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Searches For New Particles Produced In Z Boson Decay
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Book Synopsis 60 Years Of Cern Experiments And Discoveries by : Herwig Schopper
Download or read book 60 Years Of Cern Experiments And Discoveries written by Herwig Schopper and published by World Scientific. This book was released on 2015-07-13 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is a compilation of the most important experimental results achieved during the past 60 years at CERN - from the mid-1950s to the latest discovery of the Higgs particle. Covering the results from the early accelerators at CERN to those most recent at the LHC, the contents provide an excellent review of the achievements of this outstanding laboratory. Not only presented is the impressive scientific progress achieved during the past six decades, but also demonstrated is the special way in which successful international collaboration exists at CERN.
Book Synopsis The Large Hadron Collider by : Don Lincoln
Download or read book The Large Hadron Collider written by Don Lincoln and published by JHU Press. This book was released on 2014-10 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lincoln, a senior scientist at Fermi National Accelerator Laboratory and adjunct professor of physics at Notre Dame, gives readers an insider's view of the Hadron Collider from its conception, through its early discoveries and difficulties, to its greatest triumph, the discovery of the Higgs boson.
Book Synopsis The God Particle by : Leon M. Lederman
Download or read book The God Particle written by Leon M. Lederman and published by Houghton Mifflin Harcourt. This book was released on 2006 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: A fascinating tour of particle physics from Nobel Prize winner Leon Lederman. At the root of particle physics is an invincible sense of curiosity. Leon Lederman embraces this spirit of inquiry as he moves from the Greeks' earliest scientific observations to Einstein and beyond to chart this unique arm of scientific study. His survey concludes with the Higgs boson, nicknamed the God Particle, which scientists hypothesize will help unlock the last secrets of the subatomic universe, quarks and all--it's the dogged pursuit of this almost mystical entity that inspires Lederman's witty and accessible history.
Book Synopsis Status Of Theoretical Understanding And Of Experimental Power For Lhc Physics And Beyond - 50th Anniversary Celebration Of The Quark - Proceedings Of The International School Of Subnuclear Physics by : Antonino Zichichi
Download or read book Status Of Theoretical Understanding And Of Experimental Power For Lhc Physics And Beyond - 50th Anniversary Celebration Of The Quark - Proceedings Of The International School Of Subnuclear Physics written by Antonino Zichichi and published by World Scientific. This book was released on 2016-11-01 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the International School of Subnuclear Physics, ISSP 2014, 52nd Course, ERICE, Erice, 24 June - 3 July 2014.
Book Synopsis Particle Physics Reference Library by : Herwig Schopper
Download or read book Particle Physics Reference Library written by Herwig Schopper and published by Springer Nature. This book was released on 2020 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 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
Book Synopsis Discovery Of The Higgs Boson by : Aleandro Nisati
Download or read book Discovery Of The Higgs Boson written by Aleandro Nisati and published by World Scientific. This book was released on 2016-08-26 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 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.
Book Synopsis Rice Meeting, The - Proceedings Of The 1990 Meeting Of The Division Of Particles And Fields Of The Aps (In 2 Volumes) by : Billy E Bonner
Download or read book Rice Meeting, The - Proceedings Of The 1990 Meeting Of The Division Of Particles And Fields Of The Aps (In 2 Volumes) written by Billy E Bonner and published by World Scientific. This book was released on 1990-11-19 with total page 1140 pages. Available in PDF, EPUB and Kindle. Book excerpt: DPF 90 at Rice University was planned as a major conference of truly international character which reviews recent developments in all areas of particle physics. Plenary session topics include new results from SLC, LEP, pp colliders, Heavy Quark Physics, High Energy Astrophysics. Two-day mini-conferences were held on the following subjects: Electroweak Physics, QCD and Hadron Physics, Theory Beyond the Standard Model, Non-accelerator Physics.
