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Download or read book A Search for Excited Leptons in the Energy Region √s written by and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Publisher :
ISBN 13 :
Total Pages : 54 pages
Book Rating : 4.:/5 (16 download)
Download or read book Search for Excited Leptons in Proton-proton Collisions at {u221A}(s) written by and published by . This book was released on 2016 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: Our search for compositeness of electrons and muons is presented using a data sample of proton-proton collisions at a center-of-mass energy of √(s) = 8 TeV collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 19.7 fb-1. Excited leptons (l*) produced via contact interactions in conjunction with a standard model lepton are considered, and a search is made for their gauge decay modes. The decays considered are l* →l? and l* → lZ, which give final states of two leptons and a photon or, depending on the Z-boson decay mode, four leptons or two leptons and two jets. The number of events observed in data is consistent with the standard model prediction. Exclusion limits are set on the excited lepton mass, and the compositeness scale L. For the case Ml* = L the existence of excited electrons (muons) is excluded up to masses of 2.45 (2.47) TeV at 95% confidence level. The neutral current decays of excited leptons are considered for the first time, and limits are extended to include the possibility that the weight factors f and f ', which determine the couplings between standard model leptons and excited leptons via gauge mediated interactions, have opposite sign.
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ISBN 13 :
Total Pages : 29 pages
Book Rating : 4.:/5 (16 download)
Download or read book A Search for Excited Leptons in Pp Collisions at Sqrt(s) written by and published by . This book was released on 2011 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: A search for excited leptons is carried out with the CMS detector at the LHC, using 36 inverse picobarns of pp collision data recorded at sqrt(s) = 7 TeV. The search is performed for associated production of a lepton and an oppositely charged excited lepton pp to l l*, followed by the decay l* to l gamma, resulting in the l l gamma final state, where l = electron or muon. No excess of events above the standard model expectation is observed. Interpreting the findings in the context of l* production through four-fermion contact interactions and subsequent decay via electroweak processes, first upper limits are reported for l* production at this collision energy. The exclusion region in the compositeness scale Lambda and excited lepton mass M(l*) parameter space is extended beyond previously established limits. For Lambda = M(l*), excited lepton masses are excluded below 1070 GeV/c2̂ for e* and 1090 GeV/c2̂ for mu* at the 95% confidence level.
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ISBN 13 :
Total Pages : 1032 pages
Book Rating : 4.:/5 (3 download)
Download or read book Energy Research Abstracts written by and published by . This book was released on 1994 with total page 1032 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
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ISBN 13 :
Total Pages : 786 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 786 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Daniel Lellouch
Publisher : Springer Science & Business Media
ISBN 13 : 3642599826
Total Pages : 1293 pages
Book Rating : 4.6/5 (425 download)
Download or read book International Europhysics Conference on High Energy Physics written by Daniel Lellouch and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 1293 pages. Available in PDF, EPUB and Kindle. Book excerpt: The 1997 International Europhysics Conference on High Energy Physics was held at the campus of the Hebrew University of Jerusalem and at the Jerusalem Renaissance Hotel, from August 19th to August 25th, 1997. This was the first time that the European Physical Society had its High Energy Physics Conference outside the boundary of Europe. A total of 550 physicists participated in the conference with a total of 250 presentations in the parallel sessions and 26 presentations in the plenary sessions. The Board of the of the High Energy and Particle Physics division (HEPP) of the EPS acted as the Scientific Organizing Committee. The Board acknowl edges the help of the International Advisory Committee as well as that of the Local Organizing Committee. The conference was co-organized by the Hebrew University of Jerusalem and by the Weizmann Institute of Science, with important help by physi cists from the Israeli Institute of Technology (Technion) and the Tel Aviv University.
Author : Gava E
Publisher : World Scientific
ISBN 13 : 9814547735
Total Pages : 728 pages
Book Rating : 4.8/5 (145 download)
Download or read book High Energy Physics And Cosmology - Proceedings Of The 1995 Summer School written by Gava E and published by World Scientific. This book was released on 1997-02-27 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Luisa Cifarelli
Publisher : World Scientific
ISBN 13 : 9814545368
Total Pages : 436 pages
Book Rating : 4.8/5 (145 download)
Download or read book Universality Features In Multihadron Production And The Leading Effect: Proceedings Of The 33rd Workshop written by Luisa Cifarelli and published by World Scientific. This book was released on 1998-03-10 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Eloisatron Project aims at the study of physics phenomena in hadron-hadron colliders at the limits of maximum energy and luminosity. QCD processes involving multiparticle final states have shown 'universality features' in different production reactions once the 'leading effects' are correctly accounted for. The study of these phenomena has three components: (i) at now-available energies; (ii) at future energies in the years to come; (iii) at extreme energies. The link between these components can be achieved by QCD and its developments.This volume reviews the recent status of QCD and discusses novel aspects of perturbative and non-perturbative approaches to different kinds of interactions. It contains various contributions on multihadron production (theory and phenomenology), perturbative QCD and pomeron physics. Also, the latest experimental results on pp, ep and e⁺e⁻ interactions are presented.
