supersymmetry and beyond from the higgs boson to the new physics

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Supersymmetry And Beyond

Author : Gordon Kane
ISBN : 9780465080465
Genre : Science
File Size : 28. 35 MB
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The epic story of the quest to uncover a fully unified theory of physics, revised to reflect the possible discovery of the Higgs Boson.

String Theory And The Real World

Author : Gordon Kane
ISBN : 9781681744902
Genre : Science
File Size : 54. 88 MB
Format : PDF
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This book attempts to explain why 'string theory' may provide the comprehensive underlying theory that describes and explains our world. It is an enthusiastic view of how compactified string/M-theories (plus data that may be reachable) seem to have the possibilities of leading to a comprehensive underlying theory of particle physics and cosmology, perhaps soon. We are living in a hugely exciting era for science, one during which it may be possible to achieve a real and true understanding of our physical world.

Beyond Standard Model Collider Phenomenology Of Higgs Physics And Supersymmetry

Author : Marc Christopher Thomas
ISBN : 9783319434520
Genre : Science
File Size : 49. 12 MB
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This thesis studies collider phenomenology of physics beyond the Standard Model at the Large Hadron Collider (LHC). It also explores in detail advanced topics related to Higgs boson and supersymmetry – one of the most exciting and well-motivated streams in particle physics. In particular, it finds a very large enhancement of multiple Higgs boson production in vector-boson scattering when Higgs couplings to gauge bosons differ from those predicted by the Standard Model. The thesis demonstrates that due to the loss of unitarity, the very large enhancement for triple Higgs boson production takes place. This is a truly novel finding. The thesis also studies the effects of supersymmetric partners of top and bottom quarks on the Higgs production and decay at the LHC, pointing for the first time to non-universal alterations for two main production processes of the Higgs boson at the LHC–vector boson fusion and gluon–gluon fusion. Continuing the exploration of Higgs boson and supersymmetry at the LHC, the thesis extends existing experimental analysis and shows that for a single decay channel the mass of the top quark superpartner below 175 GeV can be completely excluded, which in turn excludes electroweak baryogenesis in the Minimal Supersymmetric Model. This is a major new finding for the HEP community. This thesis is very clearly written and the introduction and conclusions are accessible to a wide spectrum of readers.

New Physics Beyond The Standard Model

Author : Haiying Cai
ISBN : 1267023732
Genre :
File Size : 71. 15 MB
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In this thesis we discuss several extensions of the standard model, with an emphasis on the hierarchy problem. The hierachy problem related to the Higgs boson mass is a strong indication of new physics beyond the Standard Model. In the literature, several mechanisms, e.g., supersymmetry (SUSY), the little Higgs and extra dimensions, are proposed to explain why the Higgs mass can be stabilized to the electroweak scale. In the Standard Model, the largest quadratically divergent contribution to the Higgs mass-squared comes from the top quark loop. We consider a few novel possibilities on how this contribution is cancelled. In the standard SUSY scenario, the quadratic divergence from the fermion loops is cancelled by the scalar superpartners and the SUSY breaking scale determines the masses of the scalars. We propose a new SUSY model, where the superpartner of the top quark is spin-1 rather than spin-0. In little Higgs theories, the Higgs field is realized as a pseudo goldstone boson in a nonlinear sigma model. The smallness of its mass is protected by the global symmetry. Asa variation, we put the little Higgs into an extra dimensional model where the quadratically divergent top loop contribution to the Higgs mass is cancelled by an uncolored heavy ''top quirk" charged under a different SU(3) gauge group. Finally, we consider a supersymmetric warped extra dimensional model where the superpartners have continuum mass spectra. We use the holographic boundary action to study how a mass gap can arise to separate the zero modes from continuum modes. Such extensions of the Standard Model have novel signatures at the Large Hadron Collider.

Constraining Supersymmetric Models

Author : Lisa Zeune
ISBN : 9783319222288
Genre : Science
File Size : 27. 63 MB
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This thesis analyses how supersymmetric (SUSY) extensions of the Standard Model (SM) of particle physics can be constrained using information from Higgs physics, electroweak precision observables and direct searches for new particles. Direct searches for SUSY particles at the LHC have not resulted in any signal so far, and limits on the SUSY parameter space have been set. Measurements of the properties of the observed Higgs boson at 125 GeV as well as of the W boson mass can provide valuable indirect constraints, supplementing the ones from direct searches. Precise calculations are performed for Higgs decays and electroweak precision observables within the minimal supersymmetric extension of the Standard Model and the next to-minimal supersymmetric extension of the Standard Model. Furthermore, a method is presented to reinterpret the LHC limits from direct SUSY searches in more realistic SUSY scenarios. The phenomenological consequences of those results are thoroughly analysed.

