Solar Neutrinos and the Strongest Oscillation Constraints on Scalar NSI

Abstract

Scalar non-standard neutrino interactions (sNSI) is a scenario where neutrinos can develop a medium dependent contribution to their mass due to a new scalar mediator. This scenario differs from the commonly discussed vector mediator case in that the oscillation effect scales with density rather than density and neutrino energy. Thus the strongest oscillation constraint comes from solar neutrinos which experience the largest density in a neutrino oscillation experiment. We derive constraints on all the sNSI parameters as well as the absolute neutrino mass scale by combining solar and reactor data and find solar neutrinos to be $>1$ order of magnitude more sensitive to sNSI than terrestrial probes such as long-baseline experiments.

21 pages, 12 figures, 3 tables, comments welcome! v2: clarifying remarks added, matches published version

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Cited by in corpus (9)

• Bounds on new neutrino interactions from the first CE$\nu$NS data at direct detection experiments
• Neutrino oscillation measurements with KamLAND and JUNO in the presence of scalar NSI
• Resonant neutrino self-interactions: Insights from the full shape galaxy power spectrum
• Scalar NSI: A unique tool for constraining absolute neutrino masses via $\nu$-oscillations
• Testing New Physics in Oscillations at a Neutrino Factory
• Towards First Detection of the Solar MSW Transition With JUNO
• The Sensitivity of DUNE in Presence of Off-Diagonal Scalar NSI Parameters
• Probing Long-Range Forces in Neutrino Oscillations at the ESSnuSB Experiment
• Probing neutrino-night-quark effective scalar interactions from neutrino masses