First Measurement Of Hadronic Event Shapes In Pp Collisions At Sqrt S
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First Measurement Of Hadronic Event Shapes In Pp Collisions At Sqrt S
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Author :
language : en
Publisher:
Release Date : 2011
First Measurement Of Hadronic Event Shapes In Pp Collisions At Sqrt S written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
Hadronic event shapes have been measured in proton-proton collisions at sqrt(s)=7 TeV, with a data sample collected with the CMS detector at the LHC. The sample corresponds to an integrated luminosity of 3.2 inverse picobarns. Event-shape distributions, corrected for detector response, are compared with five models of QCD multijet production.
Study Of Double Parton Scattering Using Four Jet Scenarios
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Author : Paolo Gunnellini
language : en
Publisher: Springer
Release Date : 2015-08-24
Study Of Double Parton Scattering Using Four Jet Scenarios written by Paolo Gunnellini and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-08-24 with Science categories.
This thesis addresses in a very new and elegant way several measurements and the extraction of so-called double parton scattering. The new and elegant way lies in the combination of measurements and a very smart extraction of double parton scattering results, which is easy to apply and overcomes many of the technical difficulties of older methods. Many new phenomena in particle physics can be observed when particles are collided at the highest energies; one of the highlights in recent years was the discovery of the Higgs boson at the Large Hadron Collider at CERN. Understanding the production mechanism of the Higgs boson at the LHC requires detailed knowledge of the physics of proton-proton collisions. When the density of partons in the protons becomes large, there is a non-negligible probability that more than one parton participates in the interaction and the so-called double parton scattering becomes important. In some cases very particular final state signatures can be observed, which can be regarded as an indication of such double partonic scattering and where the different interactions can be separated. Such multiple partonic interactions play an important role when precise predictions from known processes are required.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1995
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Aeronautics categories.
Qcd Radiation In Top Antitop And Z Jets Final States
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Author : Kiran Joshi
language : en
Publisher: Springer
Release Date : 2015-06-12
Qcd Radiation In Top Antitop And Z Jets Final States written by Kiran Joshi and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-06-12 with Science categories.
This thesis contains new research in both experimental and theoretical particle physics, making important contributions in each. Two analyses of collision data from the ATLAS experiment at the LHC are presented, as well as two phenomenological studies of heavy coloured resonances that could be produced at the LHC. The first data analysis was the measurement of top quark-antiquark production with a veto on additional jet activity. As the first detector-corrected measurement of jet activity in top-antitop events it played an important role in constraining the theoretical modelling, and ultimately reduced these uncertainties for ATLAS's other top-quark measurements by a factor of two. The second data analysis was the measurement of Z+2jet production and the observation of the electroweak vector boson fusion (VBF) component. As the first observation of VBF at a hadron collider, this measurement demonstrated new techniques to reliably extract VBF processes and paved the way for future VBF Higgs measurements. The first phenomenological study developed a new technique for identifying the colour of heavy resonances produced in proton-proton collisions. As a by-product of this study an unexpected and previously unnoticed correlation was discovered between the probability of correctly identifying a high-energy top and the colour structure of the event it was produced in. The second phenomenological study explored this relationship in more detail, and could have important consequences for the identification of new particles that decay to top quarks.
New States Of Matter In Hadronic Interactions
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Author : Hans-Thomas Elze
language : en
Publisher: American Institute of Physics
Release Date : 2002-10-22
New States Of Matter In Hadronic Interactions written by Hans-Thomas Elze and has been published by American Institute of Physics this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002-10-22 with Science categories.
Nuclear and particle physicists are searching for evidence of a new state of elementary matter with the constituents of nucleons and quarks, roaming freely in a deconfined state known as the quark-gluon plasma. To create the required conditions for this new phase to occur in the laboratory, relativistic heavy ion experimental facilities have been developed where heavy nuclei can collide at highly relativistic energies. Such collisions have the potential to provide, albeit for a very short time duration, the high energy density and temperature within an extended elementary volume, allowing the formation of this new phase. This text, co-authored by many experts, provides an elementary introduction and also surveys current experimental accomplishments. Many students participated in the write up of the lectures which are thus at an accessible level. An introduction to the research program in Latin America is offered in the spirit of the Pan-American Advanced Study Institute.
Government Reports Announcements Index
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Author :
language : en
Publisher:
Release Date : 1984-04
Government Reports Announcements Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1984-04 with Science categories.
Heavy Neutral Particle Decays To Tau Pairs
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Author : Michail Bachtis
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-12-13
Heavy Neutral Particle Decays To Tau Pairs written by Michail Bachtis and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-12-13 with Science categories.
The work presented in this thesis spans a wide range of experimental particle physics subjects, starting from level-1 trigger electronics to the final results of the search for Higgs boson decay and to tau lepton pairs. The thesis describes an innovative reconstruction algorithm for tau decays and details how it was instrumental in providing a measurement of Z decay to tau lepton pairs. The reliability of the analysis is fully established by this measurement before the Higgs boson decay to tau lepton pairs is considered. The work described here continues to serve as a model for analysing CMS Higgs to tau leptons measurements.
Aarbog For K Benhavns Universitet Kommunitetet Og Den Polytekniske L Reanstalt Danmarks Tekniske H Jskole
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Author : Københavns universitet
language : da
Publisher:
Release Date : 1996
Aarbog For K Benhavns Universitet Kommunitetet Og Den Polytekniske L Reanstalt Danmarks Tekniske H Jskole written by Københavns universitet and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with categories.
Government Reports Annual Index
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Author :
language : en
Publisher:
Release Date : 1988
Government Reports Annual Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Government reports announcements & index categories.
Radioactivity
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Author : Michael F. L'Annunziata
language : en
Publisher: Elsevier
Release Date : 2022-10-02
Radioactivity written by Michael F. L'Annunziata and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-10-02 with Science categories.
Radioactivity: History, Science, Vital Uses and Ominous Peril, Third Edition provides an introduction to radioactivity, the building blocks of matter, the fundamental forces in nature, and the role of quarks and force carrier particles. This new edition adds material on the dichotomy between the peaceful applications of radioactivity and the threat to the continued existence of human life from the potential use of more powerful and sophisticated nuclear weapons. The book includes a current review of studies on the probability of nuclear war and treaties, nonproliferation and disarmament, along with historical insights into the achievements of over 100 pioneers and Nobel Laureates. Through multiple worked examples, the book answers many questions for the student, teacher and practitioner as to the origins, properties and practical applications of radioactivity in fields such as medicine, biological and environmental research, industry, safe nuclear power free of greenhouse gases and nuclear fusion. Ratings and Reviews of Previous Editions: CHOICE Magazine, July 2008: "This work provides an overview of the many interesting aspects of the science of radioactive decays, including in-depth chapters that offer reminiscences on the history and important personalities of the field...This book can be useful as supplemental reading or as a reference when developing course material for nuclear physics, nuclear engineering, or health physics lectures. Special attention has been given to a chapter on the role radioactivity plays in everyday life applications...Generally the book is well produced and will be a valuable resource...Many lectures can be lightened up by including material from this work. Summing up: RECOMMENDED. Upper division undergraduates through professionals; technical program students." U. Greife, Colorado School of Mines, USA "I found the biographical accounts of the various stalwarts of Physics inspirational. Most of them, if not all, had to overcome economic hardships or p[ersonal tragedies or had to do their groundbreaking work in the face of tyranny and war. The biographies also highlighted the high standards of moral convictions that the scientists had as they realized the grave implications of some of their work and the potential threats to humanity. This ought to inspire and motivate young men and women aspiring to be physicists. Even people who have been in the field for a while should find your book re-energizing. It certainly had that effect on me." -- Dr. Ramkumar Venkataraman, Canberra Industries, Inc., Meriden, CT, USA Winner of an Honorable Mention in the 2017 PROSE Awards in the category of Chemistry and Physics (https://proseawards.com/winners/2017-award-winners/ ) - Includes new content that explains the vital benefits that nuclear technology provides and the need to be aware and involved in worldwide efforts toward the reduction of nuclear weapon stockpiles and the elimination of the threat of nuclear weapons - Provides context and insights on key research over the past three centuries, placing radioactivity in real-world contexts - Supports learning via multiple solved problems that answer practical questions concerning nuclear decay, nuclear radiation and the interaction of nuclear radiation with matter