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Measurement Of Sin2theta Rm Effell And Z Light Quark Couplings Using The Forward Backward Charge Asymmetry In Pbarp To Z Gamma To E E Events With Cal L
Download Measurement Of Sin2theta Rm Effell And Z Light Quark Couplings Using The Forward Backward Charge Asymmetry In Pbarp To Z Gamma To E E Events With Cal L full books in PDF, epub, and Kindle. Read online Measurement Of Sin2theta Rm Effell And Z Light Quark Couplings Using The Forward Backward Charge Asymmetry In Pbarp To Z Gamma To E E Events With Cal L ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Measurement of $\sin^2\theta_{\rm Eff}^{\ell}$ and $Z$-light Quark Couplings Using the Forward-backward Charge Asymmetry in $p\bar{p} \to Z/\gamma^{*} \to E^{+}e^{-}$ Events with ${\cal L} by :
Download or read book Measurement of $\sin^2\theta_{\rm Eff}^{\ell}$ and $Z$-light Quark Couplings Using the Forward-backward Charge Asymmetry in $p\bar{p} \to Z/\gamma^{*} \to E^{+}e^{-}$ Events with ${\cal L} written by and published by . This book was released on 2011 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: We measure the mass dependence of the forward-backward charge asymmetry in 157,553 p{bar p} → Z/[gamma]* → e+e− interactions, corresponding to 5.0 fb−1 of integrated luminosity collected by the D0 experiment at the Fermilab Tevatron Collider at √s = 1.96 TeV. The effective weak mixing angle ([theta]{sub eff}{sup {ell}}) from this process involving predominantly the first generation of quarks is extracted as sin2 [theta]{sub eff}{sup {ell}} = 0.2309 ± 0.0008 (stat.) ± 0.0006 (syst.). We also present the most precise direct measurement of the vector and axial-vector couplings of u and d quarks to the Z boson.
Book Synopsis Measurement of Sin2 ?leff and Z-light Quark Couplings Using the Forward-backward Charge Asymmetry in Pp -> Z/gamma* -> E+e- Events with L by :
Download or read book Measurement of Sin2 ?leff and Z-light Quark Couplings Using the Forward-backward Charge Asymmetry in Pp -> Z/gamma* -> E+e- Events with L written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We measure the mass dependence of the forward-backward charge asymmetry in 157,553 pp = Z/?* = e+e- interactions, corresponding to 5.0 fb-1 of integrated luminosity collected by the D0 experiment at the Fermilab Tevatron Collider at √s = 1.96 TeV. The effective weak mixing angle (?leff) from this process involving predominantly the first generation of quarks is extracted as sin2 ?leff = 0.2309 ± 0.0008 (stat.) ± 0.0006 (syst.). We also present the most precise direct measurement of the vector and axial-vector couplings of u and d quarks to the Z boson.
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 A Preliminary Direct Measurement of the Parity-Violating Coupling of the Z° to Strange Quarks, A{sub S} by :
Download or read book A Preliminary Direct Measurement of the Parity-Violating Coupling of the Z° to Strange Quarks, A{sub S} written by and published by . This book was released on 1999 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present an updated direct measurement of the parity-violating coupling of the Z° to strange quarks, A{sub s}, derived from the full SLD data sample of approximately 550,000 hadronic decays of Z° bosons produced with a polarized electron beam and recorded by the SLD experiment at SLAC between 1993 and 1998. Z° → s{bar s} events are tagged by the presence in each event hemisphere of a high-momentum K{sup ±}, K{sub s} or [Lambda]°/{bar {Lambda}}° identified using the Cherenkov Ring Imaging Detector and/or a mass tag. The CCD vertex detector is used to suppress the background from heavy-flavor events. The strangeness of the tagged particle is used to sign the event thrust axis in the direction of the initial s quark. The coupling A{sub s} is obtained directly from a measurement of the left-right-forward-backward production asymmetry in polar angle of the tagged s quark. The background from u{bar u} and d{bar d} events is measured from the data, as is the analyzing power of the method for s{bar s} events. We measure: A{sub s} = 0.85 ± 0.06(stat.) {+-} 0.07(syst.)(preliminary).
Book Synopsis Measurement of the Polarized Forward-backward Asymmetry of Z° --] B{bar B} Using a Lifetime Tag and Momentum-weighted Track Charge by :
Download or read book Measurement of the Polarized Forward-backward Asymmetry of Z° --] B{bar B} Using a Lifetime Tag and Momentum-weighted Track Charge written by and published by . This book was released on 1995 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a direct measurement of the parity-violating parameter A{sub b} by analyzing the left-right forward-backward asymmetry of b quarks in ee− --> Z{sup o} --> b{bar b}. The SLD experiment observes hadronic decays of Z{sup o} bosons produced at resonance in collisions of longitudinally polarized electrons and unpolarized positrons at the SLC. Heavy flavor decays of the Z{sup o} are identified by taking advantage of the long lifetime of B hadrons, the small, stable SLC beam spot, and precise tracking from SLD. The asymmetry A{sub b} is measured with a self-calibrating technique employing momentum-weighted track charge from both hemispheres in the tagged events. From our 1994--1995 sample of 3.6 pb−1 of ee− annihilation data with a luminosity-weighted average e− polarization of 77.3%, and our 1993 sample of 1.8 pb−1 with a luminosity-weighted polarization of 63.1%, we obtain A{sub b}(preliminary) = 0.843 " 0.046(stat.) " 0.051(syst.).
Book Synopsis A Measurement of Sine(2)theta(W) from the Forward-backward Asymmetry in Proton-antiproton Going to Z Boson Positron-electron Interactions at Sqrt.s by : Peter Todd Hurst
Download or read book A Measurement of Sine(2)theta(W) from the Forward-backward Asymmetry in Proton-antiproton Going to Z Boson Positron-electron Interactions at Sqrt.s written by Peter Todd Hurst and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An analysis of the forward-backward asymmetry in Z$sp{0}$ decays using data from the Collider Detector at Fermilab provides a measurement of sin$sp2barthetasb{rm W}$. The forward-backward asymmetry is measured to be (5.2 $pm$ 5.9 (stat) $pm$ 0.4 (sys))%, which implies sin$sp2barthetasb{rm W}$ = 0.288$sbsp{-0.015}{+0.017}$ (stat) $pm$ 0.002 (sys), after QCD, QED, and weak corrections. When higher order weak corrections are included, the measured value of sin$sp2thetasb{rm W}$ is consistent with previous measurements over a broad range of top quark masses.
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