Book Synopsis The Most Unexpected at LHC and the Status of High Energy Frontier by : Antonino Zichichi
Download or read book The Most Unexpected at LHC and the Status of High Energy Frontier written by Antonino Zichichi and published by World Scientific. This book was released on 2012 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hot Theoretical Topics: Ultraviolet Behavior of N=8 Supergravity (L J Dixon); Is the Best Superstring Model NP Complete? (M R Douglas); Erice Lecture on Microscopic Gravity (G Dvali); Supergravity: Foundations and Applications (S Ferrara); Orienfold String Vacua and Strings at the LHC (D Luest); Seminar on Specialized Topics: Status of Dark Matter and Neutrino Physics (A Bettini); Experimental Evidence for Pointlike Baryons at q2 = 4MB2 (S Pacetti); Neutrino Masses, Dark Matter, Baryon Asymmetry and Inflation can be Explained at Once (M Shaposhnikov); Results from RHIC with Implications for LHC (M J Tannenbaum); Quantum Gravity without Space-Time Singularities or Horizons (G 't Hooft); Diffraction in Deep Inelastic Electron Proton Scattering at HERA (G Wolf); The Lesson Needed for the Future (A Zichichi); Highlights from Laboratories: Highlights from RHIC (P R Sorensen); The LHC and Beyond — The Energy Frontier (R D Heuer); Highlights from the Gran Sasso Underground Laboratory (E Coccia); Highlights from Fermilab (S J Parke); Special Sessions for New Talents: Radiation Damage Studies for Silicon Sensors for the XFEL (H Perrey); Notes on Chern–Simons Theory in the Temporal Gauge (A Smirnov); Dark Matter via Many Copies of the Standard Model (A Vikman).
Book Synopsis Most Unexpected At Lhc And The Status Of High Energy Frontier, The - Proceedings Of The International School Of Subnuclear Physics by : Antonino Zichichi
Download or read book Most Unexpected At Lhc And The Status Of High Energy Frontier, The - Proceedings Of The International School Of Subnuclear Physics written by Antonino Zichichi and published by World Scientific. This book was released on 2011-12-28 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents:Hot Theoretical Topics:Ultraviolet Behavior of N = 8 Supergravity (L J Dixon)Is the Best Superstring Model NP Complete? (M R Douglas)Erice Lecture on Microscopic Gravity (G Dvali) Supergravity: Foundations and Applications (S Ferrara)Orienfold String Vacua and Strings at the LHC (D Luest)Seminars on Specialized Topics:Status of Dark Matter and Neutrino Physics (A Bettini)Experimental Evidence for Pointlike Baryons at q2 = 4MB2 (S Pacetti) Neutrino Masses, Dark Matter, Baryon Asymmetry and Inflation can be Explained at Once (M Shaposhnikov)Results from RHIC with Implications for LHC (M J Tannenbaum)Quantum Gravity without Space-Time Singularities or Horizons (G 't Hooft)Diffraction in Deep Inelastic Electron Proton Scattering at HERA (G Wolf)The Lesson Needed for the Future (A Zichichi)Highlights from Laboratories:Highlights from Relativistic Heavy Ion Collider (P R Sorensen)The LHC and Beyond — The Energy Frontier (R D Heuer)Highlights from the Gran Sasso Underground Laboratory (E Coccia)Highlights from Fermilab (S J Parke)Special Sessions for New Talents:Radiation Damage Studies for Silicon Sensors for the XFEL (H Perrey)Notes on Chern–Simons Theory in the Temporal Gauge (A Smirnov)Dark Matter via Many Copies of the Standard Model (A Vikman) Readership: Students, researchers and academics in the field of subnuclear physics. Keywords:Black Holes;QCD;SUSY;QED;Collider;Attractors
Book Synopsis Search For New Elementary Particles, The: Status And Prospect - Proceedings Of The Trieste Workshop by : Martin Lewis Perl
Download or read book Search For New Elementary Particles, The: Status And Prospect - Proceedings Of The Trieste Workshop written by Martin Lewis Perl and published by World Scientific. This book was released on 1993-06-14 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt: It has been more than a decade since new elementary particles were discovered. To recognize the findings of scientists in this still fairly new but exciting and promising area of research, the Trieste Workshop was organised in May 1992 to discuss the status and explore the prospects for the discovery of new elementary particles using the full variety of search methods which are, or will be available to the physicist. All papers in this collection of proceedings are reviews written by experts in their own area of speciality. Many review papers based on experimental findings are also included. To present a clearer and more coherent overview, a theoretical overview talk as well as a summary talk have been included to serve as a link between the various areas that were discussed in the papers. This collection of papers is perhaps the first authoritative source ever published on the search for new elementary particles.
