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| Author | : |
| Publisher | : |
| Total Pages | : 188 |
| Release | : 2008 |
| Genre | : Supersymmetry |
| ISBN | : |
| Author | : David J. Miller |
| Publisher | : |
| Total Pages | : 36 |
| Release | : 2003 |
| Genre | : |
| ISBN | : |
| Author | : Shaaban Khalil |
| Publisher | : CRC Press |
| Total Pages | : 394 |
| Release | : 2017-12-06 |
| Genre | : Science |
| ISBN | : 1315350874 |
Supersymmetry (SUSY) is one of the most important ideas ever conceived in particle physics. It is a symmetry that relates known elementary particles of a certain spin to as yet undiscovered particles that differ by half a unit of that spin (known as Superparticles). Supersymmetric models now stand as the most promising candidates for a unified theory beyond the Standard Model (SM). SUSY is an elegant and simple theory, but its existence lacks direct proof. Instead of dismissing supersymmetry altogether, Supersymmetry Beyond Minimality: from Theory to Experiment suggests that SUSY may exist in more complex and subtle manifestation than the minimal model. The book explores in detail non-minimal SUSY models, in a bottom-up approach that interconnects experimental phenomena in the fermionic and bosonic sectors. The book considers with equal emphasis the Higgs and Superparticle sectors, and explains both collider and non-collider experiments. Uniquely, the book explores charge/parity and lepton flavour violation. Supersymmetry Beyond Minimality: from Theory to Experiment provides an introduction to well-motivated examples of such non-minimal SUSY models, including the ingredients for generating neutrino masses and/or relaxing the tension with the heavily constraining Large Hadron Collider (LHC) data. Examples of these scenarios are explored in depth, in particular the discussions on Next-to-Minimal Supersymmetric SM (NMSSM) and B-L Supersymmetric SM (BLSSM).
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| Publisher | : |
| Total Pages | : 144 |
| Release | : 2013 |
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The Minimal Supersymmetric Standard Model (MSSM) has been studied as a shining example of the success of supersymmetry in adding structure and control to the Higgs sector. Along with the MSSM, supersymmetry can be used to house more diverse and complex models to take advantage of the new experimental discoveries. Recent developments in collider physics with the 7 and 8 TeV runs of the Large Hadron Collider (LHC) have provided a window into the Higgs sector. The 5 sigma discovery of a Higgs-like boson was announced in July 2012 with the analysis of the combined luminosity of 10 inverse fb. To that end, we explore Higgs doublet and singlet extensions of the MSSM with the goal of identifying possible new signals in the charged Higgs sector that could differentiate these models from the MSSM. Taking a cue from research on Standard Model (SM) singlet additions to the MSSM, the accidental symmetries inherent in the addition of new fields are studied for the cases of purely doublet additions and for a mixture of singlets and doublets in addition to the MSSM particle content. Such models predict additional charged Higgs bosons, which, if detectable at the LHC, are an important probe of this class of theories. Using the most recent LHC data, we investigate the general features of the Higgs sectors of these theories. We find that only a minimal corner of parameter space exists in which two charged Higgses can both be measured at the 14 TeV LHC with 300 inverse fb. Discovery of these models in the near future will require the investigation of additional decay modes of the charged Higgs.
| Author | : Jan Kalinowski |
| Publisher | : |
| Total Pages | : 14 |
| Release | : 1992 |
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| Author | : Nir Polonsky |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 161 |
| Release | : 2003-07-01 |
| Genre | : Science |
| ISBN | : 3540446427 |
The book is a fairly non-technical introduction to modern supersymmetry phenomenology, approaching the subject in new and unique ways. It is suitable both for theorists and experimentalists, and emphasizes an intuitive grasp of the subject. Theoretical and experimental motivations, and the status and prospects of low-energy supersymmetry are discussed. It is shown by explicit construction that the stabilization of any perturbative theory which contains fundamental scalar bosons naturally leads to the notion of supersymmetry. The minimal supersymmetric extension of the standard model is then pedagogically defined and its experimental status is summarized. Renormalization of the models, including unificaiton, is discussed and the linkage between high and low energies is demonstrated, providing a potential probe of Planck-scale physics, such as unified theories. Besides a host of other phenomena, Higgs physics is discussed and the Higgs mass is shown to provide a crucial test of nearly all supersymmetric theories.
