Download or read book The Minimal Supersymmetric Standard Model MSSM written by Csaba Csáki and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Weak Scale Supersymmetry written by Howard Baer and published by Cambridge University Press. This book was released on 2023-01-31 with total page 557 pages. Available in PDF, EPUB and Kindle. Book excerpt: This OA text develops the basic concepts of supersymmetry for experimental and phenomenological particle physicists and graduate students.
Download or read book The minimal supersymmetric standard model and its phenomenological implications written by Giorgio Gamberini and published by Edizioni della Normale. This book was released on 1993-10-01 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A way to solve the naturalness problem of the Higgs mass arising from the standard model is to introduce a new symmetry: the supersymmetry. Supersymmetry predicts, along with every particle, its supersymmetric counterpart, which has the same internal quantum numbers, the same mass (if supersymmetry is not broken) and an intrinsic angular momentum differing by half a unity from the first one. Phenomenologically it is evident that if supersymmetry does exist, it is broken. Nowadays it seems that the more realistic and phenomenologically acceptable models of supersymmetry are the minimal N=1 supergravity models. The purpose of this thesis is to study the various experimental possibilities of testing the Minimal Supersymmetric Standard Model (MSSM). Altough the MSSM is only a particular model along a wide class of possible supersymmetric extensions of the standard model, it is considered here because of its simplicity which entails strong and definite phenomenological predictions. We will show that the MSSM can indeed be fully tested in the next high-energy experiments.
Download or read book Quantum Effects In The Minimal Supersymmetric Standard Model Proceedings Of The International Workshop written by Joan Sola and published by World Scientific. This book was released on 1998-08-08 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume constitutes the proceedings of the first conference on the specific subject of radiative corrections (quantum effects) to physical processes within the framework of the minimal supersymmetric standard model (MSSM). While there have been many conferences covering general aspects of supersymmetry, this one brought together leading experts on phenomenological aspects of SUSY and focused on the search for indirect effects of supersymmetric particles. Participants discussed the status and perspectives of the MSSM from the viewpoint of present and future high precision experiments at LEP, Tevatron, LHC and at a future NLC.
Download or read book A Singlet Extension of the Minimal Supersymmetric Standard Model written by and published by . This book was released on 2012 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Solution to the Supersymmetric Fine Tuning Problem Within the MSSM written by and published by . This book was released on 2005 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Weak scale supersymmetry has a generic problem of fine-tuning in reproducing the correct scale for electroweak symmetry breaking. The problem is particularly severe in the minimal supersymmetric extension of the standard model (MSSM). We present a solution to this problem that does not require an extension of the MSSM at the weak scale. Superparticle masses are generated by a comparable mixture of moduli and anomaly mediated contributions, and the messenger scale of supersymmetry breaking is effectively lowered to the TeV region. Crucial elements for the solution are a large A term for the top squarks and a small B term for the Higgs doublets. Requiring no fine-tuning worse than 20%, we obtain rather sharp predictions on the spectrum. The gaugino masses are almost universal at the weak scale with the mass between 450 and 900 GeV. The squark and slepton masses are also nearly universal at the weak scale with the mass a factor of √2 smaller than that of the gauginos. The only exception is the top squarks whose masses split from the other squark masses by about m{sub t}/√2. The lightest Higgs boson mass is smaller than 120 GeV, while the ratio of the vacuum expectation values for the two Higgs doublets, tan [beta], is larger than about 5. The lightest superparticle is the neutral Higgsino of the mass below 190 GeV, which can be dark matter of the universe. The mass of the lighter top squark can be smaller than 300 GeV, which may be relevant for Run II at the Tevatron.
Download or read book Perspectives On Supersymmetry written by Gordon Kane and published by World Scientific. This book was released on 1998-07-03 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: Supersymmetry is at an exciting stage of development. It extends the Standard Model of particle physics into a more powerful theory that both explains more and allows more questions to be addressed. Most important, it opens a window for studying and testing fundamental theories at the Planck scale. Experimentally we are finally entering the intensity and energy regions where superpartners are likely to be detected, and then studied. There has been progress in understanding the remarkable physics implications of supersymmetry, including the derivation of the Higgs mechanism, the unification of the Standard Model forces, cosmological connections such as a candidate for the cold dark matter of the universe and the scalar fields that drive inflation and their potential, the relationship to Planck scale theories, and more.While there are a number of reviews and books where the mathematical structure and uses of supersymmetry can be learned, there are few where the particle physics is the main focus. This book fills that gap. It begins with an excellent pedagogical introduction to the physics and methods and formalism of supersymmetry, by S Martin, which is accessible to anyone with a basic knowledge of the Standard Model of particle physics. Next is an overview of open questions by K Dienes and C Kolda, followed by chapters on topics ranging from how to detect superpartners to connections with Planck scale theories, by leading experts.This invaluable book will allow any interested physicist to understand the coming experimental and theoretical progress in supersymmetry, and will also help students and workers to quickly learn new aspects of supersymmetry they want to pursue.
