Associated production of heavy Higgs bosons with a b(b)over-bar pair in the nonholomorphic MSSM and LHC searches

In the NonHolomorphic Supersymmetric Standard Model (NHSSM), the Yukawa couplings of the bottom quark (y(b)) and the tau lepton (y(tau)) might receive substantial supersymmetric (SUSY) radiative corrections which have prominent dependencies on the NHSSM-specific trilinear soft parameters, A(b)(') and A(tau)('), respectively, in addition to their well-known dependence on tan beta as is already present in the Minimal SUSY Standard Model (MSSM). We study to what extent these could affect the production cross sections of the heavy Higgs bosons (H and A) in association with a pair of b-quarks and their decay branching ratios, in particular, to a tau(tau) over bar pair and compare them with those obtained in the MSSM. Requiring compliance with the recently observed upper bounds on the product of their total cross section and the branching ratio to tau(tau) over bar at the 13 TeV run of the Large Hadron Collider (LHC), with data worth 139 fb(-1), results in an altered exclusion region in the customary m(A) - tan beta plane in the framework of the NHSSM when compared to what is derived by the LHC experiments within an MSSM setup. Such alterations are estimated to be pronounced only for large tan beta (>= 40) and for large, negative A(b)(')when one finds a reinforced exclusion of the m(A) - tan beta plane with an excluded m(A) value larger by approximate to 200 GeV, compared to the MSSM case, at tan beta = 60. On the other hand, the maximum relaxation in m(A), for a similarly large but positive A(b)('), barely exceeds approximate to 100 GeV as a result of complementary variations in production cross sections and decay branching fractions of the heavy, neutral Higgs bosons.

Automated summary

In the NonHolomorphic Supersymmetric Standard Model, the research investigates the relationship between the Yukawa couplings of the bottom quark and the tau lepton and the production cross sections and decay branching ratios of heavy Higgs bosons. The results show that in the NHSSM, the exclusion region in the m(A) - tan beta plane is larger compared to the MSSM, particularly for large tan beta and negative A(b)'. However, the relaxation in m(A) is more limited for large and positive A(b)' due to complementary variations in production cross sections and decay branching fractions.