Book Synopsis The Standard Theory of Particle Physics by : Luciano Maiani
Download or read book The Standard Theory of Particle Physics written by Luciano Maiani and published by World Scientific Publishing Company. This book was released on 2016-08-25 with total page 483 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 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.
Book Synopsis Search for the Higgs Boson Produced in Association with Top Quarks with the CMS Detector at the LHC by : Cristina Martin Perez
Download or read book Search for the Higgs Boson Produced in Association with Top Quarks with the CMS Detector at the LHC written by Cristina Martin Perez and published by Springer Nature. This book was released on 2022-02-09 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work, the interaction between the Higgs boson and the top quark is studied with the proton-proton collisions at 13 TeV provided by the LHC at the CMS detector at CERN (Geneva). At the LHC, these particles are produced simultaneously via the associate production of the Higgs boson with one top quark (tH process) or two top quarks (ttH process). Compared to many other possible outcomes of the proton-proton interactions, these processes are very rare, as the top quark and the Higgs boson are the heaviest elementary particles known. Hence, identifying them constitutes a significant experimental challenge. A high particle selection efficiency in the CMS detector is therefore crucial. At the core of this selection stands the Level-1 (L1) trigger system, a system that filters collision events to retain only those with potential interest for physics analysis. The selection of hadronically decaying τ leptons, expected from the Higgs boson decays, is especially demanding due to the large background arising from the QCD interactions. The first part of this thesis presents the optimization of the L1 τ algorithm in Run 2 (2016-2018) and Run 3 (2022-2024) of the LHC. It includes the development of a novel trigger concept for the High-Luminosity LHC, foreseen to start in 2027 and to deliver 5 times the current instantaneous luminosity. To this end, sophisticated algorithms based on machine learning approaches are used, facilitated by the increasingly modern technology and powerful computation of the trigger system. The second part of the work presents the search of the tH and ttH processes with the subsequent decays of the Higgs boson to pairs of τ lepton, W bosons or Z bosons, making use of the data recorded during Run 2. The presence of multiple particles in the final state, along with the low cross section of the processes, makes the search an ideal use case for multivariant discriminants that enhance the selectivity of the signals and reject the overwhelming background contributions. The discriminants presented are built using state-of-the-art machine learning techniques, able to capture the correlations amongst the processes involved, as well as the so-called Matrix Element Method (MEM), which combines the theoretical description of the processes with the detector resolution effects. The level of sophistication of the methods used, along with the unprecedented amount of collision data analyzed, result in the most stringent measurements of the tH and ttH cross sections up to date.
