共查询到20条相似文献,搜索用时 0 毫秒
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Atsushi Yamada 《Zeitschrift fur Physik C Particles and Fields》1994,61(2):247-263
We discuss the Higgs sector of the minimal supersymmetric standard model including effects of radiative corrections. The formalism is explained in detail for computing radiative corrections to the masses and the coupling constants of the Higgs bosons. The radiative corrections to the masses are studied in the on-shell renormalization scheme. The radiative corrections to the mixing angles between the two CP-even Higgs bosons and the Higgs self-coupling constants are investigated in a simple procedure. The explicit analytic expressions are given for the radiative corrections due to the loops containing the top and bottom quarks and their superpartners. Simple approximate formulae are derived from the analytic expressions obtained in the on-shell renormalization scheme. We numerically study the effects of radiative corrections on the mass of the lighter Higgs boson and the mixing angles between the two CP-even Higgs bosons. 相似文献
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《Physics letters. [Part B]》1987,195(3):397-406
A Coulomb gas representation for the Ramond sectors of the N = 1 supersymmetric models is constructed. The fusion rules and the 4-point functions for the Ramond fields are calculated explicitly by this method and used to describe the Z2 odd sectors of the tricritical Ising model and of the critical Kosterlitz-Thouless XY model. 相似文献
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Abdelhak Djouadi 《The European Physical Journal C - Particles and Fields》2009,59(2):389-426
One of the main motivations for low-energy supersymmetric theories is their ability to address the hierarchy and naturalness
problems in the Higgs sector of the standard model. In these theories, at least two doublets of scalar fields are required
to break the electroweak symmetry and to generate the masses of the elementary particles, resulting in a rather rich Higgs
spectrum. The search for the Higgs bosons of supersymmetry and the determination of their basic properties is one of the major
goals of high-energy colliders and, in particular, the LHC, which will soon start operation. We review the salient features
of the Higgs sector of the minimal supersymmetric standard model and of some of its extensions and summarize the prospects
for probing them at the LHC and at the future ILC.
In memoriam of Julius Wess, 1934–2007. 相似文献
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Howard E. Haber Ralf Hempfling André H. Hoang 《Zeitschrift fur Physik C Particles and Fields》1997,75(3):539-554
To obtain the most accurate predictions for the Higgs masses in the minimal supersymmetric model (MSSM), one should compute the full set of one-loop radiative corrections, resum the large logarithms to all orders, and add the dominant two-loop effects. A complete computation following this procedure yields a complex set of formulae which must be analyzed numerically. We discuss a very simple approximation scheme which includes the most important terms from each of the three components mentioned above. We estimate that the Higgs masses computed using our scheme lie within 2 GeV of their theoretically predicted values over a very large fraction of MSSM parameter space. 相似文献
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We study the implication of triviality on Higgs sector in next to minimal supersymmetric model (NMSSM) using variational field
theory. It is shown that the mass of the lightest Higgs boson in NMSSM has an upper bound ∼10M
W which is of the same order as that in the standard model. 相似文献
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A. Dabelstein 《Zeitschrift fur Physik C Particles and Fields》1995,67(3):495-511
The structure of the Higgs sector in the minimal supersymmetric standard model is reviewed at the oneloop level. An on-shell renormalization scheme of the MSSM Higgs sector is presented in detail together with the complete list of formulae for the neutral Higgs masses at the one-loop level. The results of a complete one-loop calculation for the mass spectrum of the neutral MSSM Higgs bosons and the quality of simpler Born-like approximations are discussed for sfermion and gaugino masses in the range of the electroweak scale. 相似文献
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D.R.T. Jones 《Physics letters. [Part B]》1977,72(2):199
The renormalization group function β(g) is found to vanish in the two-loop approximation for a recently derived SU(4) supersymmetric Yang-Mills theory. 相似文献
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《Physics letters. [Part B]》1988,208(2):315-318
It is shown that LEP can set a lower bound on the mass of the lightest supersymmetric Higgs boson (H20) only if both processes Z0→H20μ+μ− and Z0→H20H30 (where H30 is an extra supersymmetric Higgs) are simultaneously considered. 相似文献
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Bogdan A. Dobrescu Patrick J. Fox 《The European Physical Journal C - Particles and Fields》2010,70(1-2):263-270
We show that the parameter space of the Minimal Supersymmetric Standard Model includes a region where the down-type fermion masses are generated by the loop-induced couplings to the up-type Higgs doublet. In this region the down-type Higgs doublet does not acquire a vacuum expectation value at tree level, and has sizable couplings in the superpotential to the tau leptons and bottom quarks. Besides a light standard-like Higgs boson, the Higgs spectrum includes the nearly degenerate states of a heavy spin-0 doublet which can be produced through their couplings to the b quark and decay predominantly into τ + τ ? or τν. 相似文献