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Accuracy And Precision In Collider Event Shapes
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Book Synopsis Accuracy and Precision in Collider Event Shapes by : Daniel Walter Kolodrubetz
Download or read book Accuracy and Precision in Collider Event Shapes written by Daniel Walter Kolodrubetz and published by . This book was released on 2016 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to gain a deeper understanding of the Standard Model of particle physics and test its limitations, it is necessary to carry out accurate calculations to compare with experimental results. Event shapes provide a convenient way for compressing the extremely complicated data from each collider event into one number. Using eective theories and studying the appropriate limits, it is possible to probe the underlying physics to a high enough precision to extract interesting information from the experimental results. In the initial sections of this work, we use a particular event shape, C-parameter, in order to make a precise measurement of the strong coupling constant, s. First, we compute the e+e- C-parameter distribution using the Soft-Collinear Eective Theory (SCET) with a resummation to N3LL' accuracy of the most singular partonic terms. Our result holds for C in the peak, tail, and far-tail regions. We treat hadronization effects using a field theoretic nonperturbative soft function, with moments [omega]n, and perform a renormalon subtraction while simultaneously including hadron mass effects. We then present a global fit for [alpha]s(mZ), analyzing the available C-parameter data in the resummation region, including center-of-mass energies between Q = 35 and 207 GeV. We simultaneously also fit for the dominant hadronic parameter, [omega]1. The experimental data is compared to our theoretical prediction, which has a perturbative uncertainty for the cross section of ~/= 2:5% at Q = mZ in the relevant t region for [alpha]s(mZ) and [omega]1. We find [alpha]s(mZ) = 0:1123 +/- 0:0015 and [omega]1 = 0:421 +/- 0:063 GeV with X2 / =dof = 0:988 for 404 bins of data. These results agree with the prediction of universality for [omega]1 between thrust and C-parameter within 1-[sigma]. The latter parts of this study are dedicated to taking SCET beyond leading power in order to further increase the possible precision of calculations. On-shell helicity methods provide powerful tools for determining scattering amplitudes, which have a one-to-one correspondence with leading power helicity operators in SCET away from singular regions of phase space. We show that helicity based operators are also useful for enumerating power suppressed SCET operators, which encode subleading amplitude information about singular limits. In particular, we present a complete set of scalar helicity building blocks that are valid for constructing operators at any order in the SCET power expansion. We also describe an interesting angular momentum selection rule that restricts how these building blocks can be assembled.
Book Synopsis Colliders And Neutrinos: The Window Into Physics Beyond The Standard Model (Tasi 2006) by : Sally Dawson
Download or read book Colliders And Neutrinos: The Window Into Physics Beyond The Standard Model (Tasi 2006) written by Sally Dawson and published by World Scientific. This book was released on 2008-08-20 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a collection of theoretical advanced summer institute lectures by world experts in the field of collider physics and neutrinos, the two frontier areas of particle physics today. It is aimed at graduate students and beginning researchers, and as such, provides many pedagogical details not generally available in standard conference proceedings.
Book Synopsis Introduction to Soft-Collinear Effective Theory by : Thomas Becher
Download or read book Introduction to Soft-Collinear Effective Theory written by Thomas Becher and published by Springer. This book was released on 2015-03-04 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: Among resummation techniques for perturbative QCD in the context of collider and flavor physics, soft-collinear effective theory (SCET) has emerged as both a powerful and versatile tool, having been applied to a large variety of processes, from B-meson decays to jet production at the LHC. This book provides a concise, pedagogical introduction to this technique. It discusses the expansion of Feynman diagrams around the high-energy limit, followed by the explicit construction of the effective Lagrangian - first for a scalar theory, then for QCD. The underlying concepts are illustrated with the quark vector form factor at large momentum transfer, and the formalism is applied to compute soft-gluon resummation and to perform transverse-momentum resummation for the Drell-Yan process utilizing renormalization group evolution in SCET. Finally, the infrared structure of n-point gauge-theory amplitudes is analyzed by relating them to effective-theory operators. This text is suitable for graduate students and non-specialist researchers alike as it requires only basic knowledge of perturbative QCD.
Book Synopsis QCD and Collider Physics by : R. K. Ellis
Download or read book QCD and Collider Physics written by R. K. Ellis and published by Cambridge University Press. This book was released on 2003-12-04 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: A detailed overview of the physics of high-energy colliders emphasising the role of QCD.
Book Synopsis Physics And Experiments With Linear Colliders (In 2 Vols) by : P Eerola
Download or read book Physics And Experiments With Linear Colliders (In 2 Vols) written by P Eerola and published by World Scientific. This book was released on 1992-11-20 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt: This workshop brought together for the first time accelerator experts as well as experimental and theoretical high energy physicists from all over the world to consider the physics potential of high energy linear electron-positron colliders. A wide variety of physics cases were presented ranging from precision tests of the top quark and electroweak gauge bosons to searches of the intermediate mass Higgs bosons and supersymmetric particles.
Book Synopsis Precision Electroweak Physics at Electron-Positron Colliders by : Stefan Roth
Download or read book Precision Electroweak Physics at Electron-Positron Colliders written by Stefan Roth and published by Springer. This book was released on 2007-04-16 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews recent contributions of electron positron colliders to the precision test of the electroweak Standard Model. It includes a short summary of the measurements at the Z resonance and gives an overview of the electroweak processes above the Z. Subsequently, measurements of the W mass at LEP are discussed in detail. Late chapters offer an outlook on electroweak physics at the future LHC. Also features many illustrations and tables.
Book Synopsis Linear Collider Physics in the New Millennium by : Keisuke Fujii
Download or read book Linear Collider Physics in the New Millennium written by Keisuke Fujii and published by World Scientific. This book was released on 2005 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: The high energy electron-positron linear collider is expected to provide crucial clues to many of the fundamental questions of our time: What is the nature of electroweak symmetry breaking? Does a Standard Model Higgs boson exist, or does nature take the route of supersymmetry, technicolor or extra dimensions, or none of the foregoing? This invaluable book is a collection of articles written by experts on many of the most important topics which the linear collider will focus on. It is aimed primarily at graduate students but will undoubtedly be useful also to any active researcher on the physics of the next generation linear collider.
Book Synopsis Multiple Parton Interactions At The Lhc by : Paolo Bartalini
Download or read book Multiple Parton Interactions At The Lhc written by Paolo Bartalini and published by World Scientific Publishing. This book was released on 2018-11-02 with total page 471 pages. Available in PDF, EPUB and Kindle. Book excerpt: Many high-energy collider experiments (including the current Large Hadron Collider at CERN) involve the collision of hadrons. Hadrons are composite particles consisting of partons (quarks and gluons), and this means that in any hadron-hadron collision there will typically be multiple collisions of the constituents — i.e. multiple parton interactions (MPI). Understanding the nature of the MPI is important in terms of searching for new physics in the products of the scatters, and also in its own right to gain a greater understanding of hadron structure. This book aims at providing a pedagogical introduction and a comprehensive review of different research lines linked by an involvement of MPI phenomena. It is written by pioneers as well as young leading scientists, and reviews both experimental findings and theoretical developments, discussing also the remaining open issues.
Book Synopsis Resummation of Event-shapes at Hadron-hadron Colliders by : G. Zanderighi
Download or read book Resummation of Event-shapes at Hadron-hadron Colliders written by G. Zanderighi and published by . This book was released on 2005 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: We point out that a study of event shapes at hadron colliders allows to explore novel aspects of QCD. These studies are today made easier by the development of a program which automates the resummation.
Book Synopsis Proceedings of the XXV DAE-BRNS High Energy Physics (HEP) Symposium 2022, 12–16 December, Mohali, India by : Satyajit Jena
Download or read book Proceedings of the XXV DAE-BRNS High Energy Physics (HEP) Symposium 2022, 12–16 December, Mohali, India written by Satyajit Jena and published by Springer Nature. This book was released on with total page 1353 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Anomaly! Collider Physics And The Quest For New Phenomena At Fermilab by : Tommaso Dorigo
Download or read book Anomaly! Collider Physics And The Quest For New Phenomena At Fermilab written by Tommaso Dorigo and published by World Scientific. This book was released on 2016-09-26 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'Dorigo provides an engaging and insightful perspective on the pursuit of physics discoveries at CDF … Dorigo’s book is thus almost certainly going to be an important source for anyone interested in the history of CDF … It is a personal yet highly informative story of discovery and almost-discovery from the perspective of someone who saw the events firsthand.'Physics TodayFrom the mid-1980s, an international collaboration of 600 physicists embarked on the investigation of subnuclear physics at the high-energy frontier. As well as discovering the top quark, the heaviest elementary particle ever observed, the physicists analyzed their data to seek signals of new physics which could revolutionize our understanding of nature.Anomaly! tells the story of that quest, and focuses specifically on the finding of several unexplained effects which were unearthed in the process. These anomalies proved highly controversial within the large team: to some collaborators they called for immediate publication, while to others their divulgation threatened to jeopardize the reputation of the experiment.Written in a confidential, narrative style, this book looks at the sociology of a large scientific collaboration, providing insight in the relationships between top physicists at the turn of the millennium. The stories offer an insider's view of the life cycle of the 'failed' discoveries that unavoidably accompany even the greatest endeavors in modern particle physics.
Book Synopsis Collider Physics - Proceedings Of The Eighth Lake Louise Winter Institute by : Faqir C Khanna
Download or read book Collider Physics - Proceedings Of The Eighth Lake Louise Winter Institute written by Faqir C Khanna and published by World Scientific. This book was released on 1994-01-28 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume stresses the important physics developments at various collider facilities. Details of detector systems and their special features for exploiting the strength of a particular collider are also emphasized. The theoretical studies pursue the limits of the standard model and explore the new physics that may emerge at high energy facilities. The lectures are of a pedagogical nature, so that they are useful to students and post-doctoral fellows.
Book Synopsis High Energy Phenomenology by : K.J Peach
Download or read book High Energy Phenomenology written by K.J Peach and published by CRC Press. This book was released on 1994-01-01 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: A collection of lectures from eight authoritative speakers, High Energy Phenomenology is a concise introduction for postgraduates new to the field and provides a comprehensive overview of important research activities, results, and future directions for existing researchers. Coverage includes Ian Aitchison's introduction of standard model foundations, HERA physics, the physics and experimental challenges of future hadron colliders, and particle physics and cosmology. The book concludes with Alain Blondel's chapter on precision tests of the standard electroweak model at LEP.
Book Synopsis Quantum Chromodynamics - Proceedings Of The Thirteenth Lake Louise Winter Institute by : Faqir C Khanna
Download or read book Quantum Chromodynamics - Proceedings Of The Thirteenth Lake Louise Winter Institute written by Faqir C Khanna and published by World Scientific. This book was released on 1999-02-04 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings of the Lake Louise Winter Institute for 1998 deal with strong interactions. This includes the jet physics and fragmentation functions as needed in high energy collider physics, deep inelastic scattering to study the structure functions of nucleons, and finally physics with the production and hadronization of quark-gluon plasma at Relativistic Heavy Ion Collider. Both the theoretical developments and experimental data were presented with the intent of establishing their relationship and finding new directions of study.
Book Synopsis Physics With High Energy Colliders - Proceedings Of 22nd Ins International Symposium by : Sachie Yamada
Download or read book Physics With High Energy Colliders - Proceedings Of 22nd Ins International Symposium written by Sachie Yamada and published by World Scientific. This book was released on 1995-04-26 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent results from all types of high energy colliders (e⁺e⁻, pp, ep) are presented from the view point of electroweak interaction and QCD/Jet physics together with related phenomenological reviews. Expected physics at future colliders, both being built or planned, are also discussed including e+e- linear collider, pp collider and heavy ion collider.
Book Synopsis New Physics At The Large Hadron Collider - Proceedings Of The Conference by : Harald Fritzsch
Download or read book New Physics At The Large Hadron Collider - Proceedings Of The Conference written by Harald Fritzsch and published by World Scientific. This book was released on 2016-10-27 with total page 457 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Standard Theory of Particle Physics describes successfully the observed strong and electroweak interactions, but it is not a final theory of physics, since many aspects are not understood: (1) How can gravity be introduced in the Standard Theory? (2) How can we understand the observed masses of the leptons and quarks as well as the flavor mixing angles? (3) Why are the masses of the neutrinos much smaller than the masses of the charged leptons? (4) Is the new boson, discovered at CERN, the Higgs boson of the Standard Theory or an excited weak boson? (5) Are there new symmetries at very high energy, e.g. a broken supersymmetry? (6) Are the leptons and quarks point-like or composite particles? (7) Are the leptons and quarks at very small distances one-dimensional objects, e.g. superstrings? This proceedings volume comprises papers written by the invited speakers discussing the many important issues of the new physics to be discovered at the Large Hadron Collider.
Book Synopsis Top Quark Physics at Hadron Colliders by : Arnulf Quadt
Download or read book Top Quark Physics at Hadron Colliders written by Arnulf Quadt and published by Springer Science & Business Media. This book was released on 2007-08-16 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: This will be a required acquisition text for academic libraries. More than ten years after its discovery, still relatively little is known about the top quark, the heaviest known elementary particle. This extensive survey summarizes and reviews top-quark physics based on the precision measurements at the Fermilab Tevatron Collider, as well as examining in detail the sensitivity of these experiments to new physics. Finally, the author provides an overview of top quark physics at the Large Hadron Collider.
