Two parton shower background for associate W Higgs production

TL;DR

This paper analyzes the background from two parton showers in associate W Higgs production, showing it is larger than the signal but negligible at LHC energies due to overlapping singularities.

Contribution

It provides detailed calculations of the enhanced diagrams' contribution, demonstrating their negligible effect at LHC energies.

Findings

Background is 1-2.5 times larger than the signal.

Background does not depend on rapidity difference.

Overlapping singularities lead to negligible contribution at LHC energies.

Abstract

The estimates of the background for the associate W Higgs production, which stems from the two parton shower production. It is about 1 - 2.5 times larger than the signal. However, this background does not depend on the rapidity difference between the W and the $b \bar{b}$ pair, while the signal peaks when the rapidity difference is zero. The detailed calculations for the enhanced diagrams' contribution to this process, are presented, and it is shown that the overlapping singularities, being important theoretically, lead to a negligible contribution for the LHC range of energies