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Search For The Standard Model Higgs Boson Pair Production And New Physics Phenomena In The Bbt Hadt Had Final State With The Atlas Detector
Download Search For The Standard Model Higgs Boson Pair Production And New Physics Phenomena In The Bbt Hadt Had Final State With The Atlas Detector full books in PDF, epub, and Kindle. Read online Search For The Standard Model Higgs Boson Pair Production And New Physics Phenomena In The Bbt Hadt Had Final State With The Atlas Detector ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Search for New Physics in tt ̅ Final States with Additional Heavy-Flavor Jets with the ATLAS Detector by : Javier Montejo Berlingen
Download or read book Search for New Physics in tt ̅ Final States with Additional Heavy-Flavor Jets with the ATLAS Detector written by Javier Montejo Berlingen and published by Springer. This book was released on 2018-05-30 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: This doctoral thesis focuses on the search for new phenomena in top-antitop quark (tt) final states with additional b-quark jets at the LHC. It uses the full Run 1 dataset collected by the ATLAS experiment in proton-proton collisions at √s=8 TeV. The final state of interest consists of an isolated lepton, a neutrino and at least six jets with at least four b-tagged jets, a challenging experimental signature owing to the large background from tt+heavy-flavor production. This final state is characteristic of ttH production, with the Higgs boson decaying into bb, a process that allows direct probing of the top-Higgs Yukawa coupling. This signature is also present in many extensions of the Standard Model that have been proposed as solutions to the hierarchy problem, such as supersymmetry or composite Higgs models, which predict the pair production of bosonic or fermionic top quark partners, or the anomalous production of four-top-quark events. All these physics processes have been searched for using an ambitious search strategy that has been developed on the basis of a combination of state-of-art theoretical predictions and a sophisticated statistical analysis to constrain in-situ the large background uncertainties. As a result, the most restrictive bounds to date on the above physics processes have been obtained.
Book Synopsis Fundamental Parameters in Cosmology by : J. Thanh Van Tran
Download or read book Fundamental Parameters in Cosmology written by J. Thanh Van Tran and published by Atlantica Séguier Frontières. This book was released on 1998 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Searches for Supersymmetric Particles in Final States with Multiple Top and Bottom Quarks with the Atlas Detector by : Chiara Rizzi
Download or read book Searches for Supersymmetric Particles in Final States with Multiple Top and Bottom Quarks with the Atlas Detector written by Chiara Rizzi and published by Springer Nature. This book was released on 2020-09-01 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: This PhD thesis documents two of the highest-profile searches for supersymmetry performed at the ATLAS experiment using up to 80/fb of proton-proton collision data at a center-of-mass energy of 13 TeV delivered by the Large Hadron Collider (LHC) during its Run 2 (2015-2018). The signals of interest feature a high multiplicity of jets originating from the hadronisation of b-quarks and large missing transverse momentum, which constitutes one of the most promising final state signatures for discovery of new phenomena at the LHC. The first search is focused on the strong production of a pair of gluinos, with each gluino decaying into a neutralino and a top-antitop-quark pair or a bottom-antibottom-quark pair. The second search targets the pair production of higgsinos, with each higgsino decaying into a gravitino and a Higgs boson, which in turn is required to decay into a bottom-antibottom-quark pair. Both searches employ state-of-the-art experimental techniques and analysis strategies at the LHC, resulting in some of the most restrictive bounds available to date on the masses of the gluino,neutralino, and higgsino in the context of the models explored.
Book Synopsis Higgs Boson Decays into a Pair of Bottom Quarks by : Cecilia Tosciri
Download or read book Higgs Boson Decays into a Pair of Bottom Quarks written by Cecilia Tosciri and published by Springer Nature. This book was released on 2021-10-22 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: The discovery in 2012 of the Higgs boson at the Large Hadron Collider (LHC) represents a milestone for the Standard Model (SM) of particle physics. Most of the SM Higgs production and decay rates have been measured at the LHC with increased precision. However, despite its experimental success, the SM is known to be only an effective manifestation of a more fundamental description of nature. The scientific research at the LHC is strongly focused on extending the SM by searching, directly or indirectly, for indications of New Physics. The extensive physics program requires increasingly advanced computational and algorithmic techniques. In the last decades, Machine Learning (ML) methods have made a prominent appearance in the field of particle physics, and promise to address many challenges faced by the LHC. This thesis presents the analysis that led to the observation of the SM Higgs boson decay into pairs of bottom quarks. The analysis exploits the production of a Higgs boson associated with a vector boson whose signatures enable efficient triggering and powerful background reduction. The main strategy to maximise the signal sensitivity is based on a multivariate approach. The analysis is performed on a dataset corresponding to a luminosity of 79.8/fb collected by the ATLAS experiment during Run-2 at a centre-of-mass energy of 13 TeV. An excess of events over the expected background is found with an observed (expected) significance of 4.9 (4.3) standard deviation. A combination with results from other \Hbb searches provides an observed (expected) significance of 5.4 (5.5). The corresponding ratio between the signal yield and the SM expectation is 1.01 +- 0.12 (stat.)+ 0.16-0.15(syst.). The 'observation' analysis was further extended to provide a finer interpretation of the V H(H → bb) signal measurement. The cross sections for the VH production times the H → bb branching ratio have been measured in exclusive regions of phase space. These measurements are used to search for possible deviations from the SM with an effective field theory approach, based on anomalous couplings of the Higgs boson. The results of the cross-section measurements, as well as the constraining of the operators that affect the couplings of the Higgs boson to the vector boson and the bottom quarks, have been documented and discussed in this thesis. This thesis also describes a novel technique for the fast simulation of the forward calorimeter response, based on similarity search methods. Such techniques constitute a branch of ML and include clustering and indexing methods that enable quick and efficient searches for vectors similar to each other. The new simulation approach provides optimal results in terms of detector resolution response and reduces the computational requirements of a standard particles simulation.
Author :Anna-Teresa Tymieniecka Publisher :Springer Science & Business Media ISBN 13 :9048197481 Total Pages :310 pages Book Rating :4.0/5 (481 download)
Book Synopsis Astronomy and Civilization in the New Enlightenment by : Anna-Teresa Tymieniecka
Download or read book Astronomy and Civilization in the New Enlightenment written by Anna-Teresa Tymieniecka and published by Springer Science & Business Media. This book was released on 2010-11-18 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume represents the first which interfaces with astronomy as the fulcrum of the sciences. It gives full expression to the human passion for the skies. Advancing human civilization has unfolded and matured this passion into the comprehensive science of astronomy. Advancing science’s quest for the first principles of existence meets the ontopoietic generative logos of life, the focal point of the New Enlightenment. It presents numerous perspectives illustrating how the interplay between human beings and the celestial realm has informed civilizational trends. Scholars and philosophers debate in physics and biology, the findings of which are opening a more inclusive, wider picture of the universe. The different models of the universal order and of life here presented, all aiming at the first principles of existence—accord with the phenomenology/ontopoiesis of life within the logos-prompted primogenital stream of becoming and action, which points to a future of progressing culture.
Book Synopsis A Beauty-ful Boson by : Giulia Di Gregorio
Download or read book A Beauty-ful Boson written by Giulia Di Gregorio and published by Springer Nature. This book was released on 2023-01-01 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: The analysis described in this thesis is the search for the Higgs boson, decaying into bb pair, in the associated production with a vector boson, in the extreme Higgs boson transverse momentum region where the Higgs boson is reconstructed using the large-R jet technique. The use of the large-R jets allows to add a part of the phase space unexplored so far, which is particularly sensitive to possible new physics. The analysed data have been collected at LHC by the ATLAS detector between 2015 and 2018 at a centre-of-mass energy of √s = 13 TeV. The same dataset has been used to perform the differential pp → ZH and pp → WH cross-section measurements used to extract the information on the Higgs couplings and to put limits on Beyond the Standard Model effects. Furthermore the analysis has been re-used to perform a cross-section measurement of the diboson ZZ and WZ processes because the diboson and the Higgs processes have a similar topology. For the first time the ZZ(bb) and WZ(bb) cross-sections are measured at √s = 13 TeV and the observed cross-section measurements are consistent with the Standard Model predictions.
Book Synopsis Grand Atlas de L'astronomie by : Jean Audouze
Download or read book Grand Atlas de L'astronomie written by Jean Audouze and published by . This book was released on 1988 with total page 431 pages. Available in PDF, EPUB and Kindle. Book excerpt: A reference book providing information on planetary science, modern astronomy, astrophysics, and cosmology. Includes over 1,100 charts, diagrams, and illustrations.
Book Synopsis Energy, Complexity and Wealth Maximization by : Robert Ayres
Download or read book Energy, Complexity and Wealth Maximization written by Robert Ayres and published by Springer. This book was released on 2016-07-14 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is about the mechanisms of wealth creation, or what we like to think of as evolutionary "progress." The massive circular flow of goods and services between producers and consumers is not a perpetual motion machine; it has been dependent for the past 150 years on energy inputs from a finite storage of fossil fuels. In this book, you will learn about the three key requirements for wealth creation, and how this process acts according to physical laws, and usually after some part of the natural wealth of the planet has been exploited in an episode of "creative destruction." Knowledge and natural capital, particularly energy, will interact to power the human wealth engine in the future as it has in the past. Will it sputter or continue along the path of evolutionary progress that we have come to expect? Can the new immaterial wealth of information and ideas, which makes up the so-called knowledge economy, replace depleted natural wealth? These questions have no simple answers, but this masterful book will help you to understand the grand challenge of our time. Praise for Energy, Complexity and Wealth Maximization: “... people who run the modern world (politicians, economists and lawyers) have a very poor grasp of how it really works because they do not understand the fundamentals of energy, exergy and entropy ... those decision-makers would greatly benefit from reading this book ...” - Vaclav Smil, Distinguished Professor Emeritus, University of Manitoba “... A grandiose design; impressive, worth reading and reflecting!” - Prof. Dr. Ernst Ulrich von Weizäcker, Founder of Wuppertal Institute; Co-President of the Club of Rome, Former Member of the German Bundestag, co-chair of the UN’s Resource Panel “... The book is a must read for concerned citizens and decision makers across the globe.” - RK Pachauri, Founder and Executive Vice Chairman, The Energy and Resources Institute (TERI) and ex-chair, International Panel on Climate Change (IPCC)
Book Synopsis Massive Neutrinos by : Orrin Fackler
Download or read book Massive Neutrinos written by Orrin Fackler and published by Atlantica Séguier Frontières. This book was released on 1991 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Taming the Atom by : Hans Christian Von Baeyer
Download or read book Taming the Atom written by Hans Christian Von Baeyer and published by Courier Corporation. This book was released on 2000-01-01 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fascinating, accessible study recounts the process of discovery, from atomism of the Greeks to quantum revolutions of the 1920s and the theories and conjectures of today. Topics include components of the atom, quantum mechanics, atomic landscape, atoms in isolation, more. "Lucid and entertaining." — The New York Times Book Review.
Book Synopsis Primordial Cosmology by : Patrick Peter
Download or read book Primordial Cosmology written by Patrick Peter and published by Oxford University Press. This book was released on 2013-02-14 with total page 858 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an extensive survey of all the physics necessary to understand the current developments in the field of fundamental cosmology, as well as an overview of the observational data and methods. It will help students to get into research by providing definitions and main techniques and ideas discussed today. The book is divided into three parts. Part 1 summarises the fundamentals in theoretical physics needed in cosmology (general relativity, field theory, particle physics). Part 2 describes the standard model of cosmology and includes cosmological solutions of Einstein equations, the hot big bang model, cosmological perturbation theory, cosmic microwave background anisotropies, lensing and evidence for dark matter, and inflation. Part 3 describes extensions of this model and opens up current research in the field: scalar-tensor theories, supersymmetry, the cosmological constant problem and acceleration of the universe, topology of the universe, grand unification and baryogenesis, topological defects and phase transitions, string inspired cosmology including branes and the latest developments. The book provides details of all derivations and leads the student up to the level of research articles.
Book Synopsis ATLAS Measurements of the Higgs Boson Coupling to the Top Quark in the Higgs to Diphoton Decay Channel by : Jennet Elizabeth Dickinson
Download or read book ATLAS Measurements of the Higgs Boson Coupling to the Top Quark in the Higgs to Diphoton Decay Channel written by Jennet Elizabeth Dickinson and published by Springer Nature. This book was released on 2021-11-16 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: During Run 2 of the Large Hadron Collider, the ATLAS experiment recorded proton-proton collision events at 13 TeV, the highest energy ever achieved in a collider. Analysis of this dataset has provided new opportunities for precision measurements of the Higgs boson, including its interaction with the top quark. The Higgs-top coupling can be directly probed through the production of a Higgs boson in association with a top-antitop quark pair (ttH). The Higgs to diphoton decay channel is among the most sensitive for ttH measurements due to the excellent diphoton mass resolution of the ATLAS detector and the clean signature of this decay. Event selection criteria were developed using novel Machine Learning techniques to target ttH events, yielding a precise measurement of the ttH cross section in the diphoton channel and a 6.3 $\sigma$ observation of the ttH process in combination with other decay channels, as well as stringent limits on CP violation in the Higgs-top coupling.
Book Synopsis Electroweak Interactions and Unified Theories by : J. Thanh Van Tran
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 Abaddon Ascending written by Thomas Horn and published by Defender. This book was released on 2016-11-15 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "We [plan to open a portal into] an extra dimension. Out of this door might come something...unknown." --Sergio Bertolucci, Director for Research and Scientific Computing at CERNCERN is easily one of the most secretive organizations of our times. With controversy and conspiracy theories abounding, it takes specialized researchers to weed through the lies in order to find the truth. But sometimes, truth is stranger--and far scarier--than fiction. This is where internationally celebrated investigative researcher Dr. Thomas R. Horn and "Into the Multiverse" television host Josh Peck arrive to expose the reality of a plan so nefarious that it involves not only the history of Apollyon-Abaddon, but his near-future fulfillment of biblical prophecy and entrance into the world. Are powerful occultists--from the highest levels of governments, science, and academia to the lowest echelons of modern witchcraft--even now invoking the arrival of this destroyer and his legions from the abyss?!ABADDON ASCENDING WILL SHOCK READERS WITH THE FOLLOWING INCREDIBLE REVELATIONS:*The ancient origin of CERN's modern-day mission*The latest information pertaining to interdimensional portals*The real meaning of the bizarre Gotthard Base Tunnel opening ceremony and how it connects to the return of the "old gods"*Who the "horned god" is, fertility rites of the triple goddess, and how this connects to CERN*CERN's beastly logo and destroyer god imagery*CERN's role in the formation of a new Babylonian single language system*Exactly how the Large Hadron Collider at CERN operates, and what it is trying to find*The mind-bending reality of quantum field theory*Eye-opening interviews with such personalities as physicist Don Page, who works with Dr. Stephen Hawking*The doomsday scenario involving the Higgs field that scientists don't want you to know*The future manipulation of human consciousness through an A.I. beast at CERN*The connection between Ezekiel's vision and the locusts of Revelation 9*The coming holy war between the Titans and the one, true, living God!
Book Synopsis Nuclear Weapons and the Threat of Nuclear War by : John B. Harris
Download or read book Nuclear Weapons and the Threat of Nuclear War written by John B. Harris and published by Houghton Mifflin Harcourt P. This book was released on 1986 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for New Physics in Mono-jet Final States in pp Collisions by : Giuliano Gustavino
Download or read book Search for New Physics in Mono-jet Final States in pp Collisions written by Giuliano Gustavino and published by Springer. This book was released on 2017-06-19 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis provides a detailed and comprehensive description of the search for New Physics at the Large Hadron Collider (LHC) in the mono-jet final state, using the first 3.2 fb-1 of data collected at the centre of mass energy of colliding protons of 13~TeV recorded in the ATLAS experiment at LHC. The results are interpreted as limits in different theoretical contexts such as compressed supersymmetric models, theories that foresee extra-spatial dimensions and in the dark matter scenario. In the latter the limits are then compared with those obtained by other ATLAS analyses and by experiments based on completely different experimental techniques, highlighting the role of the mono-jet results in the context of dark matter searches.Lastly, a set of possible analysis improvements are proposed to reduce the main uncertainties that affect the signal region and to increase the discovery potential by further exploiting the information on the final state.
Book Synopsis Studies in Nuclear Physics by : Fizicheskiĭ institut imeni P.N. Lebedeva
Download or read book Studies in Nuclear Physics written by Fizicheskiĭ institut imeni P.N. Lebedeva and published by . This book was released on 1969 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt:
