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Measurement Of W And Z Production Cross Sections In Pbar P Collisions At Radicals
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Book Synopsis Measurement of W and Z Production Cross-sections in P[bar P] Collisions at [radical] by :
Download or read book Measurement of W and Z Production Cross-sections in P[bar P] Collisions at [radical] written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The cross sections for W and Z production in p[bar p] collisions at [radical]s = 1.8 TeV are measured using the D0 detector at the Fermilab Tevatron collider. The detected final states are W [yields] ev[sub e], Z [yields] e[sup +]e[sup [minus]], W [yields] [mu]v[sub [mu]], and Z [yields] [mu][sup +][mu][sup [minus]]. In the ratio of these measurements, many common sources of systematic error cancel and we measure R = [sigma], (p[bar p] [yields] W) [center-dot] Br(W [yields] lv)/ [sigma], (p[bar p] [yields] Z) [center-dot] Br(Z [yields] l[sup +]l[sup [minus]]). Assuming standard model couplings, this result is used to determine the width of the W bosom and to set a limit on the decay W[sup +] [yields] t[bar b].
Book Synopsis Measurement of W and Z Production Cross-sections in Pbar P Collisions at Radicals by :
Download or read book Measurement of W and Z Production Cross-sections in Pbar P Collisions at Radicals written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the W and Z Boson Production Cross Sections in P[anti P] Collisions At[radical] by :
Download or read book Measurement of the W and Z Boson Production Cross Sections in P[anti P] Collisions At[radical] written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis reports on the measurement of the W and Z boson inclusive production cross sections ([sigma][sub W] and[sigma][sub Z]) times electronic branching ratios (Br(W[r-arrow] e[nu]) and Br(Z[r-arrow] ee)) in p[anti p] collisions at[radical]s= 1.8 TeV. The analysis is based on 12.8 pb[sup[minus]1] of data taken in the 1992--1993 run by the D0 detector at the Fermilab Tevatron collider; the cross sections were measured to be:[sigma][sub W][center-dot] Br(W[r-arrow] e[nu])= 2.36[+-] 0.02[+-] 0.07[+-] 0.13 nb and[sigma][sub Z][center-dot] Br(Z[r-arrow] ee)= 0.218[+-] 0.008[+-] 0.008[+-] 0.012 nb. The first error is statistical, the second error represents the non-luminosity systematic error, and the third error shows the uncertainty in the luminosity determination. Future prospects for similar measurements based on larger samples of data are discussed.
Book Synopsis Measurement of the W and Z Boson Production Cross Sections in P{anti P} Collisions at {radical}s by :
Download or read book Measurement of the W and Z Boson Production Cross Sections in P{anti P} Collisions at {radical}s written by and published by . This book was released on 1997 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis reports on the measurement of the W and Z boson inclusive production cross sections (?{sub W} and?{sub Z}) times electronic branching ratios (Br(W → e?) and Br(Z → ee)) in p{anti p} collisions at √s = 1.8 TeV. The analysis is based on 12.8 pb{sup −1} of data taken in the 1992--1993 run by the D0 detector at the Fermilab Tevatron collider; the cross sections were measured to be:?{sub W} · Br(W → e?) = 2.36 ± 0.02 ± 0.07 ± 0.13 nb and?{sub Z} · Br(Z → ee) = 0.218 ± 0.008 ± 0.008 ± 0.012 nb. The first error is statistical, the second error represents the non-luminosity systematic error, and the third error shows the uncertainty in the luminosity determination. Future prospects for similar measurements based on larger samples of data are discussed.
