Model Dependent Collider Signatures Of Particle Dark Matter
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Model Dependent Collider Signatures Of Particle Dark Matter
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Author : Grace Dupuis
language : en
Publisher:
Release Date : 2017
Model Dependent Collider Signatures Of Particle Dark Matter written by Grace Dupuis and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
"The identity and nature of dark matter (DM) is one of the most important open questions in physics. The idea that dark matter is some exotic particle species is a leading hypothesis, and is strongly supported by cosmological data that favours non-baryonic particle dark matter. Although the Standard Model (SM) of particle physics has been extremely successful in describing observed phenomena, the absence of a DM candidate, in addition to many other unresolved questions, motivates the search for new physics. This thesis presents a study constraining new physics beyond the SM with experimental results, primarily from the Large Hadron Collider (LHC), in several models that are motivated by providing candidates for particle dark matter. The following models and their associated collider signatures are investigated. A Z′ model, in which the extra U(1)′ gauge group is kinetically mixed with the SM hypercharge is first considered. The experimental limits from dilepton production are used to constrain the Z′ mass and kinetic mixing parameter. Contributions of the invisible Z′ decay width are used to further constrain the model parameter space. Next, the production of new coloured fermionic mediators is investigated in a model of scalar, flavoured dark matter. Experimental results from signals characterized by final state jets and missing transverse energy, resulting from mediator pair production and subsequent decay to a quark and the dark matter particle, are used to constrain the mediator mass. A Higgs portal model is also considered, with the addition of a scalar singlet field that mixes with the SM Higgs. The constraints from current LHC Higgs data are established, and prospective signatures at the proposed International Linear Collider (ILC) are investigated; the discovery potential in the remaining allowed parameter space is explored, through precision measurement in double Higgs production. Finally, a scalar extension is also applied to a DM model with two additional scalar mediators, in a model that is motivated by the galactic centre (GC) gamma ray excess seen in data from the Fermi Large Area Telescope. Results from LHC Higgs searches and measurements are used to constrain the scalar parameters in a benchmark model that was fit to the GC excess." --
Particles Strings And Cosmology
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Author : Kiwoon Choi
language : en
Publisher: Springer Science & Business Media
Release Date : 2005-12-12
Particles Strings And Cosmology written by Kiwoon Choi and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-12-12 with Science categories.
PASCOS is an interdisciplinary symposium on the interface of of Particle physics, String theory and Cosmology. Over the past two decades these three disciplines have increasingly become closer. Historically there was always a strong overlap between particle physics and cosmology. This connection has become even stronger with the realization that some of the fundamental issues in cosmology such as the presence of dark matter and dark energy may possibly find a resolution only via new theories of particle physics. At the same time string theory has begun to play an increasingly important role in particle physics as a possible framework for building unified models of particle interaction including gravity. In recent years we have seen an increasing overlap between cosmology and string theory and currently the area of string cosmology is one of the most active fields of research. PASCOS 2005 aimed to provide coherent discussions of recent developments on the interface of the three disciplines and also on their interconnections. In particular, superstring aspects in low energy particle theory (SUSY) and cosmological applications (moduli stabilization) are extensively covered in this volume. Topics include dark matter and dark energy, baryogenesis, flavor and CP violation, neutrino physics, supersymmetry and extra dimensions, flux compactification, string model building, as well as brane cosmology.
Particle Dark Matter
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Author : Gianfranco Bertone
language : en
Publisher: Cambridge University Press
Release Date : 2010-01-07
Particle Dark Matter written by Gianfranco Bertone and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-01-07 with Science categories.
Describes the dark matter problem in particle physics, astrophysics and cosmology for graduate students and researchers.
Searching For Dark Matter With Cosmic Gamma Rays
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Author : Andrea Albert
language : en
Publisher: Morgan & Claypool Publishers
Release Date : 2016-09-06
Searching For Dark Matter With Cosmic Gamma Rays written by Andrea Albert and has been published by Morgan & Claypool Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-09-06 with Science categories.
