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Author : Nicole A. Larsen
Publisher :
ISBN 13 :
Total Pages : 416 pages
Book Rating : 4.:/5 (972 download)
Download or read book An Effective Field Theory Analysis of the First LUX Dark Matter Search written by Nicole A. Larsen and published by . This book was released on 2016 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Shaun Kenneth Alsum
Publisher :
ISBN 13 :
Total Pages : 256 pages
Book Rating : 4.:/5 (119 download)
Download or read book Effective Field Theory Search Results from the LUX Run 4 Data Set, and Construction of the LZ System Test Platforms written by Shaun Kenneth Alsum and published by . This book was released on 2020 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: Astrophysical evidence suggests that roughly 26% of the energy density of the universe is composed of non-baryonic dark matter. Although the presence of dark matter has been confirmed, its precise particle nature remains unknown. A strong candidate for what makes up the majority of dark matter is a class of particles referred to as Weakly Interacting Massive Particles (WIMPs). The Large Underground Xenon (LUX) experiment and the LUX-ZEPPLIN (LZ) experiment are dual-phase xenon Time Projection Chambers (TPCs) designed to detect the direct scattering of one of these WIMPs off of an atomic nucleus. The LUX collaboration uses confidence intervals determined via hypothesis test inversion to set limits on WIMP-nucleon couplings. These hypothesis tests are done using a profile likelihood ratio test statistic. This technique resulted in the LUX 2014 - 2016 (Run 4) data set yielding a world-leading limit on the WIMP-nucleon spin-independent interaction at WIMP masses of ~ 10s of GeV. A model-independent way of investigating WIMP-nucleon interactions is introduced utilizing Effective Field Theory. This framework introduces 14 possible allowed WIMP-nucleon couplings in the non-relativistic regime. Many of these couplings produce signals whose recoil spectra peak at energies above the threshold of our previous spin-independent search, and as such, an all-new analysis was developed to extend LUX's energy range and search for these couplings. Comparison of the LUX Run 4 data set to the models developed in this analysis yielded results that are inconsistent with the background-only model. However, inspection of the data suggests that this is due to an incomplete modeling of the electron recoil background, not due to the presence of a WIMP signal, and therefore only upper limits are reported. Additionally, efforts have been made to improve upon the LUX detector's technology for LZ via the construction of prototype detectors at the SLAC National Accelerator Laboratory.
Author : Vasile Cristian Antochi
Publisher :
ISBN 13 : 9789179118655
Total Pages : pages
Book Rating : 4.1/5 (186 download)
Download or read book Inference on Dark Matter in Effective Field Theories written by Vasile Cristian Antochi and published by . This book was released on 2022 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Enrico Morgante
Publisher : Springer
ISBN 13 : 3319676067
Total Pages : 223 pages
Book Rating : 4.3/5 (196 download)
Download or read book Aspects of WIMP Dark Matter Searches at Colliders and Other Probes written by Enrico Morgante and published by Springer. This book was released on 2017-10-05 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis covers several theoretical aspects of WIMP (weakly interacting massive particles) dark matter searches, with a particular emphasis on colliders. It mainly focuses on the use of effective field theories as a tool for Large Hadron Collider (LHC) searches, discussing in detail the issue of their validity, and on simplified dark matter models, which are receiving a growing attention from the physics community. It highlights the theoretical consistency of simplified models, which is essential in order to correctly exploit their potential and for them to be a common reference when comparing results from different experiments. This thesis is of interest to researchers (both theorists and experimentalists) in the field of dark matter searches, and offers a comprehensive introduction to dark matter and to WIMP searches for students and non-experts.
Author : Mikhail P. Solon
Publisher : Springer
ISBN 13 : 3319251996
Total Pages : 188 pages
Book Rating : 4.3/5 (192 download)
Download or read book Heavy WIMP Effective Theory written by Mikhail P. Solon and published by Springer. This book was released on 2016-02-22 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is about dark matter’s particle nature and the implications of a new symmetry that appears when a hypothetical dark matter particle is heavy compared to known elementary particles. Dark matter exists and composes about 85% of the matter in the universe, but it cannot be explained in terms of the known elementary particles. Discovering dark matter's particle nature is one of the most pressing open problems in particle physics. This thesis derives the implications of a new symmetry that appears when the hypothetical dark matter particle is heavy compared to the known elementary particles, a situation which is well motivated by the null results of searches at the LHC and elsewhere. The new symmetry predicts a universal interaction between dark matter and ordinary matter, which in turn may be used to determine the event rate and detectable energy in dark matter direct detection experiments. The computation of heavy wino and higgsino dark matter presented in this work has become a benchmark for the field of direct detection. This thesis has also spawned a new field of investigation in dark matter indirect detection, determining heavy WIMP annihilation rates using effective field theory methods. It describes a new formalism for implementing Lorentz invariance constraints in nonrelativistic theories, with a surprising result at 1/M^4 order that contradicts the prevailing ansatz in the past 20 years of heavy quark literature. The author has also derived new perturbative QCD results to provide the definitive analysis of key Standard Model observables such as heavy quark scalar matrix elements of the nucleon. This is an influential thesis, with impacts in dark matter phenomenology, field theory formalism and precision hadronic physics.
Author : Johanna Gramling
Publisher : Springer
ISBN 13 : 3319950169
Total Pages : 290 pages
Book Rating : 4.3/5 (199 download)
Download or read book Search for Dark Matter with the ATLAS Detector written by Johanna Gramling and published by Springer. This book was released on 2018-08-01 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses searches for Dark Matter at the CERN’s LHC, the world’s most powerful accelerator. It introduces the relevant theoretical framework and includes an in-depth discussion of the Effective Field Theory approach to Dark Matter production and its validity, as well as an overview of the formalism of Simplified Dark Matter models. Despite overwhelming astrophysical evidence for Dark Matter and numerous experimental efforts to detect it, the nature of Dark Matter still remains a mystery and has become one of the hottest research topics in fundamental physics. Two searches for Dark Matter are presented, performed on data collected with the ATLAS experiment. They analyze missing-energy final states with a jet or with top quarks. The analyses are explained in detail, and the outcomes and their interpretations are discussed, also in view of the precedent analysis of theoretical approaches. Given its depth of coverage, the book represents an excellent reference guide for all physicists interested in understanding the theoretical and experimental considerations relevant to Dark Matter searches at the LHC.
Author : Eugenio Del Nobile
Publisher : Springer Nature
ISBN 13 : 3030952282
Total Pages : 261 pages
Book Rating : 4.0/5 (39 download)
Download or read book The Theory of Direct Dark Matter Detection written by Eugenio Del Nobile and published by Springer Nature. This book was released on 2022-05-09 with total page 261 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a pedagogical guide on how to make computations in direct dark matter (DM) detection. The theory behind the calculation of direct detection cross sections and rates is presented, touching aspects related to elementary particle physics, hadronic physics, nuclear physics, and astrophysics. The book is structured in self-contained sections, covering several topics ranging from the scattering kinematics to the phenomenology of direct DM searches. It follows a model-independent approach, aiming at providing the readers with all that is needed to understand the theory and start their own analysis. Meant for graduate students and researchers with interests in particle physics and phenomenology, it is enriched with several worked examples from standard and non-standard particle DM models. Senior researchers working in different areas related to dark matter, like particle and nuclear physics, astrophysics, and cosmology, find in this book a useful and updated guide for reference.
Author : Ben Geytenbeek
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (126 download)
Download or read book On Effective Field Theory of Dark Matter written by Ben Geytenbeek and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Steven Schramm
Publisher : Springer
ISBN 13 : 3319444530
Total Pages : 341 pages
Book Rating : 4.3/5 (194 download)
Download or read book Searching for Dark Matter with the ATLAS Detector written by Steven Schramm and published by Springer. This book was released on 2016-11-23 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes the search for Dark Matter at the LHC in the mono-jet plus missing transverse momentum final state, using the full dataset recorded in 2012 by the ATLAS Experiment. It is the first time that the number of jets is not explicitly restricted to one or two, thus increasing the sensitivity to new signals. Instead, a balance between the most energetic jet and the missing transverse momentum is required, thus selecting mono-jet-like final states. Collider searches for Dark Matter have typically used signal models employing effective field theories (EFTs), even when comparing to results from direct and indirect detection experiments, where the difference in energy scale renders many such comparisons invalid. The thesis features the first robust and comprehensive treatment of the validity of EFTs in collider searches, and provides a means by which the different classifications of Dark Matter experiments can be compared on a sound and fair basis.
Author : Ruth Pöttgen
Publisher : Springer
ISBN 13 : 3319410458
Total Pages : 325 pages
Book Rating : 4.3/5 (194 download)
Download or read book Search for Dark Matter with ATLAS written by Ruth Pöttgen and published by Springer. This book was released on 2016-06-29 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes in detail a search for weakly interacting massive particles as possible dark matter candidates, making use of so-called mono-jet events. It includes a detailed description of the run-1 system, important operational challenges, and the upgrade for run-2. The nature of dark matter, which accounts for roughly 25% of the energy-matter content of the universe, is one of the biggest open questions in fundamental science. The analysis is based on the full set of proton-proton collisions collected by the ATLAS experiment at the Large Hadron Collider at √s = 8 TeV. Special attention is given to the experimental challenges and analysis techniques, as well as the overall scientific context beyond particle physics. The results complement those of non-collider experiments and yield some of the strongest exclusion bounds on parameters of dark matter models by the end of the Large Hadron Collider run-1. Details of the upgrade of the ATLAS Central Trigger for run-2 are also included.
Author :
Publisher :
ISBN 13 :
Total Pages : 55 pages
Book Rating : 4.:/5 (951 download)
Download or read book The Effective Field Theory of Dark Matter Direct Detection written by and published by . This book was released on 2013 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt: We extend and explore the general non-relativistic effective theory of dark matter (DM) direct detection. We describe the basic non-relativistic building blocks of operators and discuss their symmetry properties, writing down all Galilean-invariant operators up to quadratic order in momentum transfer arising from exchange of particles of spin 1 or less. Any DM particle theory can be translated into the coefficients of an effective operator and any effective operator can be simply related to most general description of the nuclear response. We find several operators which lead to novel nuclear responses. These responses differ significantly from the standard minimal WIMP cases in their relative coupling strengths to various elements, changing how the results from different experiments should be compared against each other. Response functions are evaluated for common DM targets -- F, Na, Ge, I, and Xe -- using standard shell model techniques. We point out that each of the nuclear responses is familiar from past studies of semi-leptonic electroweak interactions, and thus potentially testable in weak interaction studies. We provide tables of the full set of required matrix elements at finite momentum transfer for a range of common elements, making a careful and fully model-independent analysis possible. Finally, we discuss embedding non-relativistic effective theory operators into UV models of dark matter.
Author : Martin Bauer
Publisher : Springer
ISBN 13 : 3030162346
Total Pages : 180 pages
Book Rating : 4.0/5 (31 download)
Download or read book Yet Another Introduction to Dark Matter written by Martin Bauer and published by Springer. This book was released on 2019-06-11 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dark matter is a frequently discussed topic in contemporary particle physics. Written strictly in the language of particle physics and quantum field theory, these course-based lecture notes focus on a set of standard calculations that students need in order to understand weakly interacting dark matter candidates. After introducing some general features of these dark matter agents and their main competitors, the Higgs portal scalar and supersymmetric neutralinos are introduced as our default models. In turn, this serves as a basis for exploring four experimental aspects: the dark matter relic density extracted from the cosmic microwave background; indirect detection including the Fermi galactic center excess; direct detection; and collider searches. Alternative approaches, like an effective theory of dark matter and simplified models, naturally follow from the discussions of these four experimental directions.
Download or read book Dark Matter Effective Field Theory Scattering in Direct Detection Experiments written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Elena Aprile
Publisher : John Wiley & Sons
ISBN 13 : 3527609636
Total Pages : 362 pages
Book Rating : 4.5/5 (276 download)
Download or read book Noble Gas Detectors written by Elena Aprile and published by John Wiley & Sons. This book was released on 2007-02-27 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the physical properties of noble fluids, operational principles of detectors based on these media, and the best technical solutions to the design of these detectors. Essential attention is given to detector technology: purification methods and monitoring of purity, information readout methods, electronics, detection of hard ultra-violet light emission, selection of materials, cryogenics etc. The book is mostly addressed to physicists and graduate students involved in the preparation of fundamental next generation experiments, nuclear engineers developing instrumentation for national nuclear security and for monitoring nuclear materials.
Author : Qing Chen
Publisher :
ISBN 13 :
Total Pages : 125 pages
Book Rating : 4.:/5 (126 download)
Download or read book Effective Field Theory Applications written by Qing Chen and published by . This book was released on 2021 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hans-Volker Klapdor-Kleingrothaus
Publisher : Springer Science & Business Media
ISBN 13 : 3642557392
Total Pages : 670 pages
Book Rating : 4.6/5 (425 download)
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.
Author : Patrick Phelps
Publisher :
ISBN 13 :
Total Pages : 191 pages
Book Rating : 4.:/5 (892 download)
Download or read book The LUX Dark Matter Experiment written by Patrick Phelps and published by . This book was released on 2014 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dark matter, the mysterious substance that seems to make up most of the mass of the universe, has never been detected in the laboratory. In this document I outline the current world's leading experiment, LUX, to look for a class of dark matter, the Weakly Interacting Massive Particle. I outline the general principles of searching for dark matter through low background detectors and event rejection, I move on to a description of the LUX experiment and its performance, reviewing its internal structure and subsystems including a novel heat exchange system that expedited system readiness and resulted in a stable platform for WIMP searching. The LUX energy reconstruction is then examined, followed by a breakdown of signal fluctuations as a function of energy as part of our understanding of back- ground discrimination in this class of detectors. Finally, I review the first LUX WIMP search result, culminating in the world's most sensitive limit on the spin- independent WIMP-nucleon cross section, before moving to a discussion of next steps in the search for dark matter for LUX and next generational experiments.
