Download or read book Update on Hidden Sectors with Dark Forces and Dark Matter written by Sarah Andreas and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dark Forces and Dark Matter in a Hidden Sector written by Sarah Andreas and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dark Matter and Dark Forces from a Supersymmetric Hidden Sector written by Sarah Andreas and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Probing Dark Forces and Light Hidden Sectors at Low Energy E e Colliders written by and published by . This book was released on 2009 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: A dark sector - a new non-Abelian gauge group Higgsed or confined near the GeV scale - can be spectacularly probed in low-energy ee− collisions. A low-mass dark sector can explain the annual modulation signal reported by DAMA/LIBRA and the PAMELA, ATIC, and INTEGRAL observations by generating small mass splittings and new interactions for weak-scale dark matter. Some of these observations may be the first signs of a low-mass dark sector that collider searches can definitively confirm. Production and decay of [Omicron](GeV)-mass dark states is mediated by a Higgsed Abelian gauge boson that mixes kinetically with hypercharge. Existing data from BaBar, BELLE, CLEO-c, and KLOE may contain thousands of striking dark-sector events with a high multiplicity of leptons that reconstruct mass resonances and possibly displaced vertices. We discuss the production and decay phenomenology of Higgsed and confined dark sectors and propose ee− collider search strategies. We also use the DAMA/LIBRA signal to estimate the production cross-sections and decay lifetimes for dark-sector states.
Download or read book Matter Dark Matter and Anti Matter written by Alain Mazure and published by Springer Science & Business Media. This book was released on 2011-11-16 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: For over ten years, the dark side of the universe has been headline news. Detailed studies of the rotation of spiral galaxies, and 'mirages' created by clusters of galaxies bending the light from very remote objects, have convinced astronomers of the presence of large quantities of dark (unseen) matter in the cosmos. The most striking fact is that they seem to compromise about 95% of the matter/energy content of the universe. As for ordinary matter, although we are immersed in a sea of dark particles, including primordial neutrinos and photons from fossil cosmological radiation, both we and our environment are made of ordinary, 'baryonic' matter. Authors Mazure and Le Brun present the inventory of matter, baryonic and exotic, and investigating the nature and fate of matter's twin, anti-matter. They show how technological progress has been a result of basic research, in tandem with the evolution of new ideas, and how the combined effect of these advances might help lift the cosmic veil.
Download or read book Light Hidden Sectors written by Joshua Thomas Ruderman and published by . This book was released on 2011 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cold Dark Matter from the Hidden Sector written by Paola Arias and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dark Sectors and New Light Weakly Coupled Particles written by and published by . This book was released on 1900 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Dark sectors, consisting of new, light, weakly-coupled particles that do not interact with the known strong, weak, or electromagnetic forces, are a particularly compelling possibility for new physics. Nature may contain numerous dark sectors, each with their own beautiful structure, distinct particles, and forces. This review summarizes the physics motivation for dark sectors and the exciting opportunities for experimental exploration. It is the summary of the Intensity Frontier subgroup \New, Light, Weakly-coupled Particles" of the Community Summer Study 2013 (Snowmass). We discuss axions, which solve the strong CP problem and are an excellent dark matter candidate, and their generalization to axion-like particles. We also review dark photons and other dark-sector particles, including sub-GeV dark matter, which are theoretically natural, provide for dark matter candidates or new dark matter interactions, and could resolve outstanding puzzles in particle and astro-particle physics. In many cases, the exploration of dark sectors can proceed with existing facilities and comparatively modest experiments. A rich, diverse, and lowcost experimental program has been identied that has the potential for one or more game-changing discoveries. These physics opportunities should be vigorously pursued in the US and elsewhere.
Download or read book Hidden Sector Extensions of the Standard Model written by Jose Miguel No and published by LAP Lambert Academic Publishing. This book was released on 2012-03 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Standard Model (SM) of Particle Physics for the Electroweak and Strong interactions is one of the most successful physical theories ever formulated. However, our present knowledge of Cosmology together with theoretical arguments suggest that the SM is an incomplete description of high energy particle physics, and new physics is expected to be present close to the TeV energy scale. Among the many possibilities for physics beyond the Standard Model, Hidden Sectors (particle sectors that don't feel the Strong and Electroweak forces) appear as natural candidates for solving the various puzzles arising at the interface of particle physics and cosmology, such as the nature of the observed Dark Matter in the Universe or the dynamical generation of an asymmetry in baryonic matter in the Early Universe. Here we perform a study of the main features of the phenomenology of Hidden Sectors related to the cosmology of the Early Universe, the generation of the Dark Matter density and the nature of the Electroweak phase transition. We also analyze the role Hidden Sectors may play in the spontaneous breaking of the Electroweak symmetry, and how they modify the Higgs sector of the SM.
