Higgs-mass prediction in the NMSSM with heavy BSM particles

TL;DR

This paper presents a detailed one- and two-loop calculation of the Higgs mass in the NMSSM with TeV-scale BSM particles, providing improved predictions and constraints on model parameters.

Contribution

It offers a comprehensive one-loop and two-loop correction calculation for the Higgs mass in the NMSSM with heavy BSM particles, including an uncertainty estimation method.

Findings

Enhanced accuracy in Higgs mass prediction in NMSSM

Method to estimate theoretical uncertainties

Constraints on NMSSM parameters from Higgs mass measurement

Abstract

We address the prediction for the mass of the SM-like Higgs boson in NMSSM scenarios where all BSM particles, including the singlets, have masses at the TeV scale. We provide a full one-loop computation of the matching condition for the quartic Higgs coupling in the NMSSM, supplemented with the two-loop contributions that involve the strong gauge coupling. We discuss the impact of the one- and two-loop corrections that are specific to the NMSSM on the prediction for the Higgs mass, and propose a method to estimate of the uncertainty associated with the uncomputed higher-order terms. Finally, we illustrate how the measured value of the Higgs mass can be used to constrain some yet-unmeasured parameters of the NMSSM.