Download or read book Dark Matter in Gravity Mediated Supersymmetry Breaking written by and published by . This book was released on 1997 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: In R parity conserving supersymmetric theories, the lightest superpartner (LSP) is stable. The LSPs may comprise a large fraction of the energy density of the current universe, which would lead to dramatic astrophysical consequences. In this talk, he discusses some of the main points they have learned about supersymmetric models from relic abundance considerations of the LSP.

Download or read book Dark Matter in Gauge Mediated Supersymmetry Breaking Using Metastable Vacua written by Motoi Endo and published by . This book was released on 2007 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Physics Beyond the Standard Model written by David Sanford and published by . This book was released on 2012 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this dissertation we consider a number of topical issues in physics beyond the standard model. Motivated by null results from superpartner searches and the tentative Higgs boson signal at mh[subscript], [approximate] 125 GeV, we consider the framework of focus point supersymmetry. Within the focus point framework we examine models in which the neutralino is a thermal relic which saturates the observed dark matter relic density, and generalize the results for dark matter direct detection to generic models with heavy scalars. We also extend the original focus point framework to the case of non-zero A-terms, allowing models in which mh[subscript], [approximate] 125 GeV can be achieved with only 1% fine-tuning in the weak scale. We also consider formal aspects of anomaly-mediated supersymmetry breaking, in particular a recent derivation of anomaly-mediated soft masses using the full supergravity framework and its relation to the original derivation. Finally, we examine models in which recent contradictory results from light dark matter experiments can be partially explained by relaxing the common assumption of equal couplings to protons and neutrons.

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 Of Triggers Supersymmetry and Photons written by Jonas Wûrzinger and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dark Matter in Astro and Particle Physics written by H.V. Klapdor-Kleingrothaus and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 747 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dark matter in the Universe has become one of the most exciting and central fields of astrophysics, particle physics and cosmology. The lectures and talks in this book emphasize the experimental and theoretical status and perspectives of the ongoing search for dark matter, and the future potential of the field into the next millennium, stressing in particular the interplay between astro- and particle physics.

Download or read book Dark Matter in Astrophysics and Particle Physics written by Hans Volker Klapdor-Kleingrothaus and published by World Scientific. This book was released on 2010 with total page 603 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dark matter and dark energy are one of the central mysteries in modern physics, although modern astrophysical and cosmological observations and particle physics experiments can and will provide vital clues in uncovering its true nature. The DARK 2009 Conference brought together World?s leading researchers in both astrophysics and particle physics, providing an opportunity and platform to present their latest results to the community. The topics covered are wide-ranging, from terrestrial underground experiments to space experimental efforts to search for dark matter, and on the theoretical aspects, from the generating of a fifth family as origin of dark matter, extra dimensions and dark matter to non-standard Wigner classes and dark matter. One of the new highlights was certainly a possible connection between a neutrino mass as observed by nuclear double beta decay and the dark energy. Highly important and relevant in its field, the book presents a vital snapshot of the sometimes seemingly disparate areas of dark matter research and offers an exciting overview of current ideas and future directions.

Download or read book Gravity Mediated Supersymmetry Breaking in Six Dimensions written by Adam Falkowski and published by . This book was released on 2005 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Isocurvature Constraints on Gravitationally Produced Superheavy Dark Matter written by and published by . This book was released on 2004 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: We show that the isocurvature perturbations imply that the gravitationally produced superheavy dark matter must have masses larger than few times the Hubble expansion rate at the end of inflation. This together with the bound on tensor to scalar contribution to the CMB induces a lower bound on the reheating temperature for superheavy dark matter to be about 107 GeV. Hence, if the superheavy dark matter scenario is embedded in supergravity models with gravity mediated SUSY breaking, the gravitino bound will squeeze this scenario. Furthermore, the CMB constraint strengthens the statement that gravitationally produced superheavy dark matter scenario prefers a relatively large tensor mode amplitude if the reheating temperature must be less than 109 GeV.

Download or read book Proceedings of the Fourth International Workshop on the Identification of Dark Matter written by Neil John Curwen Spooner and published by World Scientific. This book was released on 2003 with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains written versions of the presentations made at the 4th International Workshop on the Identification of Dark Matter (IDM 2002), held in York, UK, in September 2002. The objective of this workshop series is to assess the status of work attempting to identify what constitutes dark matter OCo in particular, to consider the techniques being used, how successful they are, and what new techniques are likely to improve prospects for identifying likely dark matter candidates in the future. At IDM 2002 special emphasis was placed on recent results obtained in searches for baryonic and non-baryonic dark matter. The proceedings include reviews of major topics on dark matter, as well as short contributed talks."