Book Synopsis A Search for Exotic Higgs Decays by : Jackson Burzynski
Download or read book A Search for Exotic Higgs Decays written by Jackson Burzynski and published by Springer Nature. This book was released on 2023-05-23 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: The absence of new physics at the TeV scale observed thus far at the Large Hadron Collider (LHC) motivates an increasing focus on searches for weakly-coupled new particles and exotic signatures. In particular, particles with macroscopic mean proper lifetimes, known as long-lived particles (LLPs), are of significant interest due to their ability to elude the majority of searches which rely on the assumption that Beyond Standard Model particles decay close to the primary interaction point. Many models which aim to solve various issues with the Standard Model (SM) introduce new particles with lifetimes that are either unconstrained, or even shown to prefer the macroscopic regime. These theories often point to the Higgs boson as a possible portal to new physics, with exotic Higgs decays being the primary phenomenological consequence and means of discovery. It is well motivated both from theory and experimental constraints to consider the scenario in which the particles produced in these exotic decays have macroscopic proper lifetimes and give rise to unique detector signatures. This work describes a search for exotic decays of the Higgs boson to two long-lived, neutral, spin-0 particles which subsequently decay to pairs of b quarks, giving the striking signature of displaced hadronic jets in the ATLAS inner detector. Several other ATLAS searches have probed this decay topology previously, excluding branching ratios of the Higgs boson to LLPs of more than 10% for proper lifetimes greater than 100mm. These searches relied on dedicated triggers designed to select events with LLPs decaying in the ATLAS calorimeter or muon spectrometer. The lack of an equivalent trigger for LLP decays in the ATLAS inner detector has been a limiting factor in probing LLP lifetimes less than 100mm. To circumvent the difficulty of triggering on LLP decays, the search presented in this thesis exploits the ZH associated production mode, relying on leptonic trigger signatures to select interesting events. This is the first search for Higgs boson decays into LLPs to exploit this analysis methodology and additionally makes use of several novel methods for both background rejection and background estimation. No excess over Standard Model predictions is observed, and upper limits are set on the branching ratio of the Higgs boson to LLPs . Depending on the mass of the LLP, branching ratios greater than 10% are excluded for lifetimes as small as 4mm and as large as 100mm, probing an important gap in the ATLAS exotic Higgs decay programme. In comparison to the previous searches for Higgs decays to LLPs, these are among the most stringent limits placed on this scenario, and for LLPs with masses below 40 GeV these results represent the strongest existing constraints on the branching ratio of the Higgs boson to LLPs in this lifetime regime.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1988 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Search and Discovery of the Higgs Boson by : Luis Roberto Flores Castillo
Download or read book The Search and Discovery of the Higgs Boson written by Luis Roberto Flores Castillo and published by Morgan & Claypool Publishers. This book was released on 2016-01-01 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a general description of the search for and discovery of the Higgs boson (particle) at CERN’s Large Hadron Collider. The goal is to provide a relatively brief overview of the issues, instruments and techniques relevant for this search; written by a physicist who was directly involved. The Higgs boson mat be the one particle that was studied the most before its discovery and the story from postulation in 1964 to detection in 2012 is a fascinating one. The story is told here while detailing the fundamentals of particle physics.
Book Synopsis Future Of The Large Hadron Collider, The: A Super-accelerator With Multiple Possible Lives by : Oliver Bruning
Download or read book Future Of The Large Hadron Collider, The: A Super-accelerator With Multiple Possible Lives written by Oliver Bruning and published by World Scientific. This book was released on 2023-08-08 with total page 455 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Large Hadron Collider (LHC) is the highest energy collider ever built. It resides near Geneva in a tunnel 3.8m wide, with a circumference of 26.7km, which was excavated in 1983-1988 to initially house the electron-positron collider LEP. The LHC was approved in 1995, and it took until 2010 for reliable operation. By now, a larger set of larger integrated luminosities have been accumulated for physics analyses in the four collider experiments: ATLAS, CMS, LHCb and ALICE.The LHC operates with an extended cryogenic plant, using a multi-stage injection system comprising the PS and SPS accelerators (still in use for particle physics experiments at lower energies). The beams are guided by 1232 superconducting high field dipole magnets.Intense works are underway in preparation of the High Luminosity LHC, aimed at upgrading the LHC and detectors for collecting ten times more luminosity, and extending the collider life to the early 2040's. So far, the (HL-)LHC project represents a cumulation of around one hundred thousand person-years of innovative work by technicians, engineers, and physicists from all over the world; probably the largest scientific effort ever in the history of humanity. The book is driven by the realisation of the unique value of this accelerator complex and by the recognition of the status of high energy physics, described by a Standard Model — which still leaves too many questions unanswered to be the appropriate theory of elementary particles and their interactions.Following the Introduction are: three chapters which focus on the initial decade of operation, leading to the celebrated discovery of the Higgs Boson, on the techniques and physics of the luminosity upgrade, and finally on major options - of using the LHC in a concurrent, power economic, electron-hadron scattering mode, when upgraded to higher energies or eventually as an injector for the next big machine. The various technical and physics chapters, provided by 61 authors, characterise the fascinating opportunities the LHC offers for the next two decades ahead (possibly longer), with the goal to substantially advance our understanding of nature.
