Probing Non-Standard Neutrino Interactions with Supernova Neutrinos at Hyper-K

Abstract

Non-standard neutrino self interactions (NSSI) could be stronger than Fermi interactions. We investigate the ability to constrain these four-neutrino interactions by their effect on the flux of neutrinos originating from a galactic supernova. In the dense medium of a core collapse supernova, these new self interactions can have a significant impact on neutrino oscillations, leading to changes at the flavor evolution and spectra level. We use simulations of the neutrino flux from a 13 solar mass, core collapse supernova at 10 kpc away, and numerically propagate these neutrinos through the stellar medium taking into account vacuum/MSW oscillations, SM $\nu -\nu$ scattering as well as $\nu -\nu$ interactions that arise from NSSI. We pass the resulting neutrino flux to a simulation of the future Hyper-Kamiokande detector to see what constraints on NSSI parameters are possible when the next galactic supernova becomes visible. We find that these constraints depend strongly on the neutrino mass hierarchy and if the NSSI is flavor-violating or preserving. Sensitivity to NSSI in the normal hierarchy (NH) at Hyper-K is limited by the experiment's ability to efficiently detect ${\nu }_e$, but deviations from no NSSI could be seen if the NSSI is particularly strong. In the inverted hierarchy (IH) scenario, Hyper-K can significantly improve constraints on flavor-violating NSSI down to $\mathcal{O}(10^{-1})G_F$.

arXiv comment18 pages, 9 figures - Added figures and prepared for submission to JHEP

References in corpus (17)

• Identifying the neutrino mass spectrum from a supernova neutrino burst
• Simulation of Coherent Non-Linear Neutrino Flavor Transformation in the Supernova Environment I: Correlated Neutrino Trajectories
• Hyper-Kamiokande Design Report
• Non standard neutrino interactions
• Supernova Neutrino Light Curves and Spectra for Various Progenitor Stars: From Core Collapse to Proto-neutron Star Cooling
• Axial symmetry breaking in self-induced flavor conversion of supernova neutrino fluxes
• Probing supernova shock waves and neutrino flavor transitions in next-generation water-Cherenkov detectors
• Analysis of matter suppression in collective neutrino oscillations during the supernova accretion phase
• Nonstandard neutrino interactions at DUNE, T2HK and T2HKK
• Non-standard neutrino interactions and low energy experiments
• Nonstandard neutrino-neutrino refractive effects in dense neutrino gases
• On the Occurrence of Crossings Between the Angular Distributions of Electron Neutrinos and Antineutrinos in the Supernova Core
• New effects of non-standard self-interactions of neutrinos in a supernova
• Simulating nonlinear neutrino flavor evolution
• Non-standard neutrino self-interactions in a supernova and fast flavor conversions
• Stability of three neutrino flavor conversion in supernovae
• Bounding Effective Operators at the One-Loop Level: The Case of Four-Fermion Neutrino Interactions

Cited by in corpus (3)

• Neutrino non-standard interactions meet precision measurements of $N_{\mathrm{eff}}$
• Supernova Preshock Neutronization Burst as a Probe of Non-Standard Neutrino Interactions
• Oscillation-Independent Probes of Neutrino Non-Standard Interactions from Supernovae