Download or read book Dark Matter in Astro and Particle Physics written by Hans-Volker Klapdor-Kleingrothaus and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Fourth HEIDELBERG International Conference on Dark Matter in Astro and Particle Physics, DARK2002, was held in Cape Town, South Africa, in the period 4-9 February 2002. This majestic natural area was the site of the first conference of this series (hosted since 1996 in Heidelberg) to be held outside of Germany. Dark Matter has become one of the most exciting and central fields of as trophysics, particle physics and cosmology. The conference covered, as usual for this series, a large range of topics, theoretical and experimental. Topics included Astronomical Evidence for Dark Matter, the Cosmic Microwave Background, Supersymmetry, Inflation and Dark Energy, Structure Formation, Hot and Cold Dark Matter, and Ultrahigh Energy Cosmic Rays all of which were represented by experts in the field. It was very nice to see again many of our 'old' friends in Dark Matter here in South Africa. The organizers were very glad to see, in addition to world experts, the new generation here. Many young participants gave very nice professional talks during the conference. We are grateful to John Ellis for doing an incredible job preparing his excellent summary talk during the sessions. Some special interest and intensive discussions were naturally raised by the first announcement of terrestrial evidence for hot dark matter, obtained from neutrino less double beta decay. This now adds to the evidence for cold dark matter which we have from DAM A for several years already, and which remained unchallenged up to now by other experiments.

Download or read book Electroweak Interactions and Unified Theories written by J. Thanh Van Tran and published by Atlantica Séguier Frontières. This book was released on 1988 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Neutrino Masses at V3 2 written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Theories in which neutrino masses are generated by a conventional see-saw mechanism generically yield masses which are O(v[sup 2]) in units where M[sub Pl] = 1, which is naively too small to explain the results from SuperKamiokande. In supersymmetric theories with gravity mediated supersymmetry breaking, the fundamental small parameter is not v/M[sub Pl], but m[sub I]/M[sub Pl], where m[sub I] is the scale of supersymmetry breaking in the hidden sector. We note that m[sub I][sup 3]/M[sub Pl][sup 2] is only slightly too large to explain SuperKamiokande, and present two models that achieve neutrino masses at this order in m[sub I], one of which has an additional suppression [lambda][sub [tau]][sup 2], while the other has additional suppression arising from a loop factor. The latter model shares a great deal of phenomenology with a class of models previously explored, including the possibility of viable sneutrino dark matter.

Download or read book Topics in the Phenomenology of Two Non minimal Models of Supersymmetry Breaking written by and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis we look at two non-minimal models of supersymmetry breaking. In the first model, we study the phenomenology of deflected mirage mediation, a scenario where gravity, anomaly, and gauge mediation contribute to the soft masses, in light of the 7 and 8 TeV runs of the Large Hadron Collider (LHC) and the dark matter direct detection results from XENON and LUX. We find that the parameter space admits models with both simplified and compressed spectra, which should be visible in the next run of the LHC. We also look at the parameter space from the bottom up, using the electroweak fine-tuning measure and find that there are large regions of parameter space which are not fine-tuned. In the second, we look at models of flavored gauge mediation and explore models with a non-abelian flavor symmetry. In these models the MSSM messenger Yukawa couplings are connected by the non-abelian symmetry, forcing us to model them simultaneously. We comment on the spectra and model building challengers in this paradigm.

Download or read book Sequestering the Gravitino written by and published by . This book was released on 2008 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: In conventional models of gauge-mediated supersymmetry breaking, the lightest supersymmetric particle (LSP) is invariably the gravitino. However, if the supersymmetry breaking sector is strongly coupled, conformal sequestering may raise the mass of the gravitino relative to the remaining soft supersymmetry-breaking masses. In this letter, we demonstrate that such conformal dynamics in gauge-mediated theories may give rise to satisfactory neutralino dark matter while simultaneously solving the flavor and [mu]/B[mu] problems.

Download or read book Journeys Beyond the Standard Model written by Jessica L. Goodman and published by . This book was released on 2013 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis attempts to address two outstanding issues in the Standard Model of particle physics. The first of these two has to do with the lack of a viable dark matter candidate in the Standard Model. Many recent experimental results hint at the possibility of a light dark matter particle. If it is light enough, one may consider producing these particles at colliders. Parts of this thesis considers effective theories of dark matter as a way to develop a language to compare collider searches for dark matter to direct and indirect detection experiments. The second of these two issues explores the more aesthetic problem of the gauge hierarchy through construction of supersymmetry breaking models. In the first set of models, we construct UV completions of O'Raifeartaigh-like models which spontaneously break R symmetry. In the final chapter, we construct a R symmetric GMSB model in which we use Seiberg dynamics to generate supersoft Dirac gaugino masses.

Download or read book Dark Matter Constraints on Supersymmetric Extensions of the Standard Model written by Andreas le Fevre Birkedal-Hansen and published by . This book was released on 2003 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt: