Search For The Standard Model Higgs Boson In The Wh To Ell Nu Bbarb Channel In 196 Tev Proton Antiproton Collisions

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Cracking the Quantum Code of the Universe

Author : John Moffat
Publisher : Oxford University Press
ISBN 13 : 0199915520
Total Pages : 257 pages
Book Rating : 4.1/5 (999 download)

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Book Synopsis Cracking the Quantum Code of the Universe by : John Moffat

Download or read book Cracking the Quantum Code of the Universe written by John Moffat and published by Oxford University Press. This book was released on 2014-02 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: If the new boson is indeed the Higgs particle, its discovery represents an important milestone in the history of particle physics. However, despite the pressure to award Nobel Prizes to physicists associated with the Higgs boson, John Moffat argues that there still remain important data analyses to be performed before uncorking the champagne. John Moffat is Professor Emeritus of Physics at the University of Toronto and a senior researcher at the Perimeter Institute for Theoretical Physics. Well-known for his outside-the-box research on topics such as dark matter, dark energy, and the varying speed of light cosmology (VSL), his new book takes a critical look at the hype surrounding the Higgs boson. In the process, he presents a cogent and often entertaining history of particle physics and an exploration of alternative theories of particle physics that do not feature the Higgs boson, including his own. He gives a detailed and personal description of how theoretical physicists come up with new theories, and emphasizes how carefully experimental physicists must interpret the complex data now coming out of accelerators like the Large Hadron Collider (LHC). The book does not shy away from controversial topics such as the sociology of particle physics. There is immense pressure on projects like the $9 billion LHC to come up with positive results in order to secure funding for the future. Yet to date, the Higgs boson may be the only positive result to emerge from the LHC experiments. The searches for dark matter particles, mini-black holes, extra dimensions, and supersymmetric particles have all come up empty-handed, with serious consequences for theoretical physics, including string theory and gravity theory. John Moffat is also the author of Reinventing Gravity (2008) and Einstein Wrote Back (2010).

Physics at the Terascale

Author : Ian Brock
Publisher : John Wiley & Sons
ISBN 13 : 3527634975
Total Pages : 437 pages
Book Rating : 4.5/5 (276 download)

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Book Synopsis Physics at the Terascale by : Ian Brock

Download or read book Physics at the Terascale written by Ian Brock and published by John Wiley & Sons. This book was released on 2011-05-04 with total page 437 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by authors working at the forefront of research, this accessible treatment presents the current status of the field of collider-based particle physics at the highest energies available, as well as recent results and experimental techniques. It is clearly divided into three sections; The first covers the physics -- discussing the various aspects of the Standard Model as well as its extensions, explaining important experimental results and highlighting the expectations from the Large Hadron Collider (LHC). The second is dedicated to the involved technologies and detector concepts, and the third covers the important - but often neglected - topics of the organisation and financing of high-energy physics research. A useful resource for students and researchers from high-energy physics.

Beyond the Nanoworld

Author : H. G. Dosch
Publisher : CRC Press
ISBN 13 : 1439865213
Total Pages : 292 pages
Book Rating : 4.4/5 (398 download)

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Book Synopsis Beyond the Nanoworld by : H. G. Dosch

Download or read book Beyond the Nanoworld written by H. G. Dosch and published by CRC Press. This book was released on 2008-01-11 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: Beyond the world of atoms, at scales smaller than the smallest nuclei, a new world comes into view, populated by an array of colorful elementary particles: strange and charmed quarks, muons and neutrinos, gluons and photons, and many others, all interacting in beautifully intricate patterns. Beyond the Nanoworld tells the story of how this new real

Trends in the Draw of Americans to Foreign Terrorist Organizations from 9/11 to Today

Author : Heather J. Williams
Publisher : Rand Corporation
ISBN 13 : 1977401384
Total Pages : 97 pages
Book Rating : 4.9/5 (774 download)

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Book Synopsis Trends in the Draw of Americans to Foreign Terrorist Organizations from 9/11 to Today by : Heather J. Williams

Download or read book Trends in the Draw of Americans to Foreign Terrorist Organizations from 9/11 to Today written by Heather J. Williams and published by Rand Corporation. This book was released on 2018-12-27 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Islamic State of Iraq and the Levant (ISIL) has recently been more successful than al Qaeda in gaining U.S. terrorist recruits. The authors undertake a demographic profile of individuals drawn to foreign terrorist organizations and find that the affiliates average terrorists recruited by ISIL is younger, less educated, and more likely to be African American/black or Caucasian/white and a U.S.-born citizen.