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Download or read book Search for Excited Leptons in the Next Generation of Experiments. [Preons]. written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Production cross sections of excited leptons in ee− annihilation experiments are estimated. Light excited states can be produced below the characteristic energy scale at which hypothetical constituents of leptons become bound: therefore the estimates are expected to be valid for E/sub cm/ less than or equal to 100 GeV, and to a large degree, model independent. The results are expressed in terms of measurable low energy parameters. It is concluded that high precision experiments are needed for an effective search for excited leptons.
Author : J. Thanh Van Tran
Publisher : Atlantica Séguier Frontières
ISBN 13 : 9782863320334
Total Pages : 492 pages
Book Rating : 4.3/5 (23 download)
Download or read book Perspectives of Electroweak Interactions written by J. Thanh Van Tran and published by Atlantica Séguier Frontières. This book was released on 1985 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Matthias Endres
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (14 download)
Download or read book Searches for Excited Leptons in √s written by Matthias Endres and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Rainer Kotthaus
Publisher : Springer Science & Business Media
ISBN 13 : 3642741363
Total Pages : 1634 pages
Book Rating : 4.6/5 (427 download)
Download or read book International Conference on High Energy Physics/ International Union of Pure and Applied Physics, 24. 1988, München written by Rainer Kotthaus and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 1634 pages. Available in PDF, EPUB and Kindle. Book excerpt: This was the most recent in a highly esteemed series of biannual Rochester conferences. 20 invited reviews and about 200 invited contributions on all aspects of current research in high energy and particle physics give a complete and lively account of achievements, activities and goals in the field. Topics discussed include results from proton-antiproton and electron-positron colliders, spectroscopy and decays of heavy flavors, weak mixing and CP violation, non-accelerator particle physics, heavy ion collisions, future accelerators, detector developments, the standard electroweak model and beyond, the status of perturbative QCD, superstrings and unification, new developments in field theory, non-perturbative methods, and cosmology and astrophysics.
Author : Tōkyō Daigaku. Genshikaku Kenkyūjo
Publisher :
ISBN 13 :
Total Pages : 706 pages
Book Rating : 4.3/5 (91 download)
Download or read book Report written by Tōkyō Daigaku. Genshikaku Kenkyūjo and published by . This book was released on 1987 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : G. ABBIENDI
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (134 download)
Download or read book Search for Charged Excited Leptons in e+e− Collisions at √s written by G. ABBIENDI and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jean Thanh Vân Trâǹ
Publisher : Atlantica Séguier Frontières
ISBN 13 : 9782863322444
Total Pages : 548 pages
Book Rating : 4.3/5 (224 download)
Download or read book '98 Electroweak Interactions and Unified Theories written by Jean Thanh Vân Trâǹ and published by Atlantica Séguier Frontières. This book was released on 1999 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jose W F Valle
Publisher : World Scientific
ISBN 13 : 9814555398
Total Pages : 518 pages
Book Rating : 4.8/5 (145 download)
Download or read book Electroweak Physics Beyond The Standard Model - International Workshop written by Jose W F Valle and published by World Scientific. This book was released on 1992-07-20 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: The implications of the latest results from high energy experiments as well as non-accelerator experiments are discussed in this proceedings. Emphasis is given to neutrino physics, tests of the standard electroweak theory, and its extensions. Perspectives for the physics of the new decade are also considered.
Author : Alan Astbury
Publisher : World Scientific
ISBN 13 : 9814644919
Total Pages : 1899 pages
Book Rating : 4.8/5 (146 download)
Download or read book Proceedings Of The 29th International Conference On High Energy Physics: Ichep '98 (In 2 Volumes) written by Alan Astbury and published by World Scientific. This book was released on 1999-06-11 with total page 1899 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings consist of plenary rapporteur talks covering topics of major interest to the high energy physics community and parallel sessions papers which describe recent research results and future plans.