Linear Collider Physics In The New Millennium

Author : Keisuke Fujii
ISBN : 9789814482394
Genre : Science
File Size : 24. 80 MB
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The high energy electron-positron linear collider is expected to provide crucial clues to many of the fundamental questions of our time: What is the nature of electroweak symmetry breaking? Does a Standard Model Higgs boson exist, or does nature take the route of supersymmetry, technicolor or extra dimensions, or none of the foregoing? This invaluable book is a collection of articles written by experts on many of the most important topics which the linear collider will focus on. It is aimed primarily at graduate students but will undoubtedly be useful also to any active researcher on the physics of the next generation linear collider. Contents:The Machine and Detector (G A Blair & D J Miller)Higgs Physics at the Linear Collider (J F Gunion et al.)Top Quark Physics (Y Sumino)Supersymmetry and the Linear Collider (J L Feng & M M Nojiri)Dynamical Electroweak Symmetry Breaking (W Kilian)Physics of Electroweak Gauge Bosons (K Mönig)New Physics at the TeV Scale and Beyond (J L Hewett)QCD (P N Burrows)Gamma-Gamma and Other Options (T Takahashi)CP Violation at the Linear Collider (D Atwood & A Soni)Overall Perspective (K Fujii & M E Peskin) Readership: Researchers in high energy, particle and accelerator physics. Keywords:Electron-Positron Linear Collider;Higgs Boson;Top Quark;Supersymmetry;Extra Dimensions;Collider

Search Strategies For New Physics At The Lhc

Author :
ISBN : STANFORD:vr734zr1770
Genre :
File Size : 41. 43 MB
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The LHC is in the frontline of experimental searches for New Physics beyond the Standard Model of Particle Physics. Its power is accompanied by no smaller challenges in analyzing and interpreting its results. In this thesis I explore ways to parameterize new physics phenomena, design search strategies that are sensitive to them, and interpret experimental results in general new physics contexts. In particular, I discuss interpretations of the first ATLAS analysis for supersymmetry with 70/nb of integrated luminosity. I also carry a careful investigation of comprehensive search strategies for new physics with jets and missing energy signatures, and estimate the sensitivity bounds of the 7 TeV LHC to new colored particles decaying to jets and and a neutral particle that escapes detection. Finally, I discuss the implications of the recent LHC excesses hinting to a Higgs boson with mass in the range 142-147 GeV. If confirmed, this range for the Higgs mass will be an important evidence for Split Supersymmetry. I work out the phenomenological predictions of this scenario that will be tested in the very near future by a variety of experiments, including direct and indirect dark matter detection, EDM experiments searching for CP violation and the 7 TeV run of the LHC.

Modern Elementary Particle Physics

Author : Gordon Kane
ISBN : 9781316738528
Genre : Science
File Size : 70. 24 MB
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This book is written for students and scientists wanting to learn about the Standard Model of particle physics. Only an introductory course knowledge about quantum theory is needed. The text provides a pedagogical description of the theory, and incorporates the recent Higgs boson and top quark discoveries. With its clear and engaging style, this new edition retains its essential simplicity. Long and detailed calculations are replaced by simple approximate ones. It includes introductions to accelerators, colliders, and detectors, and several main experimental tests of the Standard Model are explained. Descriptions of some well-motivated extensions of the Standard Model prepare the reader for new developments. It emphasizes the concepts of gauge theories and Higgs physics, electroweak unification and symmetry breaking, and how force strengths vary with energy, providing a solid foundation for those working in the field, and for those who simply want to learn about the Standard Model.

High Energy Physics And Applications

Author : John Ellis
ISBN : UCSD:31822035541895
Genre : Science
File Size : 85. 40 MB
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The workshop was dedicated to topics in elementary particle physics such as: The electroweak precision, supersymmetry, new ideas beyond the standard model and new physics at the Large Hadron Collider (LHC). These proceedings feature a number of plenary and parallel talks as well as poster sessions presented at the workshop.

Supersymmetry After The Higgs Discovery

Author : Ignatios Antoniadis
ISBN : 9783662441725
Genre : Science
File Size : 31. 24 MB
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Supersymmetry (SUSY) is a new symmetry that relates bosons and fermions, which has strong support at both the mathematical and the physical level. This book offers a comprehensive review, following the development of SUSY from its very early days up to present. The order of the contributions should provide the reader with the historical development as well as the latest theoretical updates and interpretations, and experimental constraints from particle accelerators and dark matter searches. It is a great pleasure to bring together here contributions from authors who initiated or have contributed significantly to the development of this theory over so many years. To present a balanced point of view, the book also includes a closing contribution that attempts to describe the physics beyond the Standard Model in the absence of SUSY. The contributions to this book have been previously published in The European Physical Journal C - Particles and Fields.

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