Book Synopsis Measurement of the W and Z Boson Production Cross Sections in P, P̄ Collisions at [square Root Sign]s by : Peter Matthew Grudberg
Download or read book Measurement of the W and Z Boson Production Cross Sections in P, P̄ Collisions at [square Root Sign]s written by Peter Matthew Grudberg and published by . This book was released on 1997 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of W and Z Boson Production Cross Sections in Proton-proton Collisions at [square Root] S by : Stephanie Akemi Brandt
Download or read book Measurement of W and Z Boson Production Cross Sections in Proton-proton Collisions at [square Root] S written by Stephanie Akemi Brandt and published by . This book was released on 2020 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of W and Z boson production cross sections in pp collisions at [square root] s = 5.02TeV and [square root] s = 13TeV are presented. Data was collected by the CMS experiment at the LHC during low-pileup data taking periods in 2017. The corresponding integrated luminosity for the data is 299.1 ± 5 pb−1 ( [square root] s = 5.02TeV) and 199.3 ± 4 pb−1 ( [square root] s = 13TeV), with an average number of pile-up interactions [[mu] = 3 ([mu] = 2). Cross sections and cross section ratios are reported, with final states in electron and muon channels.
Book Synopsis Extraction of the Width of the W Boson from a Measurement of the Ratio of the W and Z Cross Sections by :
Download or read book Extraction of the Width of the W Boson from a Measurement of the Ratio of the W and Z Cross Sections written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation reports on measurements of inclusive cross sections times branching fractions into electrons for W and Z bosons produced in p[anti p] collisions at[radical]s= 1.8 TeV. From an integrated luminosity of 84.5 pb[sup[minus]1] recorded in 1994--1995 by the D0 detector at the Fermilab Tevatron[Lambda] the cross sections are measured to be[sigma]p[anti p][r-arrow] W+ X[center-dot] B(W[r-arrow] e[nu])= 2,310[+-] 10 (stat)[+-] 50 (Syst)[+-] 100 (lum) pb and[sigma](p[anti p][r-arrow] Z+ X)[center-dot] B(Z[r-arrow] ee)= 221[+-] 3 (stat)[+-] 4 (Syst)[+-] 10 (lum) pb. The cross section ratio R is determined to be[sigma](p[anti p][r-arrow] W+ X)[center-dot] B(W[r-arrow] e[nu])/[sigma](p[bar p][r-arrow] Z+ X)[center-dot] B(Z[r-arrow] ee)= 10.43[+-] 0.15 (stat)[+-] 0.20 (syst)[+-] 0.10 (NLO)[Lambda] and R is used to determine B(W[r-arrow] e[nu])= 0.1044[+-] 0.0015 (stat)[+-] 0.0020 (syst)[+-] 0.0017 (theory)[+-] 0.0010 (NLO)[Lambda] and[Lambda][sub W]= 2.169[+-] 0.031 (stat)[+-] 0.042 (syst)[+-] 0.041 (theory)[+-] 0.022 (NLO) GeV. The latter is used to set a 95% confidence level upper limit on the partial decay width of the W boson into non-standard model final states[Lambda][Lambda][sub W][sup inv][Lambda] of 0.213 GeV.
Book Synopsis Z + Cross-section Measurement, Ơ*BR(Z + Gamma), in the Electron Channel for Pbar P Collisions at Radicals by :
Download or read book Z + Cross-section Measurement, Ơ*BR(Z + Gamma), in the Electron Channel for Pbar P Collisions at Radicals written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Diboson Production Cross-sections at Square Root S by :
Download or read book Diboson Production Cross-sections at Square Root S written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent results of W[gamma], Z[gamma] and WW cross-section measurements in the electron and muon channels are reported from p[bar p] collisions at [radical]s = 1.96 TeV recorded by the CDF and D0 collaborations. Total cross-sections and kinematic distributions are found to be consistent with Standard Model expectations.
