Constraints on non-standard flavor-dependent interactions from Superkamiokande and Hyperkamiokande

TL;DR

This paper analyzes how atmospheric neutrino experiments Superkamiokande and Hyperkamiokande constrain flavor-dependent non-standard neutrino interactions during propagation, focusing on parameters less constrained by other experiments.

Contribution

It provides new constraints on flavor-dependent neutral current non-standard interactions using atmospheric neutrino data, neglecting parameters already tightly constrained elsewhere.

Findings

Superkamiokande and Hyperkamiokande set bounds on certain non-standard interaction parameters.

The analysis neglects parameters with strong existing constraints to focus on less constrained ones.

Results improve understanding of possible new physics in neutrino propagation.

Abstract

We investigate the constraint on the flavor-dependent neutral current Non-Standard Interactions in propagation from atmospheric neutrino experiments Superkamiokande and Hyperkamiokande. With the ansatz where the parameters which have strong constraints from other experiments are neglected, we show how these experiments put constraints on the remaining parameters of the Non-Standard Interactions.