The properties of the Higgs bosons and Pair Production of the SM-like Higgs Boson in \lambda-SUSY at the LHC

TL;DR

This paper investigates the properties and pair production of the SM-like Higgs boson in bb-SUSY with a large bb, highlighting significant enhancements in Higgs self-coupling and production rates under naturalness constraints.

Contribution

It explores the Higgs properties and pair production in bb-SUSY with a focus on the natural parameter space, revealing potential enhancements over the Standard Model predictions.

Findings

Triple Higgs self-coupling can be enhanced by a factor of about 7.

Higgs pair production rate can be up to 10 times larger than the SM.

Naturalness constrains the parameter space significantly.

Abstract

Compared with the MSSM or the NMSSM with a low \lambda, \lambda-SUSY theory with a large \lambda around one has been deemed as a most natural realization of NMSSM. In this work, we treat the next-to-lightest CP-even Higgs boson as the SM-like Higgs boson in \lambda-SUSY and study the properties of the Higgs bosons and the pair production of the SM-like Higgs boson by considering various experiment constraints. We find that naturalness plays an important role in selecting the parameter space of \lambda-SUSY. In the most natural region of parameter space, the triple self coupling of the SM-like Higgs boson compared with its SM prediction may get enhanced by a factor about 7, and the most dominant contribution to the Higgs pair production comes from the triple self coupling of the SM-like Higgs boson and the production rate can be greatly enhanced, maximally 10 times larger than the SM prediction.