Download or read book Soft Supersymmetry Breaking Parameter Bounds in the Minimal Supersymmetric Standard Model written by Andrew James Bordner and published by . This book was released on 1994 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Minimal Supersymmetric B l and Left right Models written by Nathan Papapietro and published by . This book was released on 2016 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: We propose a simple gauged U(1)B−L extension of the minimal supersymmetric Standard Model (MSSM), where R-parity is conserved as usual in the MSSM. The global B−L (baryon minus lepton number) symmetry in the MSSM is gauged and three MSSM gauge-singlet chiral multiplets with a unit B −L charge are introduced, ensuring the model free from gauge and gravitational anomalies. We assign an odd R-parity for two of the new chiral multiplets The scalar component of the R-parity even superfield plays the role of a Higgs field to beak the U (1)BL symmetry through its negative mass squared which is radiatively generated by the renormalization group running of soft supersymmetry (SUSY) breaking parameters. Because of our novel R-parity assignment, three light neutrinos are Dirac particles with one massless state. Since R-parity is conserved, the lightest superpartner (LSP) neutralino is a prime candidate of the cosmological dark matter. In particular, the B − L gauge boson (Z ), once discovered at the Large Hadron Collider, will be a novel probe of the Dirac nature of the light neutrinos since its invisible decay processes include the final states with one massless (left-handed) neutrino and two Dirac neutrinos, in sharp contrast with the conventional B − L extension of the SM or MSSM, where the right-handed neutrinos are heavy Majorana particles and decay to the SM leptons. We generalize a variation to the SUSY Left-Right symmetric model based on the gauge group SU (3)c × SU (2)L × SU (2)R × U (1)BL . The charge conjugate SU (2)L singlets are put into SU (2)R doublets, mirroring the former. We only introduce a second Higgs bidoublet to produce realistic fermion mass matrices. We calculate renormalization group evolutions of soft SUSY parameters at the one-loop level down to low energy. We find that an SU (2)R slepton doublet acquires a negative mass squared at low energies, so that the breaking of SU (2)R × U (1)BL → U (1)Y is realized by a non-zero vacuum expectation value of a right-handed sneutrino. Small neutrino masses are produced through neutrino mixings with gauginos. Mass limits on the SU (2)R × U (1)BL sector are obtained by direct search results at the LHC as well as lepton-gaugino mixing bounds from the LEP precision data.
Download or read book Phenomenology of the U 1 extended Minimal Supersymmetric Standard Model written by Hye-Sung Lee and published by . This book was released on 2005 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Supersymmetry in Elementary Particle Physics written by and published by . This book was released on 2008 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: These lectures give a general introduction to supersymmetry, emphasizing its application to models of elementary particle physics at the 100 GeV energy scale. I discuss the following topics: the construction of supersymmetric Lagrangians with scalars, fermions, and gauge bosons, the structure and mass spectrum of the Minimal Supersymmetric Standard Model (MSSM), the measurement of the parameters of the MSSM at high-energy colliders, and the solutions that the MSSM gives to the problems of electroweak symmetry breaking and dark matter.
Download or read book Supersymmetry Beyond Minimality written by Shaaban Khalil and published by CRC Press. This book was released on 2017-12-06 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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).
Download or read book Predicted and Totally Unexpected in the Energy Frontier Opened by LHC written by Antonino Zichichi and published by World Scientific. This book was released on 2011 with total page 685 pages. Available in PDF, EPUB and Kindle. Book excerpt: Antonino Zichichi has contributed to Predicted and Totally Unexpected in the Energy Frontier Opened by Lhc as an editor.Zichichi-Univ of Bologna, Italy, Natl Inst of Nuclear Physics, Italy
Download or read book Properties Of Susy Particles Proceedings Of The 23rd Workshop Of The Infn Eloisatron Project written by Luisa Cifarelli and published by World Scientific. This book was released on 1994-01-18 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this workshop, the super high energy and luminosity frontiers of subnuclear physics were actively investigated. A conceptual design of the highest energy (100+100 TeV) proton-proton collider — the Eloisatron — already exists. There are many reasons to believe that supersymmetry and its local version, supergravity, could be relevant in a fundamental theory of particle reactions. The minimal supersymmetric extension of the standard model (MSSM) is today phenomenologically acceptable, theoretically motivated and calculable. The present and future colliders can play a crucial role in testing supersymmetry experimentally. The purpose of the workshop was therefore to review the main features of the MSSM as well as the possible non-minimal models and the issue of gauge coupling unification. Emphasis was given to theoretical and experimental results relevant to supersymmetric particle searches at present and future colliders.
Download or read book String Theory Research Progress written by Ferenc N. Balogh and published by Nova Publishers. This book was released on 2008 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: String theory is a model of fundamental physics whose building blocks are one-dimensional extended objects called strings, rather than the zero-dimensional point particles that form the basis for the standard model of particle physics. The phrase is often used as shorthand for Superstring theory, as well as related theories such as M-theory. By replacing the point-like particles with strings, an apparently consistent quantum theory of gravity emerges. Moreover, it may be possible to 'unify' the known natural forces (gravitational, electromagnetic, weak nuclear and strong nuclear) by describing them with the same set of equations. Studies of string theory have revealed that it predicts higher-dimensional objects called branes. String theory strongly suggests the existence of ten or eleven (in M-theory) space-time dimensions, as opposed to the usual four (three spatial and one temporal) used in relativity theory.
Download or read book Supersymmetry And Unification Of Fundamental Interactions Susy 93 Proceedings Of The International Workshop written by Pran Nath and published by World Scientific. This book was released on 1993-11-22 with total page 646 pages. Available in PDF, EPUB and Kindle. Book excerpt: The recent high precision results from the LEP supercollider at CERN appear favorable for supergravity unification of the electroweak and the strong forces. The proceedings of the SUSY 93 Workshop focus on further precise predictions of unification which may be observed in the laboratory. In addition, the proceedings cover a wide range of other topics in supersymmetry, supergravity, particle physics, string theory and cosmology and their interconnections. They include both theoretical and experimental papers, hence presenting a complete and comprehensive picture of this important subject.
Download or read book Measurement of the Inclusive Electron Cross Section from Heavy Flavour Decays and Search for Compressed Supersymmetric Scenarios with the ATLAS Experiment written by Moritz Backes and published by Springer. This book was released on 2014-06-11 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first part of this thesis presents the measurement of the inclusive cross-section for electron production from heavy-flavour decays in the electron transverse momentum range 7 GeV
