Constraining nonstandard neutrino-quark interactions with solar, reactor and accelerator data

TL;DR

This paper reanalyzes nonstandard neutrino-quark interactions using diverse experimental data, improving constraints on interaction parameters beyond the Standard Model through updated solar, reactor, and accelerator results.

Contribution

It provides the first comprehensive analysis combining solar, reactor, and accelerator data to constrain nonstandard neutrino-quark interactions with updated experimental inputs.

Findings

Stronger constraints on nonstandard interaction parameters.

Inclusion of new solar and KamLAND data enhances analysis accuracy.

Combination with CHARM data improves axial interaction bounds.

Abstract

We present a reanalysis of nonstandard neutrino-down-quark interactions of electron and tau neutrinos using solar, reactor and accelerator data. In addition updating the analysis by including new solar data from SNO phase III and Borexino, as well as new KamLAND data and solar fluxes, a key role is played in our analysis by the combination of these results with the CHARM data. The latter allows us to better constrain the axial and axial-vector electron and tau-neutrino nonstandard interaction parameters characterizing the deviations from the Standard Model predictions.