Gauge supermultiplets in the minimal supersymmetric standard model. A minimal supersymmetric cosmological model introduction standard model of cosmology moduli and gravitinos a minimal supersymmetric cosmological model mssm mscm thermal in ation. Renormalization of the minimal supersymmetric standard model. Pdf these lecture notes are from a first course on the minimal supersymmetric standard model. Martin department of physics, northern illinois university, dekalb il 60115 i provide a pedagogical introduction to supersymmetry. The level of discussion is aimed at readers who are familiar with the standard model and quantum field theory, but who have had little or no prior exposure to supersymmetry. It has a virtue of allowing non trivial interactions between. I provide a pedagogical introduction to supersymmetry. The nexttominimal supersymmetric extension of the standard model nmssm is one of the most favored supersymmetric models. The three largest contributions come from the higgs selfloop, the w loop and the top quark loop.
Allanach damtp, cms, university of cambridge, cambridge, cb3 0fy, united kingdom. In this chapter we examine simple toy models of supersymmetric eld theories. These lectures1 are devised as an introduction to the minimal supersymmetric standard model. The mssm removes dangerous contributions to the higgs mass provided that the superpartners of the known particles are not too far above the weak scale. This doctoral thesis has been accepted by purdue university, west lafayette, usa.
We first motivate the particle content of the theory by examining the quantum numbers of the known standard model particles and by the. Standard model nmssm, with an explicit term and a supersymmetric mass for the singlet super. These are quantum mechanical systems possessing supersymmetry 1. In the supersymmetric extension of the standard model this would couple to the higgs as sjhj2jsj2. Renormalization group invariants in the minimal supersymmetric. It is minimal, in a sense that, the gauge group is su3c.
Vempati1 1centre for high energy physics, indian institute of science, bangalore 560 012, india. The second second aim of these notes is to use our understanding of nonperturbative aspects of particular supersymmetric models as a window on strongly coupled quantum. The minimal supersymmetric standard model mssm, which is the model obtained after making the standard model supersymmetric, uses the last of these mechanisms to break supersymmetry by the introduction of a soft breaking lagrangian. The renormalization of the minimal supersymmetric standard model mssm is presented. Introduction to supersymmetry joseph conlon hilary term 2010. Topics covered include field content of the mssm, electroweak symmetry breaking, the. Renormalization group study of the minimal supersymmetric.
E 8 heterotic string, naturally yields a realistic grand unified theory gut of gauge group along e n series, including sm itself. References martin, a supersymmetric primer, hepph9709356 last update peskins lecture notes. The minimal supersymmetric extension of the standard model, where supersymmetric masses lie below a few tev, provides simple example of successful gauge coupling uni. The minimal supersymmetric standard model mssm is introduced in this chapter. A minimal supersymmetric cosmological model ewan stewart kaist 22 november 2017 ctpu s kim, wi park, eds arxiv. Introduction to supersymmetry university of oxford. Introduction one of the testing grounds of grand uni. Still, there are several reasons to believe that new physics should. Pdf inflation and the minimal supersymmetric standard model. Standard model, where supersymmetric masses lie below a few tev, provides simple example of successful gauge. Symmetry breaking in a u1 extended nonminimal supersymmetric. Minimal supersymmetric standard model project gutenberg. The first realistic supersymmetric version of the standard model was proposed in 1977 by pierre fayet and is known as the minimal supersymmetric standard model or mssm for short. Next the muoniumantimuonium oscillation time scale in a supersymmetric susy extension of the standard model is calculated.
The minimal supersymmetric standard model mssm csaba cs aki 1 center for theoretical physics laboratory for nuclear science and department of physics massachusetts institute of technology cambridge, ma 029, usa abstract the structure of the mssm is. The lower bound on the ratio of the two higgs field vevs is also discussed by using experimental results. Electron anomalous magnetic moment experiments majorana fermions minimal supersymmetric standard model muoniumanitmuonium time evolution muoniumantimuonium oscillation neutrino masses and mixings seesaw mechanism supersymmetry studies atmospheric and solar neutrinos. Symmetry breaking in a u1 extended nonminimal supersymmetric standard model. Introduction although weakscale supersymmetry susy 1 arguably. After an introduction to the model, the higgs sector and the neutralino sector are discussed in detail. The minimal supersymmetric standard model mssm provides an attractive scheme for physics beyond the sm. The status of the minimal supersymmetric standard model. The status of the minimal supersymmetric standard model and beyond howard e. In the most general framework with minimal eld content and rparity conservation. The minimal supersymmetric standard model mssm with universal soft breaking terms has a negligible effect on the rare cu. We recall how the idea of softly broken supersymmetry led to the construction of the supersymmetric standard model in 1981.
