Measurement of the Higgs Boson Decay to Τ-pairs in the Lepton Plus Hadrons Final State in Proton-proton Collisions with the ATLAS Detector
Author: Jessica Kristina Liebal
Publisher:
Published: 2016
Total Pages:
ISBN-13:
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Author: Jessica Kristina Liebal
Publisher:
Published: 2016
Total Pages:
ISBN-13:
DOWNLOAD EBOOKAuthor: Masashi Aiko
Publisher: Springer Nature
Published: 2023-05-20
Total Pages: 268
ISBN-13: 9819913241
DOWNLOAD EBOOKThis book investigates the physics of the discovered Higgs boson and additional Higgs bosons in the extended Higgs models which includes higher-order quantum corrections. While the 125 GeV Higgs boson was discovered, the structure of the Higgs sector is still a mystery. Since the Higgs sector determines the concrete realization of the Higgs mechanism, the study of its nature is one of the central interests in current and future high-energy physics. The book begins with a review of the standard model and the two-Higgs doublet model, which is one of the representatives of the extended Higgs models. Subsequently, we discuss the studies of the two-Higgs doublet model at the lowest order of perturbation. Following the lowest-order analysis, we study the higher-order electroweak corrections in Higgs physics. After reviewing the renormalization procedure and the higher-order corrections in the decays of the discovered Higgs boson, we discuss the higher-order corrections in the Higgs strahlung process from an electron-positron collision, the decays of the additional charged and CP-odd Higgs bosons in the two-Higgs doublet model. From the series of these studies, it is found that the nature of the Higgs sector can be widely investigated by future collider experiments.
Author: Herwig Schopper
Publisher: Springer Nature
Published: 2020
Total Pages: 632
ISBN-13: 3030382079
DOWNLOAD EBOOKThis first open access volume of the handbook series contains articles on the standard model of particle physics, both from the theoretical and experimental perspective. It also covers related topics, such as heavy-ion physics, neutrino physics and searches for new physics beyond the standard model. A joint CERN-Springer initiative, the "Particle Physics Reference Library" provides revised and updated contributions based on previously published material in the well-known Landolt-Boernstein series on particle physics, accelerators and detectors (volumes 21A, B1,B2,C), which took stock of the field approximately one decade ago. Central to this new initiative is publication under full open access
Author: Martin B. Einhorn
Publisher: North Holland
Published: 1991
Total Pages: 408
ISBN-13:
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Author: Eric Drechsler
Publisher:
Published: 2018
Total Pages:
ISBN-13:
DOWNLOAD EBOOKThe couplings of the Standard Model Higgs boson to fermions provide valuable insights into the nature of electroweak symmetry breaking in the Yukawa sector. This thesis summarises the measurement of the Higgs boson production cross section in decays to two hadronically decaying -leptons. The measurement is based on 36.1 fb−1 proton-proton collision data at a centre-of-mass energy of 13 TeV recorded in 2015 and 2016 with the Atlas detector at the Large Hadron Collider. A cut-based and a multivariate analysis approach are investigated, based on the reconstructed mass and boosted decision tree...
Author: Oliver K. Baker
Publisher: BoD – Books on Demand
Published: 2024-04-24
Total Pages: 282
ISBN-13: 0854660836
DOWNLOAD EBOOKThis book is devoted to research topics in quantum entanglement at the energy frontier of particle and nuclear physics, and important interdisciplinary collaborations with colleagues from fields outside of physics. A non-exhaustive list of examples of the latter can include mathematics, computer science, social sciences, philosophy, and how physics can interact with them in a way that supports successful outcomes. These are exciting times in the field of quantum information science, with new research results and their applications in society exhibiting themselves rather frequently. But what is even more exciting is that the frequency of these new results and their applications increases with a rapidity that will motivate new methods, new theories, new experiments, and new collaborations outside of the field that future researchers will find quite challenging.
Author: Aleandro Nisati
Publisher: World Scientific
Published: 2016-08-26
Total Pages: 470
ISBN-13: 981442546X
DOWNLOAD EBOOKThe recent observation of the Higgs boson has been hailed as the scientific discovery of the century and led to the 2013 Nobel Prize in physics. This book describes the detailed science behind the decades-long search for this elusive particle at the Large Electron Positron Collider at CERN and at the Tevatron at Fermilab and its subsequent discovery and characterization at the Large Hadron Collider at CERN. Written by physicists who played leading roles in this epic search and discovery, this book is an authoritative and pedagogical exposition of the portrait of the Higgs boson that has emerged from a large number of experimental measurements. As the first of its kind, this book should be of interest to graduate students and researchers in particle physics.
Author: Daiki Yamaguchi
Publisher: Springer Nature
Published: 2019-10-30
Total Pages: 279
ISBN-13: 9811509328
DOWNLOAD EBOOKThis book reports on the search for a new heavy particle, the Vector-Like Top quark (VLT), in the Large Hadron Collider (LHC) at CERN. The signal process is the pair production of VLT decaying into a Higgs boson and top quark (TT→Ht+X, X=Ht, Wb, Zt). The signal events result in top–antitop quarks final states with additional heavy flavour jets. The book summarises the analysis of the data collected with the ATLAS detector in 2015 and 2016. In order to better differentiate between signals and backgrounds, exclusive taggers of top quark and Higgs boson were developed and optimised for VLT signals. These efforts improved the sensitivity by roughly 30%, compared to the previous analysis. The analysis outcomes yield the strongest constraints on parameter space in various BSM theoretical models. In addition, the book addresses detector operation and the evaluation of tracking performance. These efforts are essential to properly collecting dense events and improving the accuracy of the reconstructed objects that are used for particle identification. As such, they represent a valuable contribution to data analysis in extremely dense environments.
Author: Luciano Maiani
Publisher: World Scientific Publishing Company
Published: 2016-08-25
Total Pages: 483
ISBN-13: 9814733512
DOWNLOAD EBOOKThe book gives a quite complete and up-to-date picture of the Standard Theory with an historical perspective, with a collection of articles written by some of the protagonists of present particle physics. The theoretical developments are described together with the most up-to-date experimental tests, including the discovery of the Higgs Boson and the measurement of its mass as well as the most precise measurements of the top mass, giving the reader a complete description of our present understanding of particle physics.
Author: Lesya Horyn
Publisher: Springer Nature
Published: 2022-02-07
Total Pages: 146
ISBN-13: 3030916723
DOWNLOAD EBOOKThis thesis presents a search for long-lived particles decaying into displaced electrons and/or muons with large impact parameters. This signature provides unique sensitivity to the production of theoretical lepton-partners, sleptons. These particles are a feature of supersymmetric theories, which seek to address unanswered questions in nature. The signature searched for in this thesis is difficult to identify, and in fact, this is the first time it has been probed at the Large Hadron Collider (LHC). It covers a long-standing gap in coverage of possible new physics signatures. This thesis describes the special reconstruction and identification algorithms used to select leptons with large impact parameters and the details of the background estimation. The results are consistent with background, so limits on slepton masses and lifetimes in this model are calculated at 95% CL, drastically improving on the previous best limits from the Large Electron Positron Collider (LEP).