Download or read book Searching for Hidden Sector Dark Matter with Fixed Target Neutrino Experiments written by Patrick deNiverville and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Physics of the Dark Photon written by Marco Fabbrichesi and published by Springer Nature. This book was released on 2020-11-23 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is about the dark photon which is a new gauge boson whose existence has been conjectured. Due to its interaction with the ordinary, visible photon, such a particle can be experimentally detected via specific signatures. In this book, the authors review the physics of the dark photon from the theoretical and experimental point of view. They discuss the difference between the massive and the massless case, highlighting how the two phenomena arise from the same vector portal between the dark and the visible sector. A review of the cosmological and astrophysical observations is provided, together with the connection to dark matter physics. Then, a perspective on current and future experimental limits on the parameters of the massless and massive dark photon is given, as well as the related bounds on milli-charged fermions. The book is intended for graduate students and young researchers who are embarking on dark photon research, and offers them a clear and up-to-date introduction to the subject.
Download or read book Signatures of a New Force in the Dark Matter Sector written by Tracy Robin Slatyer and published by . This book was released on 2010 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hidden Sector Dark Matter written by Jeremie Choquette and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Hidden sector dark matter models provide a possible solution to several key problems in the study of dark matter related to its structure and distribution on galactic and sub-galactic scales. This thesis is the combined result of two research projects related to hidden sector dark matter. The first stud- ies dark matter freeze-out in a hidden sector, showing that in some cases the standard approach to freeze-out is insufficient. This is due to the propensity of a dark sector to resist decreases in temperature upon freeze-out, slowing the process and thereby relaxing the bounds on hidden sector dark matter self-interaction cross sections from freeze-out. The second research project involves constructing a complete model of hidden sector dark matter with an additional SU(2) gauge group to explore the possibility of dark matter as vector boson bound states." --
Download or read book Two Topics in Cosmology written by Wei Xue and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Dark Matter: The evidence for the existence of Dark Matter is compelling based on observations in Astrophysics and Cosmology, while the nature of Dark Matter in Particle Physics is still unclear. Direct Detection is a promising method to detect the recoil energy of nucleons from the scattering of Dark Matter, and indirect searches for Dark Matter put constraints on Dark Matter annihilation and decay, and they give hints about the properties of Dark Matter. We proposed a Millicharged Atomic Dark Matter model, in which the dark constituents of the hidden sector are bound into dark atoms by an unbroken hidden U(1) gauge field. This model is consistent with cosmological and astrophysical constraints, it has the potential to explain the results from the CoGeNT experiment, and it relaxes some tensions from other direct search experiments.UV/IR Divergences in Inflation: Studying the quantum corrections to the two point correlation function of curvature perturbations is an essential step to understand perturbation theory in curved space time. IR divergences may lead to possibly observable consequences in cosmology. By finding the correct way to impose UV and IR cutoffs, we manage to reach a consistent result that all three regularization schemes commonly used -- brute-force cutoff, dimensional regulation, and Pauli-Villars regularization -- all give the same quantum correction to the correlation function. By considering the IR divergences from entropy fields, we explore the effective field theory of inflation in the presence of such fields." --
Download or read book Physics of the Large and the Small written by Csaba Cs ki and published by World Scientific. This book was released on 2011 with total page 851 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume presents a set of pedagogical lectures that introduce particle physics beyond the standard model and particle cosmology to advanced graduate students.
Download or read book The Dark Matter written by Wallace H. Tucker and published by William Morrow. This book was released on 1988 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: A fascinating and highly accessible treatment of the intriguing problem facing astronomers and cosmologists today: What is the universe made of, if only 50 percent of it can be accounted for by the luminous matter observable in galaxies?
Download or read book Dark Sectors 2016 Workshop written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This report, based on the Dark Sectors workshop at SLAC in April 2016, summarizes the scientific importance of searches for dark sector dark matter and forces at masses beneath the weak-scale, the status of this broad international field, the important milestones motivating future exploration, and promising experimental opportunities to reach these milestones over the next 5-10 years.