Searching for Dark Matter with Cosmic Gamma Rays summarizes the evidence for dark matter and what we can learn about its particle nature using cosmic gamma rays. It has almost been 100 years since Fritz Zwicky first detected hints that most of the matter in the Universe that doesn't directly emit or reflect light. Since then, the observational evidence for dark matter has continued to grow. Dark matter may be a new kind of particle that is governed by physics beyond our Standard Model of particle physics. In many models, dark matter annihilation or decay produces gamma rays. There are a variety of instruments observing the gamma-ray sky from tens of MeV to hundreds of TeV. Some make deep, focused observations of small regions, while others provide coverage of the entire sky. Each experiment offers complementary sensitivity to dark matter searches in a variety of target sizes, locations, and dark matter mass scales. We review results from recent gamma-ray experiments including anomalies some have attributed to dark matter. We also discuss how our gamma-ray observations complement other dark matter searches and the prospects for future experiments.
Introduction To The Theory Of The Early Universe Hot Big Bang Theory Second Edition
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Author : Valery A Rubakov
language : en
Publisher: World Scientific
Release Date : 2017-06-29
Introduction To The Theory Of The Early Universe Hot Big Bang Theory Second Edition written by Valery A Rubakov and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-06-29 with Science categories.
This book is written from the viewpoint that a deep connection exists between cosmology and particle physics. It presents the results and ideas on both the homogeneous and isotropic Universe at the hot stage of its evolution and in later stages. The main chapters describe in a systematic and pedagogical way established facts and concepts on the early and the present Universe. The comprehensive treatment, hence, serves as a modern introduction to this rapidly developing field of science. To help in reading the chapters without having to constantly consult other texts, essential materials from General Relativity and the theory of elementary particles are collected in the appendices. Various hypotheses dealing with unsolved problems of cosmology, and often alternative to each other, are discussed at a more advanced level. These concern dark matter, dark energy, matter-antimatter asymmetry, etc.Particle physics and cosmology underwent rapid development between the first and the second editions of this book. In the second edition, many chapters and sections have been revised, and numerical values of particle physics and cosmological parameters have been updated.
Linear Collider Physics In The New Millennium
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Author : Keisuke Fujii
language : en
Publisher: World Scientific
Release Date : 2005
Linear Collider Physics In The New Millennium written by Keisuke Fujii and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Science categories.
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.
Search For Dark Matter Produced In Association With A Higgs Boson Decaying To Two Bottom Quarks At Atlas
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Author : Yangyang Cheng
language : en
Publisher: Springer
Release Date : 2016-09-29
Search For Dark Matter Produced In Association With A Higgs Boson Decaying To Two Bottom Quarks At Atlas written by Yangyang Cheng and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-09-29 with Science categories.
This thesis reports on the search for dark matter in data taken with the ATLAS detector at CERN’s Large Hadron Collider (LHC). The identification of dark matter and the determination of its properties are among the highest priorities in elementary particle physics and cosmology. The most likely candidate, a weakly interacting massive particle, could be produced in the high energy proton-proton collisions at the LHC. The analysis presented here is unique in looking for dark matter produced together with a Higgs boson that decays into its dominant decay mode, a pair of b quarks. If dark matter were seen in this mode, we would learn directly about the production mechanism because of the presence of the Higgs boson. This thesis develops the search technique and presents the most stringent production limit to date.
Phenomena Beyond The Standard Model What Do We Expect For New Physics To Look Like
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Author : Roman Pasechnik
language : en
Publisher: Frontiers Media SA
Release Date : 2020-09-03
Phenomena Beyond The Standard Model What Do We Expect For New Physics To Look Like written by Roman Pasechnik and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-09-03 with Science categories.
This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.
Quantum Effects In The Minimal Supersymmetric Standard Model Proceedings Of The International Workshop
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Author : Joan Sola
language : en
Publisher: World Scientific
Release Date : 1998-08-08
Quantum Effects In The Minimal Supersymmetric Standard Model Proceedings Of The International Workshop written by Joan Sola and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998-08-08 with categories.
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.
10th Conference On The Intersections Of Particle And Nuclear Physics
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Author : Marvin L. Marshak
language : en
Publisher: American Institute of Physics
Release Date : 2010-01-11
10th Conference On The Intersections Of Particle And Nuclear Physics written by Marvin L. Marshak and has been published by American Institute of Physics this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-01-11 with Science categories.
CIPANP 2009 explores areas of common interest between nuclear physicists, high energy (particle) physicists and astrophysicists. These areas range from studies of the strong interactions that bind nuclei together to physics of the very early Universe and include such topics as neutrinos, hadron physics, spin physics, heavy ion physics, QCD and heavy flavor physics. The Conference papers include descriptions of searches for "new physics", phenomena that cannot be accounted for by current theories.