Anomalous Top and Bottom Yukawa Couplings and LHC Run 1 Data

TL;DR

This paper investigates whether deviations in top and bottom Yukawa couplings from Standard Model predictions are compatible with LHC Run 1 data, suggesting potential signs of new physics detectable with future measurements.

Contribution

It demonstrates that sizable anomalous Yukawa couplings for top and bottom quarks can fit existing LHC data, and discusses a simple model that produces such deviations.

Findings

Sizable deviations in Yukawa couplings are consistent with LHC data.

Future measurements at LHC Run 2 can reveal new physics.

A simple model can generate anomalous Yukawa couplings.

Abstract

In some extensions of the Standard Model, Yukawa couplings of the physical Higgs boson can be deviated from those in the Standard Model. We study a possibility whether or not such anomalous Yukawa couplings are consistent with the LHC Run 1 data. It is found that sizable deviations of top and bottom (and tau) Yukawa couplings from the Standard Model predictions can nicely fit the data. New physics beyond the Standard Model can be revealed through more precise measurements of such anomalous Yukawa couplings at the LHC Run 2 in the near future. We also discuss a simple setup which can leads to anomalous Yukawa couplings.