Neutrino scattering and B anomalies from hidden sector portals

TL;DR

This paper investigates how hidden sector particles could generate new quark-neutrino interactions, affecting neutrino scattering experiments and potentially explaining B decay anomalies, with implications for future detection.

Contribution

It introduces a model linking hidden sector dynamics to quark-neutrino couplings and explores their impact on neutrino scattering constraints and B anomalies.

Findings

Constraints from neutrino scattering data limit hidden sector interactions.

Recoil spectra can reveal signatures of new quark-neutrino couplings.

The framework can potentially explain B decay anomalies.

Abstract

We examine current constraints on and the future sensitivity to the strength of couplings between quarks and neutrinos in the presence of a form factor generated from loop effects of hidden sector particles that interact with quarks via new interactions. We consider models associated with either vector or scalar interactions of quarks and leptons generated by hidden sector dynamics. We study constraints on these models using data from coherent elastic neutrino-nucleus scattering and solar neutrino experiments and demonstrate how these new interactions may be discovered by utilizing the recoil spectra. We show that our framework can be naturally extended to explain the lepton universality violating neutral current B decay anomalies, and that in a model framework the constraints from neutrino scattering can have implications for these anomalies.