Top and bottom tensor couplings from a color octet scalar

TL;DR

This paper calculates one-loop effects of a color octet scalar on tensor anomalous couplings of top and bottom quarks, comparing predictions with experimental constraints to explore potential new physics signals.

Contribution

It provides the first detailed computation of tensor anomalous couplings induced by a color octet scalar at one-loop level.

Findings

Predicted tensor couplings are within current experimental bounds.

Constraints on model parameters limit the size of possible new physics effects.

Results guide future searches for scalar-induced anomalous couplings.

Abstract

We compute the one-loop contributions from a color octet scalar to the tensor anomalous couplings of top and bottom quarks to gluons, photons and W bosons. We use known constraints on the parameters of the model to compare the predicted size of these couplings with existing phenomenological constraints.