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Download or read book Gauge-boson Self-interactions and T Øt Production as Probes of New Physics at High Energy E(+)e( - ) Colliders written by and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mikulas Gintner
Publisher :
ISBN 13 :
Total Pages : 310 pages
Book Rating : 4.:/5 (29 download)
Download or read book Gauge-boson Self-interactions and Tt Production as Probes of New Physics at High Energy E+e- Colliders written by Mikulas Gintner and published by . This book was released on 1997 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 25 pages
Book Rating : 4.:/5 (727 download)
Download or read book Studies of the Interactions of Electroweak Gauge Bosons written by and published by . This book was released on 1991 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exploration of the electroweak interactions of quarks and leptons has ascended along the energy frontier for the past two decades, and has recently culminated in the elegant results obtained with the SLC and LEP electron-positron colliders operating at the Z°. The SU(2) isospin symmetry of the fermion sector is nearly completely known. It remains to uncover the top quark, and determine the precise relationship between the electroweak eigenstates and those of the mass operator embodied in the Cabibbo-Kobayashi-Maskawa formalism. While our parameterization of the fermion sector of nature is becoming increasingly clear, we have no empirical knowledge of the interactions and possible structures of gauge bosons (with the exception, of course, of the massless photon). In this series of lectures we will review the origins of the interactions between gauge bosons that exist within the Standard Model, and explore signatures of new physics that might appear in the gauge-boson sector. Special attention will be given to pair-production of gauge bosons in ee− annihilation at center-of-mass energies above those available at LEP 2, and to scattering processes that could possibly be studied at very high energy ee− and hadron colliders in the next century. 31 refs., 38 figs.
Download or read book Anomalous Gauge Boson Interactions written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We discuss the direct measurement of the trilinear vector boson couplings in present and future collider experiments. The major goals of such experiments will be the confirmation of the Standard Model (SM) predictions and the search for signals of new physics. We review our current theoretical understanding of anomalous trilinear gauge-boson self interactions. If the energy scale of the new physics is[approximately] 1 TeV, these low energy anomalous couplings are expected to be no larger than[Omicron](10[sup[minus]2]). Constraints from high precision measurements at LEP and low energy charged and neutral current processes are critically reviewed.
Author :
Publisher :
ISBN 13 :
Total Pages : 17 pages
Book Rating : 4.:/5 (893 download)
Download or read book Two Gauge Boson Physics at Future Colliders written by and published by . This book was released on 1988 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electroweak unification suggests that there should be WW and ZZ physics analogous to [gamma][gamma] physics. Indeed, WW and ZZ collisions will provide an opportunity to search for the Higgs boson at future high energy colliders. Cross sections in the picobarn range are predicted for Higgs boson production at the proposed 40-TeV SSC. While other states may be produced by WW and ZZ collisions, it is the Higgs boson that looms as the most attractive objective. 31 refs., 5 figs.
Author :
Publisher :
ISBN 13 :
Total Pages : 1224 pages
Book Rating : 4.3/5 (91 download)
Download or read book Physics Briefs written by and published by . This book was released on 1994 with total page 1224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 5 pages
Book Rating : 4.:/5 (684 download)
Download or read book Probing Quartic Couplings Through Three Gauge Boson Production at an Ee− Linear Collider written by and published by . This book was released on 1996 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: We explore the capability of a 500 or 1000 GeV e e− linear collider to measure anomalous quartic gauge boson couplings. In the framework of a non-linear effective Lagrangian with a custodial SU(2) symmetry, there are only two next-to-leading order operators which contribute to quartic, but not to two- and three-gauge boson interactions. The limits on the coefficients of these operators from present and future e e− colliders are compared with those available from other sources.
