Effect of Anomalous Couplings on the Associated Production of a Single Top Quark and a Higgs Boson at the LHC

TL;DR

This paper investigates how anomalous couplings affect the production rates of single top quarks with Higgs bosons at the LHC, highlighting potential observable enhancements in cross sections.

Contribution

It provides detailed calculations of cross sections for various processes involving single top and Higgs production with anomalous couplings, offering new insights into their effects.

Findings

Anomalous $Wtb$ and $tth$ couplings can significantly increase production cross sections.

Certain signatures could allow detection of Higgs with single top if couplings are anomalous.

Enhanced production rates suggest new physics effects could be observed with sufficient data.

Abstract

We consider the production of a single top quark in association with a Higgs boson at the LHC. In particular, we compute the cross sections for the processes $ p p \to t h j$, $t h b$, $t h W$, $t h j j$, $t h j b$, $t h W j$, $t h W b$ in the presence of the anomalous $Wtb, WWh$ and $tth$ couplings. We find that the anomalous $Wtb$ and $tth$ couplings can enhance the cross sections significantly. We also analyze a few signatures and show that, if these couplings are indeed anomalous, then with enough data, one should be able to observe the production of the Higgs boson in association with single top quark.