Generalized soft breaking leverage for the MSSM

Abstract

In this work we study implications of additional non-holomorphic soft breaking terms (µ , A t , A b and A τ ) on the MSSM phenomenology. By respecting the existing bounds on the mass measurements and restrictions coming from certain B-decays, we probe reactions of the MSSM to these additional soft breaking terms. We provide examples in which some slightly excluded solutions of the MSSM can be made to be consistent with the current experimental results. During this, even after applying additional fine-tuning constraints the non-holomorphic terms are allowed to be as large as hundreds of GeV. Such terms prove that they are capable of enriching the phenomenology and varying the mass spectra of the MSSM heavily, with a reasonable amount of fine-tuning.We observe that higgsinos, the lightest stop, the heavy Higgs boson states A, H, H ± , sbottom and stau exhibit the highest sensitivity to the new terms. We also show how the light stop can become nearly degenerate with top quark using these nonholomorphic terms.

Exploring non-holomorphic soft terms in the framework of gauge mediated supersymmetry breaking

“…All the above that restrict the MSSM parameter space may be addressed reasonably well when one includes non-holomorphic (NH) soft terms on the top of the usual holomorphic soft terms of MSSM [69,70]. Staying within an MSSM setup terms like φ 2 φ * or a higgsino mass term like ψψ can be soft SUSY breaking in nature if there is no presence of a gauge singlet field [71].…”

“…Staying within an MSSM setup terms like φ 2 φ * or a higgsino mass term like ψψ can be soft SUSY breaking in nature if there is no presence of a gauge singlet field [71]. There have been several works over the past two decades [69][70][71][72][73][74][75][76][77][78][79][80][81][82] that analyzed the effects of introducing NH soft terms. 2 There are three distinct signatures i) the trilinear NH terms may enhance L-R mixing thus influencing various phenomenologies, ii) higgsinos get an additional soft-term source, iii) the Higgs potential remains unaffected at the tree level thus electroweak fine-tuning may hardly change.…”

“…2 There are three distinct signatures i) the trilinear NH terms may enhance L-R mixing thus influencing various phenomenologies, ii) higgsinos get an additional soft-term source, iii) the Higgs potential remains unaffected at the tree level thus electroweak fine-tuning may hardly change. The latter effect can give rise to a valid higgsino dark matter with low fine-tuning, whereas the L-R mixing effect may contribute to (g − 2) µ , Br(B → X s + γ), or the higgs mass radiative corrections [69,70,[78][79][80][81]. The NH soft terms can also influence on the scalar potential terms involving colored/charged scalars [82].…”

Exploring charge and color breaking vacuum in non-holomorphic MSSM

“…It has been shown in refs. [33,34] that extension of the generic MSSM via the inclusion of non-holomorphic (NH) soft SUSY breaking terms, quite satisfactorily ameliorates all the above problems of the MSSM. This extended MSSM, namely the Non-Holomorphic MSSM (NHSSM) has the particle content identical to that of the MSSM, but have extra soft SUSY breaking terms.…”

“…It has been shown that in the absence of any gauge singlet it is possible to extend the SUSY breaking soft sector by including NH soft SUSY breaking terms, without aggravating any quadratic divergence [71,74,80]. Thus, the NH soft terms of the NHSSM in general that include trilinear coupling terms as well as a NH higgsino mass (µ ) term are given by [33,83] …”