The Higgs Sector of the Mssm in the Decoupling Limit
نویسندگان
چکیده
We study the heavy Higgs sector of the MSSM composed of the H±, H and A particles in the so-called decoupling limit where mA0 mZ . By integrating out these heavy Higgs particles to one-loop, we compute the effective action for the electroweak gauge bosons and find out that, in the decoupling limit, all the heavy Higgs effects can be absorbed into redefinitions of the Standard Model electroweak parameters. This demonstrates explicitely that the decoupling theorem works for the heavy MSSM Higgs particles. This is also compared with the paradigmatic and different case of the Standard Model heavy Higgs particle. Finally, this work together with our two previous works, complete the demonstration that all the non-standard particles in the MSSM, namely, squarks, sleptons, charginos, neutralinos and the heavy Higgs particles, decouple to one-loop from the low energy electroweak gauge boson physics. ? e-mail: [email protected] † e-mail: [email protected] ‡ e-mail: [email protected]
منابع مشابه
Implications of the LEP Higgs Bounds for the MSSM Stop Sector
The implications of the LEP Higgs bounds on the MSSM stop masses and mixing are compared in two different regions of the Higgs parameter space. The first region is the Higgs decoupling limit, in which the bound on the mass of the lighter Higgs is mh ≥ 114.4 GeV, and the second region is near a non-decoupling limit with mh ≃ 93 GeV, in which the masses of all the physical Higgs bosons are requir...
متن کاملDecoupling and the Radiatively-Corrected MSSM Higgs Sector
In the decoupling limit of a non-minimal Higgs sector, the lightest CP-even Higgs boson (h) is indistinguishable from the Standard Model (SM) Higgs boson. In the two-Higgs-doublet sector of the MSSM, the approach to the decoupling limit (for mA ≫ mZ) persists, even in the presence of potentially large (tanβ-enhanced) radiative corrections to the hbb̄ coupling. Radiative corrections can also gene...
متن کاملSelf - interactions of the lightest MSSM Higgs boson in the large pseudoscalar - mass limit
We investigate the decoupling properties of the Higgs-sector-induced one-loop corrections in the lightest Higgs-boson self-couplings, in the framework of the Minimal Supersymmetric Standard Model (MSSM). The renormalized n-point vertex functions with external Higgs particles in the MSSM and in the SM are derived to the one-loop level and compared in the M A 0 ≫ M Z limit. The computation has be...
متن کاملMSSM Higgs boson in the large pseudoscalar - mass limit
We investigate the decoupling properties of the Higgs-sector-induced one-loop corrections in the lightest Higgs-boson self-couplings, in the framework of the Minimal Supersymmetric Standard Model. The renormalized n-point vertex functions with external Higgs particles in the MSSM and in the SM are derived to one-loop level and compared in the M A 0 ≫ M Z limit. The computation has been done in ...
متن کاملRenormalization-Group-Improved Effective Potential for the MSSM Higgs Sector with Explicit CP Violation
We perform a systematic study of the one-loop renormalization-group-improved effective potential of the minimal supersymmetric extension of the Standard Model (MSSM), including CP violation induced radiatively by soft trilinear interactions related to squarks of the third generation. We calculate the charged and neutral Higgs-boson masses and couplings, including the two-loop logarithmic correc...
متن کامل