Abstract
We present the impact of two-loop corrections on the mass of the lightest Higgs boson in the minimalR-symmetric supersymmetric standard model (MRSSM). These shift the Higgs boson mass up by typically 5 GeV or more. The dominant corrections arise from strong interactions, and from the gluon and itsN=2superpartners, the sgluon and Dirac gluino, and these corrections further increase with large Dirac gluino mass. The two-loop contributions governed purely by Yukawa couplings and the MRSSMλ,Λparameters are smaller. We also update our earlier analysis which showed that the MRSSM can accommodate the measured Higgs andWboson masses. Including the two-loop corrections increases the parameter space where the theory prediction agrees with the measurement.
Highlights
The recent discovery at the LHC of a particle consistent with the long sought Higgs boson seemingly completes the Standard Model (SM)
We present the impact of two-loop corrections on the mass of the lightest Higgs boson in the minimal R-symmetric supersymmetric standard model (MRSSM)
A number of experimental observations suggest that the SM cannot be the ultimate theory and many theoretical scenarios for the beyond SM (BSM) physics have been proposed in past decades
Summary
The recent discovery at the LHC of a particle consistent with the long sought Higgs boson seemingly completes the Standard Model (SM). We identified benchmark points BMP1, BMP2, and BMP3 illustrating different viable parameter regions for tan β = 3, 10, 40, respectively, and verified that they are not excluded by further experimental constraints from Higgs observables, collider, and low-energy physics These promising results motivate a more precise computation of the Higgs boson mass in the MRSSM and a more precise parameter analysis. This is facilitated by the Mathematica package SARAH, recently updated by providing SPheno routines, which calculate two-loop corrections to the CP-even Higgs scalars masses in the effective potential approximation and the gaugeless limit [36].
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