Book Synopsis Measurement of the Inclusive W and Z Production Cross Sections in Pp Collisions at $ \sqrt {s} by :
Download or read book Measurement of the Inclusive W and Z Production Cross Sections in Pp Collisions at $ \sqrt {s} written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A measurement of inclusive W and Z production cross sections in pp collisions at sqrt(s)=7 TeV is presented. The electron and muon decay channels are analyzed in a data sample collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 36 inverse picobarns. The measured inclusive cross sections are sigma(pp-> WX) B(W-> l nu) = 10.30 +/- 0.02 (stat.) +/- 0.10 (syst.) +/- 0.10 (th.) +/- 0.41 (lumi.) nb and sigma(pp -> ZX) B(Z-> l+̂l-̂) = 0.974 +/- 0.007 (stat.) +/- 0.007 (syst.) +/- 0.018 (th.) +/- 0.039 (lumi.) nb, limited to the dilepton invariant mass range 60 to 120 GeV. The luminosity-independent cross section ratios are [sigma(pp->WX) B(W-> l nu)]/[sigma(pp-> ZX) B(Z->l+̂l-̂)] = 10.54 +/- 0.07 (stat.) +/- 0.08 (syst.) +/- 0.16 (th.) and [sigma(pp->W+̂X) B(W+̂ -> l+̂nu)] / [sigma(pp->W-̂ X) B(W-̂ -> l-̂ nu)] = 1.421 +/- 0.006 (stat.) +/- 0.014 (syst.) +/- 0.029 (th.). The measured values agree with next-to-next-to-leading order QCD cross section calculations based on recent parton distribution functions.
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 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the Total W- and Z-boson Production Cross Sections in Pp Collisions at 2.76 TeV with the ATLAS Detector by : Ksenia Gasnikova
Download or read book Measurement of the Total W- and Z-boson Production Cross Sections in Pp Collisions at 2.76 TeV with the ATLAS Detector written by Ksenia Gasnikova and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the W and Z Cross Sections in the Electron Channel for P Anti-p Collisions at S**(1/2) by : John Michael Gardner
Download or read book Measurement of the W and Z Cross Sections in the Electron Channel for P Anti-p Collisions at S**(1/2) written by John Michael Gardner and published by . This book was released on 2005 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation presents measurements of the inclusive production cross sections for W and Z gauge bosons decaying through the electron channel with p{bar p} collisions at a center-of-mass energy of 1.96 TeV. The ratio of these cross sections is then used to extract the W total width. The Standard Model (SM) of electroweak and strong interactions is a collection of theories which together encompass what is currently known about the elementary particles that make up matter and the forces through which they interact. Experimentalists are constantly searching for violations of the Standard Model by making precision measurements of predicted interactions. The decay of the W boson is one such interaction. The rate of its decay is reflected in its width which is predicted to high precision using Standard Model-based calculations. Therefore, a high precision experimental width measurement would be very sensitive to any such violation. In principle the W and Z boson production cross sections could also be good Standard Model tests. However, a precise knowledge of integrated luminosity is required which is unfortunately difficult to obtain at the Tevatron. In fact, the W and Z cross section results can be used to obtain a more precise luminosity measurement. The data set consists of a total integrated luminosity of 177 pb{sup -1} collected from September 2002 to September 2003 using the D0 detector at Fermilab.
Book Synopsis Measurement of W± and Z-boson Production Cross Sections in Pp Collisions at [mml] by :
Download or read book Measurement of W± and Z-boson Production Cross Sections in Pp Collisions at [mml] written by and published by . This book was released on 2016 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: Measurements of the W± → l±[nu] and Z → l+l- production cross sections (where l± = e±, [mu]± ) in proton-proton collisions at √s = 13 TeV are presented using data recorded by the ATLAS experiment at the Large Hadron Collider, corresponding to a total integrated luminosity of 81 pb-1. The total inclusive W±-boson production cross sections times the single-lepton-flavour branching ratios are [sigma]Wtot+ =11.83 ± 0.02 (stat)±0.32 (sys)±0.25 (lumi) nb and [sigma]W-tot=8.79±0.02 (stat)±0.24 (sys)±0.18 (lumi) nb for W+ and W- , respectively.
Book Synopsis Measurement of Inclusive W and Z Boson Production Cross Sections in Pp Collisions at $\sqrt{s}$ by :
Download or read book Measurement of Inclusive W and Z Boson Production Cross Sections in Pp Collisions at $\sqrt{s}$ written by and published by . This book was released on 2014 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wild, gewild, gevild written by and published by . This book was released on 1983 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of the Total W- and Z-boson Production Cross Sections in Pp Collisions at √s by : Ksenia Gasnikova
Download or read book Measurement of the Total W- and Z-boson Production Cross Sections in Pp Collisions at √s written by Ksenia Gasnikova and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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