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Measurement Of The W Boson Production Charge Asymmetry In Ppu00afu2192w Xu2192e X Events At S
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Book Synopsis Measurement of the W Boson Production Charge Asymmetry in Pp{u00AF}{u2192}W+X{u2192}e?+X Events at S by :
Download or read book Measurement of the W Boson Production Charge Asymmetry in Pp{u00AF}{u2192}W+X{u2192}e?+X Events at S 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 a measurement of the W boson production charge asymmetry in p$ar{p}$→W+X→e?+X events at a center of mass energy of 1.96 TeV, using 9.7 fb-1 of integrated luminosity collected with the D0 detector at the Fermilab Tevatron Collider. The neutrino longitudinal momentum is determined by using a neutrino weighting method, and the asymmetry is measured as a function of the W boson rapidity. The measurement extends over wider electron pseudorapidity region than previous results and is the most precise to date, allowing for precise determination of proton parton distribution functions in global fits.
Book Synopsis Measurement of the W Boson Production Charge Asymmetry in Pp̄ Collisions by : Bo-Young Han
Download or read book Measurement of the W Boson Production Charge Asymmetry in Pp̄ Collisions written by Bo-Young Han and published by . This book was released on 2008 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the W Boson Production Charge Asymmetry in P Pbar Collisions by :
Download or read book Measurement of the W Boson Production Charge Asymmetry in P Pbar Collisions written by and published by . This book was released on 2008 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a measurement of the W boson production charge asymmetry using the W → e[nu] decay channel. We use data collected the Collider Detector at Fermilab (CDF) from p{bar p} collisions at √s = 1.96 TeV. The data were collected up to February 2006 (Run II) and represent an integrated luminosity of 1 fb−1. The experimental measurement of W production charge asymmetry is compared to higher order QCD predictions generated using MRST2006 and CTEQ6 parton distribution functions (PDF). The asymmetry provides new input on the momentum fraction dependence of the u and d quark parton distribution functions (PDF) within the proton over the fraction of proton's momentum range from 0.002
Book Synopsis Direct Measurement of the W Production Charge Asymmetry in P Anti-p Collisions at S**1/2 by :
Download or read book Direct Measurement of the W Production Charge Asymmetry in P Anti-p Collisions at S**1/2 written by and published by . This book was released on 2009 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present the first direct measurement of the W production charge asymmetry as a function of the W boson rapidity y{sub W} in p{bar p} collisions at √s = 1.96 TeV. We use a sample of W → e[nu] events in data from 1 fb−1 of integrated luminosity collected using the CDF II detector. In the region
Book Synopsis Measurement of the Muon Charge Asymmetry in Inclusive W Boson Production at 7 TeV with CMS Detector by : Aleko Khukhunaishvili
Download or read book Measurement of the Muon Charge Asymmetry in Inclusive W Boson Production at 7 TeV with CMS Detector written by Aleko Khukhunaishvili and published by . This book was released on 2014 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis describes a precise measurement of the muon charge asymmetry in inclusive pp [RIGHTWARDS ARROW] W + X production at the center of mass energy of s = 7 TeV of colliding protons. The data sample was collected with the Compact Muon Solenoid detector at the Large Hadron Collider and corresponds to an integrated luminosity of 4.7 fb[-]1 . The measurement was performed in 11 bins of the muon pseudorapidity within [eta] 2.4 range and for two thresholds on its transverse momentum: pT 25 GeV and pT> 35 GeV. Precise measurement of the muon charge asymmetry provides an important test for the Standard Model physics. Thanks to the large data sample, containing more than 20 million W [RIGHTWARDS ARROW] [MICRO SIGN][nu] events, statistical precision is greatly improved compared with the previous lepton charge asymmetry results at the LHC. Total absolute uncertainty on the charge asymmetry varies within 0.2% [-] 0.4% in different muon pseudorapidity bins. The result provides significant constraints on the parton distribution functions of the proton in the Bjorken-x range from 0.001 to 0.1.
Book Synopsis The Charge Asymmetry in $W$ Boson Production in $p\bar P$ Collisions at the $\sqrt{s} by :
Download or read book The Charge Asymmetry in $W$ Boson Production in $p\bar P$ Collisions at the $\sqrt{s} written by and published by . This book was released on 2009 with total page 203 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a measurement of the W boson charge asymmetry in p $\bar{p}$ collisions using W →ev decays using 750 pb-1 of data collected with the D detector at the Fermilab Tevatron. The electron coverage is extended to.
