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ISBN 13 :
Total Pages : 114 pages
Book Rating : 4.:/5 (244 download)
Download or read book Principal Statutes Affecting the Organization, Names & Functions of the Bureaus of the Department of Commerce written by and published by . This book was released on 192? with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 342 pages
Book Rating : 4.:/5 (47 download)
Download or read book Forastiero illuminato interno le cose piu rare e curiose antiche e moderne della citta di Venezia e dell'isole circonvicine written by and published by . This book was released on 1796 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Christian Schmitt
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ISBN 13 :
Total Pages : 3 pages
Book Rating : 4.:/5 (316 download)
Download or read book Measurement of the W Helicity in T Anti-t Decays at S**(1/2) written by Christian Schmitt and published by . This book was released on 2004 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two measurements of the W-helicity in t{bar t} decays at {radical}s = 1.96 TeV have been carried out using data collected by the D0 detector. Semileptonic t{bar t} events in the electron and muon channel were used. In these events the distribution of the angle between the lepton and the direction of the top measured in the rest frame of the intermediate W boson is sensitive to the helicities of the W. The two analyses differ in the usage of lifetime tag information in the event selection. With an integrated luminosity of 168:7 pb{sup -1} and 158.4 pb{sup -1} in the e+jets and {mu}+jets channels respectively, an upper limit on the fraction f{sub +} of positive helicity W's of f{sub +}
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ISBN 13 :
Total Pages : 3 pages
Book Rating : 4.:/5 (16 download)
Download or read book Measurement of the W Helicity in T Anti-t Decays at S**ư written by and published by . This book was released on 2004 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two measurements of the W-helicity in t{bar t} decays at √s = 1.96 TeV have been carried out using data collected by the D0 detector. Semileptonic t{bar t} events in the electron and muon channel were used. In these events the distribution of the angle between the lepton and the direction of the top measured in the rest frame of the intermediate W boson is sensitive to the helicities of the W. The two analyses differ in the usage of lifetime tag information in the event selection. With an integrated luminosity of 168:7 pb−1 and 158.4 pb−1 in the e+jets and?+jets channels respectively, an upper limit on the fraction f+ of positive helicity W's of f+
Download or read book Measurement of W Boson Helicity Fractions in T Anti-t Decays at DZero and CDF. written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The properties of the W boson can be probed in top quark decays t --> bW. The CDF and DZero collaborations have released updated measurements of the W boson helicity fractions f0, f+ and f. The analysis techniques and updated measurements are discussed. This paper summarizes the talk given at the DIS2008 conference.
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ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (873 download)
Download or read book Measurement of the Helicity Fractions of W Bosons from Top Quark Decays Using Fully Reconstructed T Anti-t Events with CDF II. written by and published by . This book was released on 2006 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors present a measurement of the fractions F0 and F+ of longitudinally polarized and right-handed W bosons in top quark decays using data collected with the CDF II detector. The data set used in the analysis corresponds to an integrated luminosity of approximately 318 pb−1. They select t{bar t} candidate events with one lepton, at least four jets, and missing transverse energy. The helicity measurement uses the decay angle [theta]*, which is defined as the angle between the momentum of the charged lepton in the W boson rest frame and the W momentum in the top quark rest frame. The cos [theta]* distribution in the data is determined by full kinematic reconstruction of the t{bar t} candidates. They find F0 = 0.85{sub -0.22}{sup +0.15}(stat)±0.06(syst) and F+ = 0.05{sub -0.05}{sup +0.11}(stat) ± 0.03(syst), which is consistent with the standard model prediction. They set an upper limit on the fraction of right-handed W bosons of F+
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ISBN 13 :
Total Pages : 163 pages
Book Rating : 4.:/5 (16 download)
Download or read book Measurement of the W Boson Helicity in T$\bar{t}$ Decays written by and published by . This book was released on 2005 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: The subject of this thesis is the measurement of the helicity of the W boson produced in the decay of the top quark. The standard model predicts the helicity of these W bosons to be either negative or zero, but not positive. In case the top quark sector is already influenced by effects from new physics, the weak charged current, responsible for the decay of the top quark, can be altered from a pure V=A charged current interaction to a pure V+A interaction or a mixture between these two scenarios. This would decrease the fraction of W bosons with negative helicity and W bosons with positive helicity would appear. A change would then be visible in the distribution of the decay angle ? between the lepton and the (negative) b quark direction in the rest frame of the W boson.
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ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (873 download)
Download or read book Measurement of the W-boson Helicity Fractions in Top-quark Decays at CDF. written by and published by . This book was released on 2007 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a measurement of the fractions F0 and F+ of longitudinally polarized and right-handed W bosons in top-quark decays using data collected with the CDF II detector. The data set used in the analysis corresponds to an integrated luminosity of approximately 955 pb−1. We select t{bar t} candidate events with one lepton, at least four jets, and missing transverse energy. Our helicity measurement uses the decay angle [theta]*, which is defined as the angle between the momentum of the charged lepton in the W boson rest-frame and the W momentum in the top-quark rest-frame. The cos[theta]* distribution in the data is determined by full kinematic reconstruction of the t{bar t} candidates. We find F0= 0.59 ± 0.12(stat){sup +0.07}{sub -0.06}(syst) and F+=-0.03 ± 0.06(stat){sup +0.04}{sub -0.03}(syst), which is consistent with the standard model prediction. We set an upper limit on the fraction of right-handed W bosons of F+ ≤ 0.10 at the 95% confidence level.
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ISBN 13 :
Total Pages : 17 pages
Book Rating : 4.:/5 (727 download)
Download or read book Measurement of W-Boson Helicity Fractions in Top-Quark Decays Using Costheta* written by and published by . This book was released on 2008 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download A Study of Future Measurements of W Boson Helicity in T -] Wb at CDF. PDF Online Free](https://books.google.com/books/content/images/frontcover/Y9JJnQAACAAJ?fife=w200-h370)
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ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.:/5 (873 download)
Download or read book A Study of Future Measurements of W Boson Helicity in T -] Wb at CDF. written by and published by . This book was released on 2002 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: The interactions of the top quark will soon be coming under greater scrutiny at CDF with Run II of the Fermilab Tevatron collider. This investigation gauges CDF's improved ability to measure the helicity of W bosons produced in top quark decays. Such measurements will provide a direct indication of the spin structure of the weak interaction responsible for the top decay process. Simulated CDF Run II data is used to study the W helicity sensitivity of the muon momentum in [mu] + jets events, as limited by both statistical and systematic uncertainties. Optimization of helicity measurements via appropriate choices of event variables and data criteria is also addressed.
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ISBN 13 :
Total Pages : 1396 pages
Book Rating : 4.3/5 (91 download)
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975 with total page 1396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Simone Maria Liuzzo
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ISBN 13 :
Total Pages : 39 pages
Book Rating : 4.:/5 (886 download)
Download or read book Measurement of Helicity Fractions of W Bosons from Top Quark Decay Produced in Tt'events at Tev Atron written by Simone Maria Liuzzo and published by . This book was released on 2007 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Joseph M. Harrer
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ISBN 13 : 9780870790058
Total Pages : 1052 pages
Book Rating : 4.7/5 (9 download)
Download or read book Nuclear Power Reactor Instrumentation Systems Handbook written by Joseph M. Harrer and published by . This book was released on 1973 with total page 1052 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download A Measurement of the Michel Parameters and Nt-helicity [nu-tau-helicity] in T-lepton [tau-lepton] Decays with the L3 Detector at LEP PDF Online Free](https://books.google.com/books/content/images/frontcover/___2GwAACAAJ?fife=w200-h370)
Author : Pavel Anatolievitch Kapinos
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ISBN 13 :
Total Pages : 134 pages
Book Rating : 4.:/5 (757 download)
Download or read book A Measurement of the Michel Parameters and Nt-helicity [nu-tau-helicity] in T-lepton [tau-lepton] Decays with the L3 Detector at LEP written by Pavel Anatolievitch Kapinos and published by . This book was released on 1996 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David J. Winn
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ISBN 13 :
Total Pages : 204 pages
Book Rating : 4.3/5 (91 download)
Download or read book Measurement of the Helicity of W Bosons in Top Quark Decays written by David J. Winn and published by . This book was released on 2000 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : S. Bentvelsen
Publisher : Elsevier
ISBN 13 : 0444599169
Total Pages : 1004 pages
Book Rating : 4.4/5 (445 download)
Download or read book Proceedings of the 31st International Conference on High Energy Physics ICHEP 2002 written by S. Bentvelsen and published by Elsevier. This book was released on 2012-12-02 with total page 1004 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first precision measurements on CP violation in the B system are reported. Both the BELLE and the BABAR collaboration presented, among others, results for sin 2ß with much improved accuracy. Results from the Sudbury Neutrino Observatory, SNO, also deserve to be mentioned. The convincing evidence of solar neutrino oscillations had been presented by SNO prior to the conference; a full presentation was given at the conference. An incredibly precise measurement of the anomalous magnetic moment of the muon is reported, a fresh result from the Brookhaven National Laboratory. Apart from these distinct physics highlights, there are also the first results from the new Tevatron run and from the relativistic heavy ion collider RHIC. Theorists write of our ever better understanding of the Standard Model and of what might lie beyond. Risky as it is to highlight only a couple of exciting subjects, it is merely meantto whet the appetite for further reading.
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ISBN 13 :
Total Pages : 640 pages
Book Rating : 4.3/5 (91 download)
Download or read book INIS Atomindex written by and published by . This book was released on 1995 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt:
