# The effect of Topcolor Assisted Technicolor, and other models, on Neutrino Oscillation

## TL;DR

This paper explores how long-baseline neutrino experiments can constrain new physics models like topcolor assisted technicolor by analyzing their effects on neutrino oscillations.

## Contribution

It demonstrates how neutrino oscillation experiments can set limits on parameters of models beyond the Standard Model, such as topcolor assisted technicolor.

## Key findings

- Constraints on new physics coupling constants and masses.
- Potential to limit extra matter effects in neutrino oscillations.
- Relevance for future long-baseline neutrino experiments.

## Abstract

New physics beyond the Standard Model can lead to extra matter effects on neutrino oscillation if the new interactions distinguish among the three flavors of neutrino. In Ref.1, we argued that a long-baseline neutrino oscillation experiment in which the Fermilab-NUMI beam in its high-energy mode is aimed at the planned Hyper-Kamiokande detector would be capable of constraining the size of those extra matter effects, provided the vacuum value of \sin^2 2\theta_{23} is not too close to one. In this talk, we discuss how such a constraint would translate into limits on the coupling constants and masses of new particles in models such as topcolor assisted technicolor.