Die Weltmaschine

Author : Rolf-Dieter Heuer
Publisher :
ISBN 13 : 9783901753282
Total Pages : 0 pages
Book Rating : 4.7/5 (532 download)

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Book Synopsis Die Weltmaschine by : Rolf-Dieter Heuer

Download or read book Die Weltmaschine written by Rolf-Dieter Heuer and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 4 July 2012 - Scientific sensation: Higgs boson found! Extraordinary pictures are interspersed with texts about the machine that made this discovery possible the Large Hadron Collider. ,

Introduction to Spintronics

Author : Evelyn Radford
Publisher : Larsen and Keller Education
ISBN 13 : 9781641721028
Total Pages : 226 pages
Book Rating : 4.7/5 (21 download)

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Book Synopsis Introduction to Spintronics by : Evelyn Radford

Download or read book Introduction to Spintronics written by Evelyn Radford and published by Larsen and Keller Education. This book was released on 2019-06-10 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spintronics refers to the study of the intrinsic spin of the electron and its associated magnetic moment. It has potential applications in the area of data storage and transfer. Spintronic systems are prominently present in dilute magnetic semiconductors (DMS) and Heusler alloys. Some metal-based spintronic devices are tunnel magnetoresistance, spin-transfer torque and spin-wave logic devices. Non-volatile spin-logic devices that enable scaling are being widely studied. Spin-transfer and torque-based logic devices that use spins and magnets for information processes are also being developed. This book provides comprehensive insights into the field of spintronics. Such selected concepts that redefine this field have been presented herein. Coherent flow of topics, student-friendly language and extensive use of examples make this textbook an invaluable source of knowledge.

Nanofabrication

Author : Maria Stepanova
Publisher : Springer Science & Business Media
ISBN 13 : 3709104246
Total Pages : 344 pages
Book Rating : 4.7/5 (91 download)

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Book Synopsis Nanofabrication by : Maria Stepanova

Download or read book Nanofabrication written by Maria Stepanova and published by Springer Science & Business Media. This book was released on 2011-11-08 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intended to update scientists and engineers on the current state of the art in a variety of key techniques used extensively in the fabrication of structures at the nanoscale. The present work covers the essential technologies for creating sub 25 nm features lithographically, depositing layers with nanometer control, and etching patterns and structures at the nanoscale. A distinguishing feature of this book is a focus not on extension of microelectronics fabrication, but rather on techniques applicable for building NEMS, biosensors, nanomaterials, photonic crystals, and other novel devices and structures that will revolutionize society in the coming years.

Cosmic Gamma-Ray Sources

Author : Ka Lok Cheng
Publisher : Springer Science & Business Media
ISBN 13 : 9781402022555
Total Pages : 428 pages
Book Rating : 4.0/5 (225 download)

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Book Synopsis Cosmic Gamma-Ray Sources by : Ka Lok Cheng

Download or read book Cosmic Gamma-Ray Sources written by Ka Lok Cheng and published by Springer Science & Business Media. This book was released on 2004-10-25 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gamma-ray astronomy has undergone an enormous progress in the last 15 years. The success of satellite experiments like NASA's Comp ton Gamma-Ray Observatory and ESA's INTEGRAL mission, as well as of ground-based instruments have open new views into the high-energy Universe. Different classes of cosmic gamma-ray sources have been now detected at different energies, in addition to young radio pulsars and gamma-ray bursts, the classical ones. The new sources include radio quiet pulsars, microquasars, supernova remnants, starburst galaxies, ra dio galaxies, flat-spectrum radio quasars, and BL Lacertae objects. A large number of unidentified sources strongly suggests that this brief enumeration is far from complete. Gamma-ray bursts are now estab lished as extragalactic sources with tremendous energy output. There is accumulating evidence supporting the idea that massive stars and star forming regions can accelerate charged particles up to relativistic ener gies making them gamma-ray sources. Gamma-ray astronomy has also proved to be a powerful tool for cosmology imposing constraints to the background photon fields that can absorb the gamma-ray flux from dis tant sources. All this has profound implications for our current ideas about how particles are accelerated and transported in both the local and distant U niverse. The evolution of our knowledge on the gamma-ray sky has been so fast that is not easy for the non-specialist scientist and the graduate student to be aware of the full potential of this field or to grasp the fundamentals of a given topic in order to attempt some original contribution.