| Author | : Damien Matthew Pierce |
| Publisher | : |
| Total Pages | : 138 |
| Release | : 1992 |
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| Total Pages | : |
| Release | : 2003 |
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We present a calculable supersymmetric theory of a composite"fat'" Higgs boson. Electroweak symmetry is broken dynamically through a new gauge interaction that becomes strong at an intermediate scale. The Higgs mass can easily be 200-450 GeV along with the superpartner masses, solving the supersymmetric little hierarchy problem. We explicitly verify that the model is consistent with precision electroweak data without fine-tuning. Gauge coupling unification can be maintained despite the inherently strong dynamics involved in electroweak symmetry breaking. Supersymmetrizing the Standard Model therefore does not imply a light Higgs mass, contrary to the lore in the literature. The Higgs sector of the minimal Fat Higgs model has a mass spectrum that is distinctly different from the Minimal Supersymmetric Standard Model.
| Author | : Béranger Dumont |
| Publisher | : Springer |
| Total Pages | : 271 |
| Release | : 2016-09-21 |
| Genre | : Science |
| ISBN | : 3319449567 |
This work was nominated as an outstanding PhD thesis by the LPSC, Université Grenoble Alpes, France. The LHC Run 1 was a milestone in particle physics, leading to the discovery of the Higgs boson, the last missing piece of the so-called "Standard Model" (SM), and to important constraints on new physics, which challenge popular theories like weak-scale supersymmetry. This thesis provides a detailed account of the legacy of the LHC Run 1 ≤¥regarding these aspects. First, the SM and the need for its extension are presented in a concise yet revealing way. Subsequently, the impact of the LHC Higgs results on scenarios of new physics is assessed in detail, including a careful discussion of the relevant uncertainties. Two approaches are considered: generic modifications of the Higgs couplings, possibly arising from extended Higgs sectors or higher-dimensional operators; and tests of specific new physics models. Lastly, the implications of the null results of the searches for new physics are discussed with a particular focus on supersymmetric dark matter candidates. Here as well, two approaches are presented: the "simplified models" approach, and recasting by event simulation. This thesis stands out for its educational approach, its clear language and the depth of the physics discussion. The methods and tools presented offer readers essential practical tools for future research.
| Author | : Manuel Drees |
| Publisher | : World Scientific |
| Total Pages | : 582 |
| Release | : 2005-01-18 |
| Genre | : Science |
| ISBN | : 9814495344 |
Supersymmetry or SUSY, one of the most beautiful recent ideas of physics, predicts sparticles existing as superpartners of particles. This book gives a theoretical and phenomenological account of sparticles. Starting from a basic level, it provides a comprehensive, pedagogical and user-friendly treatment of the subject of four-dimensional N=1 supersymmetry as well as its observational aspects in high energy physics and cosmology. Part One of the book introduces the requisite formal theory, preceded by a discussion of the naturalness problem. Part Two describes the supersymmetrization of the Standard Model of particle interactions as well as the origin of soft supersymmetry breaking and how it can be mediated from higher energies. Search strategies for sparticles, supersymmetric Higgs bosons, nonminimal scenarios and cosmological implications are some of the other topics covered. Novel features of the book include a dictionary between two-component and four-component spinor notation, a step-by-step derivation of the nonrenormalization theorem, an extended discussion of supersymmetric renormalization group evolution, detailed analyses of minimal and nonminimal models with gravity (including anomaly) mediated and gauge mediated supersymmetry breaking as well as elaborate self-contained presentations of collider signals of sparticles plus supersymmetric Higgs bosons and of supersymmetric cosmology. Appendices list all Feynman rules for the vertices of the Minimal Supersymmetric Standard Model.
