Pedro C. ; Neto, Pedro Dedin ; Kemp, Ernesto

• Tipo de documento: Artigo Científico
• Fonte: PHYSICAL REVIEW D; v. 108, n. 10, p. 22-pg., 2023-11-17.

Resumo

Quantum decoherence effects in neutrinos, described by the open quantum systems formalism, serve as a gateway to explore potential new physics, including quantum gravity. Previous research extensively investigated these effects across various neutrino sources, imposing stringent constraints on the spontaneous loss of coherence. In this study, we demonstrate that even within the supernovae environment, where neutrinos are released as incoherent states, quantum decoherence could influence the flavor equipartition of 3v mixing. Additionally, we examine the potential energy dependence of quantum decoherence parameters (F = F0(E=E0)n) with different power laws (n = 0; 2; 5=2). Our findings indicate that future-generation detectors (DUNE, Hyper-K, and JUNO) can significantly constrain quantum decoherence effects under different scenarios. For a supernova located 10 kpc away from Earth, if no quantum decoherence is observed, DUNE could potentially establish 3u bounds of F <= 6.2 x 10-14 eV in the normal mass hierarchy (NH) scenario, while Hyper-K would impose a 2u limit of F <= 3.6 x 10-14 eV for the inverted mass hierarchy (IH) with n = 0-assuming no energy exchange between the neutrino subsystem and nonstandard environment. These limits become even more restrictive for a closer supernova. When we relax the assumption of energy exchange, for a 10 kpc distance, DUNE could establish a 3u limit of F8 <= 4.2 x 10-28 eV for NH, while Hyper-K could constrain F8 <= 1.3 x 10-27 eV for IH (n = 0) with 2u, which would be orders of magnitude stronger than the bounds reported to date. Furthermore, we examine the impact of neutrino loss during propagation for future supernova detection. (AU)

• Processo FAPESP: 22/01568-0 - Efeitos da hierarquia de massa em neutrinos de supernova
• Beneficiário: Pedro Dedin Neto
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• 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
• Processo FAPESP: 19/08956-2 - Fenomenologia de oscilações de neutrinos
• Beneficiário: Pedro Dedin Neto
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto