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Asymmetries In W And Z0 Gamma Production At The Tevatron
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Book Synopsis Asymmetries in W^+/- and Z^0/gamma^* Production at the Tevatron by : E. Halkiadakis
Download or read book Asymmetries in W^+/- and Z^0/gamma^* Production at the Tevatron written by E. Halkiadakis and published by . This book was released on 2004 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors describe a measurement of the charge asymmetry of electrons from W{sup {+-}} boson decays using p{bar p} {yields} W {yields} e{nu} events. They also present a measurement of the forward-backward charge asymmetry of electron-positron pairs resulting from the process p{bar p} {yields} Z{sup 0}/{gamma}* {yields} e{sup +}e{sup -}, from which they extract the Z{sup 0}-quark and Z{sup 0}-electron coupling constants and measure the sensitivity of the CDF experiment to these couplings. These analyses use integrated luminosities of 170 pb{sup -1} and 72 pb{sup -1}, respectively, of data collected by the CDF Run II detector at the Fermilab Tevatron.
Book Synopsis W & Z Production and Asymmetries at the Tevatron by :
Download or read book W & Z Production and Asymmetries at the Tevatron written by and published by . This book was released on 2006 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: An overview of W and Z production in high energy hadron collisions is given. W and Z cross section and asymmetry measurements from CDF and D0 are described, with particular emphasis on recent results. The current status of precision W mass and width measurements is reported. The fundamental physics parameters that can be extracted from these measurements are described, and the relevance of W and Z production studies for the LHC is pointed out.
Book Synopsis Profil ou nouvelle description de la ville maritime port et havre de Dunquerque, au comté de Flandre by :
Download or read book Profil ou nouvelle description de la ville maritime port et havre de Dunquerque, au comté de Flandre written by and published by . This book was released on with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Z Boson Asymmetry Measurements at the Tevatron by :
Download or read book Z Boson Asymmetry Measurements at the Tevatron written by and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present measurements of the forward-backward asymmetry (A_fb) in dilepton pair decays of Z bosons produced in ppbar collisions using the full Tevatron dataset. The CDF experiment extracts a value for the effective weak mixing angle parameter sin^{2}\theta^{l}_{eff} of 0.2315 +/- 0.0010 from the A_fb distribution of dimuon events in 9.2 fb^{-1} of integrated luminosity. From dielectron events in 9.7 fb^{-1} of data, the D0 experiment finds sin^{2}\theta^{l}_{eff} = 0.23106 +/- 0.00053, the world's most precise measurement of sin^{2}\theta^{l}_{eff} from hadron colliders and with light quark couplings.
Book Synopsis Single $W$ and $Z$ Production, Asymmetry, and $V+$ Jets at the Tevatron by :
Download or read book Single $W$ and $Z$ Production, Asymmetry, and $V+$ Jets at the Tevatron written by and published by . This book was released on 2013 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Review of W and Z Production at the Tevatron by :
Download or read book Review of W and Z Production at the Tevatron written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The CDF and D0 collaborations have used recent data taken at the Tevatron to perform QCD tests with W and Z bosons decaying leptonically. D0 measures the production cross section times branching ratio for W and Z bosons. This also gives an indirect measurement of the total width of the W boson: [Lambda][sub W] = 2.126 [+-] 0.092 GeV. CDF reports on a direct measurement of [Lambda][sub W] = 2.19 [+-] 0.19 GeV, in good agreement with the indirect determination and Standard Model predictions. D0's measurement of the differential d[sigma]/dp[sub T] distribution for W and Z bosons decaying to electrons agrees with the combined QCD perturbative and resummation calculations. In addition, the d[sigma]/dp[sub T] distribution for the Z boson discriminates between different vector boson production models. Studies of W + Jet production at CDF find the NLO QCD prediction for the production rate of W + [ge] 1 Jet events to be in good agreement with the data.
Book Synopsis Production of W and Z Bosons at the Tevatron by :
Download or read book Production of W and Z Bosons at the Tevatron written by and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present recent results on measurements of the transverse momentum distribution of W and Z bosons, the angular distribution of electrons from W decays, and on color coherence effects in W+jets events from p{bar p} collisions at (square root)s = 1.8 TeV at the Fermilab Tevatron Collider. The data are compared to perturbative QCD calculations.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Asymmetries at the Tevatron written by and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this report, we summarize the latest results of the top-quark pair production asymmetry and present the new result of bottom-quark pair production asymmetry. By looking at the results obtained by the CDF experiment, one can see a discrepancy in both $t\bar{t}$ inclusive and lepton-based measurements. The D0 results of the $t\bar{t}$ production asymmetry are compatible with the standard-model predictions as well as with the CDF results. The CDF measurement of $b\bar{b}$ production asymmetry presents consistency with both zero and with the standard-model predictions.
Book Synopsis Electroweak Results from the Tevatron by :
Download or read book Electroweak Results from the Tevatron written by and published by . This book was released on 1995 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results from the CDF and D{O} experiments are presented on properties of the W" and Z° gauge bosons using final states containing electrons and muons based on large integrated luminosities. In particular, measurements of the W" and Z° production cross sections, the W-charge asymmetry and the CDF measurement of the W-mass are summarized. Gauge boson self interactions axe measured by studying di-gauge boson production and limits on anomalous gauge boson couplings axe discussed.
Book Synopsis סדר הגדה של פסח עם שמונים פירושים... by :
Download or read book סדר הגדה של פסח עם שמונים פירושים... written by and published by . This book was released on 1923 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Production of Gauge Bosons at the Tevatron by :
Download or read book Production of Gauge Bosons at the Tevatron written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The CDF and D0 collaborations have used recent data taken at the Tevatron to perform QCD tests with W and Z bosons decaying leptonically. D0 measures the production cross section times branching ratio for W and Z bosons and determines the branching ratio B(W[yields] l[nu])= (10.43[+-] 0.44)% (l= e, [mu]). This also gives an indirect measurement of the total width of the W boson:[Gamma][sub W]= 2.16[+-] 0.09 GeV. The W cross section times branching ratio into tau leptons is measured to be[sigma]([anti p]p[yields] W+ X)B(W[yields][tau][nu])= 2.38[+-]0.13 nb, from which the ratio of the coupling constants is determined: g[sub[tau]][sup W]/g[sub e][sup W]= 1.004[+-] 0.019[+-] 0.026. D0's measurement of the differential d[sigma]/dP[sub T] distribution for the Z boson decaying to electrons, discriminates between different phenomenologic vector boson production models. CDF measures the cross section for the Drell-Yan continuum, and extracts improved limits on compositeness scales for quarks and leptons of[Lambda][sub ql][approximately] 3 - 6 TeV, depending on the model. Studies of W+ Jet production at CDF and D0 find that the QCD prediction underestimates the production rate of W+ 1 Jet events by about a factor of 2 as measured by both collaborations.
Book Synopsis W and Z Production at the Tevatron by : Michiel P. Sanders
Download or read book W and Z Production at the Tevatron written by Michiel P. Sanders and published by . This book was released on 2006 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this paper, recent experimental results on W and Z boson production at the Tevatron are described. These results not only provide tests of the standard model, but are also sensitive to proton parton distribution functions.
Book Synopsis The Standard Model and Beyond by : Paul Langacker
Download or read book The Standard Model and Beyond written by Paul Langacker and published by CRC Press. This book was released on 2017-06-26 with total page 786 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition of The Standard Model and Beyond presents an advanced introduction to the physics and formalism of the standard model and other non-abelian gauge theories. It provides a solid background for understanding supersymmetry, string theory, extra dimensions, dynamical symmetry breaking, and cosmology. In addition to updating all of the experimental and phenomenological results from the first edition, it contains a new chapter on collider physics; expanded discussions of Higgs, neutrino, and dark matter physics; and many new problems. The book first reviews calculational techniques in field theory and the status of quantum electrodynamics. It then focuses on global and local symmetries and the construction of non-abelian gauge theories. The structure and tests of quantum chromodynamics, collider physics, the electroweak interactions and theory, and the physics of neutrino mass and mixing are thoroughly explored. The final chapter discusses the motivations for extending the standard model and examines supersymmetry, extended gauge groups, and grand unification. Thoroughly covering gauge field theories, symmetries, and topics beyond the standard model, this text equips readers with the tools to understand the structure and phenomenological consequences of the standard model, to construct extensions, and to perform calculations at tree level. It establishes the necessary background for readers to carry out more advanced research in particle physics. Supplementary materials are provided on the author’s website and a solutions manual is available for qualifying instructors.
Book Synopsis Diffractive W and Z Production at the Fermilab Tevatron by :
Download or read book Diffractive W and Z Production at the Fermilab Tevatron written by and published by . This book was released on 2010 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: We report on a measurement of the fraction of events with a W or Z boson produced diffractively in {bar p}p collisions at √s = 1.96 TeV, using data from 0.6 fb−1 of integrated luminosity collected with the CDF II detector equipped with a Roman-pot spectrometer that detects the {bar p} from {bar p} + p → {bar p}+[X+W/Z]. We find that (0.97 ± 0.11)% of Ws and (0.85 ± 0.22)% of Zs are produced diffractively in a region of (anti)proton fractional momentum loss [zeta] of 0.03
Download or read book Tevatron Results written by R. Lefevre and published by . This book was released on 2005 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent results obtained by the CDF and D0 experiments at the Tevatron Run II are presented. A first part is dedicated to QCD physics where inclusive jet production, dijet azimuthal decorrelations and jet shapes measurements are reported. Electroweak physics is then discussed relating measurements of the W and Z bosons productions, of the forward-backward charge asymmetry in W production, of the W width and of the top quarks mass. The extensive Run II exploration program is finally approached reporting about searches for neutral supersymmetric Higgs bosons in multijet events and for sbottom quark from gluino decays.
Book Synopsis Associated Production of W + Charm in 13 TeV Proton-Proton Collisions Measured with CMS and Determination of the Strange Quark Content of the Proton by : Svenja Karen Pflitsch
Download or read book Associated Production of W + Charm in 13 TeV Proton-Proton Collisions Measured with CMS and Determination of the Strange Quark Content of the Proton written by Svenja Karen Pflitsch and published by Springer Nature. This book was released on 2020-08-18 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: The associated production of a W boson and a single charm quark (W+c) is the only process in proton-proton collisions that directly probes the strange quark content of the proton. In this thesis, W+charm production is measured in proton-proton collisions at the LHC at 13 TeV, as recorded by the Compact Muon Solenoid (CMS) experiment. The analysis focuses on the identification of W bosons in their leptonic decay to a muon and a neutrino and charm quarks are tagged via the full reconstruction of D*-Mesons. The measured cross sections of W+c production are used, in combination with other relevant CMS results and the most precise HERA DIS data, in a QCD analysis to determine the strange quark content of the proton. The resulting strange quark distribution and suppression, with respect to the other light sea quarks, are in good agreement with those obtained in neutrino scattering experiments and extend their kinematic reach.