Search for the Standard Model Higgs Boson in the H → ZZ → l + l - qq Decay Channel at CMS

Author : Francesco Pandolfi
Publisher : Springer Science & Business Media
ISBN 13 : 3319009036
Total Pages : 137 pages
Book Rating : 4.3/5 (19 download)

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Book Synopsis Search for the Standard Model Higgs Boson in the H → ZZ → l + l - qq Decay Channel at CMS by : Francesco Pandolfi

Download or read book Search for the Standard Model Higgs Boson in the H → ZZ → l + l - qq Decay Channel at CMS written by Francesco Pandolfi and published by Springer Science & Business Media. This book was released on 2013-08-15 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: The theoretical foundations of the Standard Model of elementary particles relies on the existence of the Higgs boson, a particle which has been revealed for the first time by the experiments run at the Large Hadron Collider (LHC) in 2012. As the Higgs boson is an unstable particle, its search strategies were based on its decay products. In this thesis, Francesco Pandolfi conducted a search for the Higgs boson in the H → ZZ → l + l - qq Decay Channel with 4.6 fb -1 of 7 TeV proton-proton collision data collected by the Compact Muon Solenoid (CMS) experiment. The presence of jets in the final state poses a series of challenges to the experimenter: both from a technical point of view, as jets are complex objects and necessitate of ad-hoc reconstruction techniques, and from an analytical one, as backgrounds with jets are copious at hadron colliders, therefore analyses must obtain high degrees of background rejection in order to achieve competitive sensitivity. This is accomplished by following two directives: the use of an angular likelihood discriminant, capable of discriminating events likely to originate from the decay of a scalar boson from non-resonant backgrounds, and by using jet parton flavor tagging, selecting jets compatible with quark hadronization and discarding jets more likely to be initiated by gluons. The events passing the selection requirements in 4.6 fb -1 of data collected by the CMS detector are examined, in the search of a possible signal compatible with the decay of a heavy Higgs boson. The thesis describes the statistical tools and the results of this analysis. This work is a paradigm for studies of the Higgs boson with final states with jets. The non-expert physicists will enjoy a complete and eminently readable description of a proton-proton collider analysis. At the same time, the expert reader will learn the details of the searches done with jets at CMS.

Search for the Higgs Boson in the Vector Boson Fusion Channel at the ATLAS Detector

Author : Eric Ouellette
Publisher : Springer
ISBN 13 : 3319135996
Total Pages : 114 pages
Book Rating : 4.3/5 (191 download)

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Book Synopsis Search for the Higgs Boson in the Vector Boson Fusion Channel at the ATLAS Detector by : Eric Ouellette

Download or read book Search for the Higgs Boson in the Vector Boson Fusion Channel at the ATLAS Detector written by Eric Ouellette and published by Springer. This book was released on 2015-01-20 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Thesis describes the first measurement of, and constraints on, Higgs boson production in the vector boson fusion mode, where the Higgs decays to b quarks (the most common decay channel), at the LHC. The vector boson fusion mode, in which the Higgs is produced simultaneously with a pair of quark jets, provides an unparalleled opportunity to study the detailed properties of the Higgs, including the possibility of parity and CP violation, as well as its couplings and mass. It thus opens up this new field of study for precision investigation as the LHC increases in energy and intensity, leading the way to this new and exciting arena of precision Higgs research.

SALT II Agreement

Author : United States. Department of State. Bureau of Public Affairs
Publisher :
ISBN 13 :
Total Pages : 60 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis SALT II Agreement by : United States. Department of State. Bureau of Public Affairs

Download or read book SALT II Agreement written by United States. Department of State. Bureau of Public Affairs and published by . This book was released on 1979 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Physics and Probability

Author : W. T. Grandy, Jr
Publisher : Cambridge University Press
ISBN 13 : 9780521617109
Total Pages : 296 pages
Book Rating : 4.6/5 (171 download)

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Book Synopsis Physics and Probability by : W. T. Grandy, Jr

Download or read book Physics and Probability written by W. T. Grandy, Jr and published by Cambridge University Press. This book was released on 2004-12-16 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: The pioneering work of Edwin T. Jaynes in the field of statistical physics, quantum optics, and probability theory has had a significant and lasting effect on the study of many physical problems, ranging from fundamental theoretical questions through to practical applications such as optical image restoration. Physics and Probability is a collection of papers in these areas by some of his many colleagues and former students, based largely on lectures given at a symposium celebrating Jaynes' contributions, on the occasion of his seventieth birthday and retirement as Wayman Crow Professor of Physics at Washington University. The collection contains several authoritative overviews of current research on maximum entropy and quantum optics, where Jaynes' work has been particularly influential, as well as reports on a number of related topics. In the concluding paper, Jaynes looks back over his career, and gives encouragement and sound advice to young scientists. All those engaged in research on any of the topics discussed in these papers will find this a useful and fascinating collection, and a fitting tribute to an outstanding and innovative scientist.