Author : Diogenes Alberto Figueroa
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (133 download)
Download or read book Towards Higher Theoretical Precision for Electroweak Boson Production with B-jets at Hadron Colliders written by Diogenes Alberto Figueroa and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Processes involving the production of electroweak gauge bosons($W, Z, \gamma$) or a Higgs boson with $b$ jets play a very important role in stress testing the Standard Model and constitute major backgrounds in most searches of new physics beyond the Standard Model at present and future colliders. Given the unprecedented experimental precision that will be reached bythe Large Hadron Collider (LHC) experiments during the upcoming Run 3 and the high-luminosity upgrade (HL-LHC), improving the accuracy of theoretical predictions to reach the few-percent level becomes crucial to the success of their physics program. Besides accounting for QCD quantum corrections, this implies including electroweak quantum effects, $b$-quark mass effects, and effects due to the off-shellness of the final-state boson decaying into leptons or quarks, as well as revisiting approximations that enters in the evolution of a high-energy collision into final-state jets of hadrons. In this thesis we develop a general formalism (massive dipoles and massive 5 flavor scheme) to systematically account for $b$-quark mass effects at all stages, from the $b$-quark parton densities in the initial-state protons to the matching of $b$ quarks from the hard scattering to the final-state hadrons via parton shower. Formal results form this thesis have been implemented in the\texttt{Madisqe} framework to allow the general calculation of Standard Model cross sections including the first order of QCD and electroweak corrections and accounting for full $b$-quark mass effects. Furthermore, they have been used to improve the efficiency and numerical stability of \texttt{NLOX}, a public domain framework for the automated calculation of one-loop Standard Model scattering amplitudes. As a particularly interesting study case, we present in this thesisthe case of $Z+b$ jets. The production of a $Z$ boson with bottom quarks can probe both the fundamental properties of $b$ quarks as constituents of hadrons and hadron jets, and represents one of the major backgrounds to precision measurements of Higgs-boson couplings in $ZH (H\rightarrow b\bar{b}$) associated production as well as in many searches of new physics. In this thesis, we study in particulat the impact of EW corrections and $b$-quark mass effects on total and differential rates for $Z+b$ jets at the LHC.
Author : B Adeva
Publisher : World Scientific
ISBN 13 : 981454356X
Total Pages : 372 pages
Book Rating : 4.8/5 (145 download)
Download or read book Selected Topics On Electroweak Interactions, Neutrinos And Qcd: A Review Of High Energy Colliders - Proceedings Of The Xxvith International Meeting On Fundamental Physics written by B Adeva and published by World Scientific. This book was released on 1999-11-15 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides a broad picture of the current understanding of electroweak and strong interactions, according to most recent experimental results from some of the world's largest particle accelerators: LEP II, Tevatron, HERA and SPS. Special attention is given to CP violation, the Higgs boson search, and precision tests of the electroweak thoery. Although generally oriented, the contributions are targeted at postgraduate students in particle physics.
Author : Akiya Miyamoto
Publisher :
ISBN 13 :
Total Pages : 25 pages
Book Rating : 4.:/5 (255 download)
Download or read book Experimental Aspects of Gauge Boson Studies at Next Linear E + E - Colliders written by Akiya Miyamoto and published by . This book was released on 1993 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : K. Hagiwara
Publisher :
ISBN 13 :
Total Pages : 47 pages
Book Rating : 4.:/5 (258 download)
Download or read book Probing Nonstandard Bosonic Interactions Via W-boson Pair Production at Lepton Colliders written by K. Hagiwara and published by . This book was released on 1996 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (684 download)
Download or read book Precision Tests of the Standard Model at Electron Colliders written by and published by . This book was released on 2002 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: We review electroweak physics studies in high-energy ee− collisions at CERN and SLAC. Studies of couplings of the Z° boson to many of the fundamental fermions are now quite detailed, and those of the W{sup {+-}} bosons are well under way. Sensitivity to radiative corrections due to the massive top quark, the as yet undiscovered Higgs boson, and new physics at the TeV scale has been achieved. The Standard Model is consistent with all data, although further studies are indicated in several areas. In the absence of new physics, the Higgs mass is limited to
Author :
Publisher :
ISBN 13 :
Total Pages : 23 pages
Book Rating : 4.:/5 (871 download)
Download or read book Top-Charm Associated Production in High Energy Ee− Collisions written by and published by . This book was released on 1998 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: The possibility of exploring the flavor changing neutral current tcZ/tc[gamma] couplings in the production vertex for the reaction ee− 2!t{bar c} + {bar t}c is examined. Using a model independent parameterization for the effective Lagrangian to describe the most general three-point interactions, production cross sections are found to be relatively small at LEP II, but potentially sizeable at higher energy ee− colliders. The kinematic characteristics of the signal are studied and a set of cuts are devised for clean separation of the signal from background. The resulting sensitivity to anomalous flavor changing couplings at LEP II with an integrated luminosity of 4 x 500 pb−1 is found to be comparable to their present indirect constraints from loop processes, while at higher energy colliders with 0.5-1 TeV center-of-mass energy and 50-200 fb−1 luminosity, one expects to reach a sensitivity at or below the percentage level.