Book Synopsis Measurement of the W Boson Production Charge Asymmetry in P$\bar{p}$ Collisions by :
Download or read book Measurement of the W Boson Production Charge Asymmetry in P$\bar{p}$ Collisions written by and published by . This book was released on 2008 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a measurement of the W boson production charge asymmetry using the W → ev decay channel. We use data collected the Collider Detector at Fermilab (CDF) from p$ar{p}$ collisions at √s = 1.96 TeV. The data were collected up to February 2006 (Run II) and represent an integrated luminosity of 1 fb-1. The experimental measurement of W production charge asymmetry is compared to higher order QCD predictions generated using MRST2006 and CTEQ6 parton distribution functions (PDF). The asymmetry provides new input on the momentum fraction dependence of the u and d quark parton distribution functions (PDF) within the proton over the fraction of proton's momentum range from 0.002 x 0.8 corresponding to -3.0 ysubW/sub 3.0 at Qsup2/sup ̃M
Book Synopsis A Measurement of the W Boson Charge Asymmetry with the ATLAS Detector by : Samuel Robert Whitehead
Download or read book A Measurement of the W Boson Charge Asymmetry with the ATLAS Detector written by Samuel Robert Whitehead and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Uncertainties on the parton distribution functions (PDFs), in particular those of the valence quarks, can be constrained at LHC energies using the charge asymmetry in the production of W± bosons. This thesis presents a measurement of the electron channel, lepton charge asymmetry using 497 pb-1 of data recorded with the ATLAS detector in 2011. The measurement is included in PDF fits using the machinery of HERAPDF and is found to have some constraining power beyond that of existing W charge asymmetry measurements.
Book Synopsis A Study of W Boson Decay Charge Asymmetry Using Hadronic Tau Decays in Proton - Anti-proton Collisions at {u221A}s by :
Download or read book A Study of W Boson Decay Charge Asymmetry Using Hadronic Tau Decays in Proton - Anti-proton Collisions at {u221A}s written by and published by . This book was released on 1998 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation presents a measurement of the tau charge asymmetry in events where the taus are produced by W decays. This charge asymmetry appears as different rapidity distributions for positive and negative taus. Two competing effects generate tau charge asymmetry. The production mechanism for the W gauge boson generates a charge asymmetry which is a function of the ratio of parton distribution functions, d(x)=u(x), measured at x ̃MW/√s. This is the dominant effect for tau charge asymmetry at small rapidity. At higher rapidity, however, the competing charge asymmetry from parity violation in W decay to taus becomes dominant. This tau asymmetry measurement is consistent with the Standard Model with a x2 per degree of freedom equal to 2.5 for 4 degrees of freedom when the asymmetry measurement is folded about y = 0, taking advantage of the CP symmetry of the underlying physics, and 8.9 for 8 degrees of freedom when it is not. This measurement introduces some methods and variables of interest to future analyses using hadronic decay modes of taus. This work was done using the CDF detector in $ar{p}$p collisions at √s = 1.8 TeV at Fermilab's Tevatron accelerator.
Book Synopsis A Study of W Boson Decay Charge Asymmetry Using Hadronic Tau Decays in Proton - Anti-proton Collisions at (square Root)s by :
Download or read book A Study of W Boson Decay Charge Asymmetry Using Hadronic Tau Decays in Proton - Anti-proton Collisions at (square Root)s written by and published by . This book was released on 2002 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation presents a measurement of the tau charge asymmetry in events where the taus are produced by W decays. This charge asymmetry appears as different rapidity distributions for positive and negative taus. Two competing effects generate tau charge asymmetry. The production mechanism for the W gauge boson generates a charge asymmetry which is a function of the ratio of parton distribution functions, d(x)=u(x), measured at x (almost equal to) M{sub W}/(square root)s. This is the dominant effect for tau charge asymmetry at small rapidity. At higher rapidity, however, the competing charge asymmetry from parity violation in W decay to taus becomes dominant. This tau asymmetry measurement is consistent with the Standard Model with a x2 per degree of freedom equal to 2.5 for 4 degrees of freedom when the asymmetry measurement is folded about y = 0, taking advantage of the CP symmetry of the underlying physics, and 8.9 for 8 degrees of freedom when it is not. This measurement introduces some methods and variables of interest to future analyses using hadronic decay modes of taus. This work was done using the CDF detector in {bar p}p collisions at (square root) = 1.8 TeV at Fermilab's Tevatron accelerator.