The Standard Theory of Particle Physics

Author : Luciano Maiani
Publisher : World Scientific Publishing Company
ISBN 13 : 9814733512
Total Pages : 483 pages
Book Rating : 4.8/5 (147 download)

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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.

Search for the Standard Model Higgs Boson in the H ZZ L + L - Qq Decay Channel at CMS

Author : Francesco Pandolfi
Publisher :
ISBN 13 : 9783319009049
Total Pages : 146 pages
Book Rating : 4.0/5 (9 download)

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Book Synopsis Search for the Standard Model Higgs Boson in the H ZZ L + L - Qq Decay Channel at CMS by : Francesco Pandolfi

Download or read book Search for the Standard Model Higgs Boson in the H ZZ L + L - Qq Decay Channel at CMS written by Francesco Pandolfi and published by . This book was released on 2013-09-30 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Search for the Higgs Boson

Author : John V. Lee
Publisher : Nova Publishers
ISBN 13 : 9781594548611
Total Pages : 158 pages
Book Rating : 4.5/5 (486 download)

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Book Synopsis Search for the Higgs Boson by : John V. Lee

Download or read book Search for the Higgs Boson written by John V. Lee and published by Nova Publishers. This book was released on 2006 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Higgs boson is an undiscovered elementary particle, thought to be a vital piece of the closely fitting jigsaw of particle physics. Like all particles, it has wave properties akin to those ripples on the surface of a pond which has been disturbed; indeed, only when the ripples travel as a well defined group is it sensible to speak of a particle at all. In quantum language the analogue of the water surface which carries the waves is called a field. Each type of particle has its own corresponding field. The Higgs field is a particularly simple one -- it has the same properties viewed from every direction, and in important respects in indistinguishable from empty space. Thus physicists conceive of the Higgs field being "switched on", pervading all of space and endowing it with "grain" like that of a plank of wood. The direction of the grain in undetectable, and only becomes important once the Higgs' interactions with other particles are taken into account. for instance, particles call vector bosons can travel with the grain, in which case they move easily for large distances and may be observed as photons - that is, particles of light that we can see or record using a camera; or against, in which case their effective range is much shorter, and we call them W or Z particles. These play a central role in the physics of nuclear reactions, such as those occurring in the core of the sun. The Higgs field enables us to view these apparently unrelated phenomenon as two sides of the same coin; both may be described in terms of the properties of the same vector bosons. When particles of matter such as electrons or quarks (elementary constituents of protons and neutrons, which in turn constitute the atomic nucleus) travel through the grain, they are constantly flipped "head-over-heels". this forces them to move more slowly than their natural speed, that of light, by making them heavy.

Integrated Microsystems

Author : Krzysztof Iniewski
Publisher : CRC Press
ISBN 13 : 1439836205
Total Pages : 762 pages
Book Rating : 4.4/5 (398 download)

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Book Synopsis Integrated Microsystems by : Krzysztof Iniewski

Download or read book Integrated Microsystems written by Krzysztof Iniewski and published by CRC Press. This book was released on 2011-10-11 with total page 762 pages. Available in PDF, EPUB and Kindle. Book excerpt: As rapid technological developments occur in electronics, photonics, mechanics, chemistry, and biology, the demand for portable, lightweight integrated microsystems is relentless. These devices are getting exponentially smaller, increasingly used in everything from video games, hearing aids, and pacemakers to more intricate biomedical engineering and military applications. Edited by Kris Iniewski, a revolutionary in the field of advanced semiconductor materials, Integrated Microsystems: Electronics, Photonics, and Biotechnology focuses on techniques for optimized design and fabrication of these intelligent miniaturized devices and systems. Composed of contributions from experts in academia and industry around the world, this reference covers processes compatible with CMOS integrated circuits, which combine computation, communications, sensing, and actuation capabilities. Light on math and physics, with a greater emphasis on microsystem design and configuration and electrical engineering, this book is organized in three sections—Microelectronics and Biosystems, Photonics and Imaging, and Biotechnology and MEMs. It addresses key topics, including physical and chemical sensing, imaging, smart actuation, and data fusion and management. Using tables, figures, and equations to help illustrate concepts, contributors examine and explain the potential of emerging applications for areas including biology, nanotechnology, micro-electromechanical systems (MEMS), microfluidics, and photonics.

Search for the Higgs Boson Produced in Association with Top Quarks with the CMS Detector at the LHC

Author : Cristina Martin Perez
Publisher : Springer Nature
ISBN 13 : 3030902064
Total Pages : 291 pages
Book Rating : 4.0/5 (39 download)

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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.