The status of the minimal supersymmetric standard model and. Searching for beyond the minimal supersymmetric standard. The particle spectrum is doubled, yet all the interactions of the new susy particles with the standard model sm sector is fixed by. The nextto minimal supersymmetric extension of the standard model nmssm is one of the most favored supersymmetric models. The minimal supersymmetric standard model mssm is an extension to the standard model that realizes supersymmetry. Soft supersymmetry breaking and the supersymmetric. Correspondingly, therefore, quite accurate calculations of the physical observables are required. This would correct the higgs propagator at oneloop as 2m h. Chiral supermultiplets in the minimal supersymmetric standard model. Pdf the nexttominimal supersymmetric standard model. Soft supersymmetry breaking and the supersymmetric standard model savas dimopoulosa aphysics department, stanford university, stanford, ca 943054060, usa. Oneloop effects of minimal supersymmetric standard model. The standard model, supersymmetry and zoofinder at cdf.
Quest for unification observational motivation dark matter candidate neutrino mass. What is the minimal supersymmetric standard model from f. Naturalness priors and fits to the constrained minimal. We also introduce the supersymmetric standard model as a possible theory for new physics at the tev scale, and discuss its main phenomenological features. It was proposed to solve, amongst other things, the hierarchy problem. Besides, such simple systems are interesting in their own right, since the dynamics of supersymmetric quantum eld theories in nite. The simplest in this species is the minimal supersymmetric standard model mssm 2, 3. Electroweak symmetry breaking in supersymmetric gaugehiggs. We describe symmetry identities that constitute a framework in which the mssm is completely characterized and renormalizability can be proven. Minimales supersymmetrisches standardmodell wikipedia. The minimal supersymmetric standard model mssm michael du rr march 30, 2010 1 particle content names spin 0 spin 12 su3 c.
Here there are no technical di culties hiding the essential structures. Supersymmetric standard model oder nonminimal supersymmetric sm. In the course of these lectures, we will introduce the basic features of the supersymmetric standard model, the particle content, the structure of the lagrangian, feynman rules, supersymmetric. An extension of the minimal supersymmetric standard model to include nonrenormalizable terms andor dirac neutrino masses might support either aterm inflation or modular inflation. The minimal supersymmetric standard model mssm michael du rr march 30, 2010. The notation demonstrates how the mssm is an extension of the standard model with the introduction of the new supersymmetry. Its supersymmetric extension, the minimal supersymmetric standard model, is a very popular candidate for the next re. Search for minimal supersymmetric standard model higgs bosons. Minimal supersymmetric standard model yasaman farzan ipm, tehran.
On the other hand, no direct evidence of new physics beyond the standard model has been found, yet. I analyze two limiting cases of the model, characterized by the size of the supersymmetric mass for the singlet super. Minimal supersymmetric standard model oxford scholarship. Although this solution is similar to the one provided by the nextto minimal supersymmetric standard model nmssm 152, the umssm is free of the cosmological domain wall problem because the i. Search for minimal supersymmetric standard model higgs.
Minimal supersymmetric standard model now let us turn to the model realizing the idea of supersymmetry. World heritage encyclopedia, the aggregation of the largest online encyclopedias. Third, the existence of dark matter, which makes up approximately one quarter of the energy density of the universe, cannot be explained within the standard model of. We explore a supersymmetric extension of the standard model sm from ftheory, under certain minimal assumptions on higgs sector. If string theory is telling us something about nature, nature is supersym. Muoniumantimuonium oscillations in an extended minimal. Mssm is the minimal supersymmetrical model as it considers only the minimum number of new particle states and new interactions consistent with phenomenology. Applications extension of possible symmetry groups. Unification of gauge coupling constants in the minimal.
Theoretical, experimental, and cosmological constraints are studied. The hierarchy problem supermultiplets particle content of the minimal supersymmetric standard model mssm need for soft breaking of supersymmetry the wesszumino model 3. The minimal supersymmetric standard model modern physics. Electroweak symmetry breaking in supersymmetric gauge. Supersymmetry pairs bosons with fermions, so every standard model particle has a superpartner yet undiscovered. The soft breaking lagrangian contains explicit mass terms for superpart. A minimal supersymmetric cosmological model introduction standard model of cosmology moduli and gravitinos a minimal supersymmetric cosmological model. We have calculated cross sections and decay branching ratios at the oneloop level using the gracesusyloop system 59.
Only one fermionic generator n 1 for the supersymmetry. A detailed presentation of the minimal supersymmetric standard model mssm and some of its phenomenological implications. Simple enough for a beginner, but challenging enough for an advanced student, supersymmetry demystified is your key to. First, it is supersymmetric invariant up to total spacetime derivative since it is the. Soft supersymmetry breaking and the supersymmetric standard model. The level of discussion is aimed at readers who are familiar with the standard model and quantum. We therefore study a general model with nonuniversal.
Motivation and introduction to supersymmetry motivation. This chapter examines the minimal supersymmetric standard model mssm, which is the simplest extension of the standard model sm incorporating susy. As an explicit model, the minimal supersymmetric standard model mssm is studied in this paper. These lecture notes are based on a first course on the minimal supersymmetric standard model. Minimal supersymmetric standard model springerlink.
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