Author :
Publisher :
ISBN 13 :
Total Pages : 716 pages
Book Rating : 4.0/5 ( download)
Download or read book High Energy Physics Index written by and published by . This book was released on 1990 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jae Nam
Publisher :
ISBN 13 :
Total Pages : 194 pages
Book Rating : 4.:/5 (13 download)
Download or read book Weak Boson Production in High Energy Colliders as a Probe of Nucleon Structure written by Jae Nam and published by . This book was released on 2021 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presented in this thesis are measurements of W boson production in high energy pp collisions and ep deep inelastic scattering that take place at RHIC and HERA facilities, respectively. These measurements explore the inner structure of the nucleons, in particular, probing the distributions of the light flavor sea which consists of up, down and strange quarks. The W+/W− cross-section ratio, RW , in pp collisions is sensitive to the asymmetry in the ̄d and ̄u flavors in the nucleon sea. This ratio was first measured with the STAR detector at RHIC with the data collected in 2009 and again with the data collected from 2011 to 2013, featuring pp collisions of a center-of-mass energy of √s = 500/510 GeV and an integrated luminosity of ∼ 350 pb−1. The study considered in this thesis further improves the precision of this measurement by analyzing an additional data set collected in 2017 which corresponds to an integrated luminosity of ∼ 350 pb−1. The experimental results are compared to theory predictions generated with various global PDF fits. The measurement performed at HERA searches for the strange quark content in the nucleon via charm production in charged current deep inelastic scattering. This is the first measurement of its kind, using the HERA II data collected with the ZEUS detector. This data set corresponds to e±p collisions at a center-of-mass energy of √s = 318 GeV with an integrated luminosity of 358 pb−1. The results are consistent with expectations from the Standard Model, albeit with large experimental uncertainties arising from the limited statistics.
Author : Steven M. Glenn
Publisher :
ISBN 13 :
Total Pages : 444 pages
Book Rating : 4.:/5 (55 download)
Download or read book A Search for Self-interactions of Neutral Electroweak Gauge Bosons written by Steven M. Glenn and published by . This book was released on 1996 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Searching for an Exotic Lepton and Gauge Boson at High Energy Ee written by and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The possibility of searching in high energy ee/sup /minus// collisions for a singly produced heavy with an ordinary light lepton, ee/sup /minus// .-->. L+l/sup /minus//, has been investigated. The search is motivated mainly by its distinctive experimental signatures. In a data sample corresponding to an integrated luminosity of 30 fb/sup /minus/1/ collected at a 1 TeV e+e/sup /minus// collider, the search is sensitive to a lepton of mass up to about 1 TeV/c2 and a production cross section as low as 10% of the .mu.-pair point cross section. For the case where the process is mediated by an exotic gauge boson, sensitivity to a gauge boson of mass up to about 2 TeV/c2 can be achieved. 5 refs., 7 figs., 2 tabs.