Book Synopsis Measurement of the Differential Production Cross-section of W Bosons and Charge Asymmetry √s by : Dimitra Tsionou
Download or read book Measurement of the Differential Production Cross-section of W Bosons and Charge Asymmetry √s written by Dimitra Tsionou and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the Differential Production Cross Section of W Bosons and Charge Asymmetry at √s by : Dimitra Tsionou
Download or read book Measurement of the Differential Production Cross Section of W Bosons and Charge Asymmetry at √s written by Dimitra Tsionou and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the Charge of Asymmetry of W Bosons Produced in Pp Collisions at SQRT(S) by : Verena Ingrid Martinez Outschoorn
Download or read book Measurement of the Charge of Asymmetry of W Bosons Produced in Pp Collisions at SQRT(S) written by Verena Ingrid Martinez Outschoorn and published by . This book was released on 2011 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the W Charge Asymmetry in the pp Collisions at {u221A}s by :
Download or read book Measurement of the W Charge Asymmetry in the pp Collisions at {u221A}s written by and published by . This book was released on 2011 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: This letter reports a measurement of the muon charge asymmetry from W Boson produced in proton-proton collisions at a centre-of-mass energy of 7 TeV with the ATLAS experiment at the LHC. The asymmetry is measured in the W → ?? decay mode as a function of the muon pseudorapidity using a data sample corresponding to a total integrated luminosity of 31 pb-1. The results are compared to predictions based on next-to-leading order calculations with various parton distribution functions. The measurement provides information on the u and d quark momentum fractions in the proton.
Book Synopsis Measurement of the W Boson Production Asymmetry and W Boson Width at CDF. by :
Download or read book Measurement of the W Boson Production Asymmetry and W Boson Width at CDF. written by and published by . This book was released on 1998 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: We describe two measurements using 110 ± 7 pb−1 of data collected by the CDF detector during 1992-95. The first is a new measurement of the charge asymmetry in the lepton rapidity range 0
Book Synopsis Measurement of the W Charge Asymmetry in the Pp Collisions at [arrow]" by :
Download or read book Measurement of the W Charge Asymmetry in the Pp Collisions at [arrow]" written by and published by . This book was released on 2011 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: This letter reports a measurement of the muon charge asymmetry from W Boson produced in proton-proton collisions at a centre-of-mass energy of 7 TeV with the ATLAS experiment at the LHC. The asymmetry is measured in the W → [mu][nu] decay mode as a function of the muon pseudorapidity using a data sample corresponding to a total integrated luminosity of 31 pb-1. The results are compared to predictions based on next-to-leading order calculations with various parton distribution functions. The measurement provides information on the u and d quark momentum fractions in the proton.
Book Synopsis The Charge Asymmetry in W Bosons Produced in P Anti-p Collisions at Center of Mass Energy - 1.96 TeV. by : Julie M. Torborg
Download or read book The Charge Asymmetry in W Bosons Produced in P Anti-p Collisions at Center of Mass Energy - 1.96 TeV. written by Julie M. Torborg and published by . This book was released on 2005 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: The primary mode of production of W{sup +} bosons in a p{bar p} collider is u + {bar d} {yields} W{sup +}. The u quark generally carries more momentum than the {bar d} and the resultant W{sup +} tends to be boosted in the proton direction. Similarly, W bosons are boosted in the anti-proton direction. This is observed as an asymmetry in the rapidity distributions of positive and negative W bosons. Measurement of this asymmetry serves as a probe of the momentum distribution of partons within the proton. These distributions are required as input to the calculation of every p{bar p} production cross section. This thesis presents the first measurement at D0 of the charge asymmetry of the W boson production cross section as measured in W {yields} ev decays in 0.3 fb{sup -1} of p{bar p} collisions collected with the D0 Detector. Theoretical predictions made using the CTEQ6.1M and MRST(2004) parton distribution functions are compared with the measurement.
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