First Measurement of the Angular Coefficients of Drell-Yan $e^{+}{e}^{-}$ pairs in the Z Mass Region from $p\bar{p}$ Collisions at $\sqrt{s}$ = 1.96 TeV

Abstract

We report on the first measurement of the angular distributions of final state electrons in $p\bar{p}\to {\gamma }^{\ast }/Z\to e^{+}{e}^{-}+X$ events produced in the $Z$ boson mass region at $\sqrt{s}=1.96$ TeV. The data sample collected by the CDF II detector for this result corresponds to 2.1 fb${}^{-1}$ of integrated luminosity. The angular distributions are studied as a function of the transverse momentum of the electron-positron pair and show good agreement with the Lam-Tung relation, consistent with a spin-1 description of the gluon, and demonstrate that at high values of the transverse momentum, $Z$ bosons are produced via quark anti-quark annihilation and quark-gluon Compton processes.

arXiv commentsubmitted to Phys. Rev. Lett., FERMILAB-PUB-11-153-E

References in corpus (17)

• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• MadEvent: Automatic Event Generation with MadGraph
• Measurement of the J/Psi Meson and b-Hadron Production Cross Sections in ppbar Collisions at sqrt s = 1960 GeV
• Electroweak gauge boson production at hadron colliders through O(alpha_s^2)
• Higher Order Corrections to Jet Cross Sections in Hadron Colliders
• Tevatron Run-1 Z Boson Data and Collins-Soper-Sterman Resummation Formalism
• Investigating the origins of transverse spin asymmetries at RHIC
• The W boson production cross section at the LHC through O(alpha_s^2)
• W and Z transverse momentum distributions: resummation in qT-space
• Vector boson plus one jet production in POWHEG
• Measurement of Angular Distributions of Drell-Yan Dimuons in p + d Interaction at 800 GeV/c
• W and Z Polarization Effects in Hadronic Collisions
• Drell-Yan Lepton Angular Distribution at Small Transverse Momentum
• Angular Distributions of Drell-Yan Lepton Pairs at the Tevatron: Order ${\alpha }_s^2$ Corrections and Monte Carlo Studies
• Angular distribution of leptons from the decay of massive vector bosons
• A simple event weighting technique for optimizing the measurement of the forward-backward asymmetry of Drell-Yan dilepton pairs at hadron colliders

Cited by in corpus (44)

• Measurement of the Rapidity and Transverse Momentum Distributions of Z Bosons in pp Collisions at sqrt(s)=7 TeV
• NNLOPS accurate Drell-Yan production
• Measurement of $W^{\pm }Z$ production cross sections and gauge boson polarisation in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
• Angular coefficients of Z bosons produced in pp collisions at sqrt(s) = 8 TeV and decaying to mu+mu- as a function of transverse momentum and rapidity
• Novel Phenomenology of Parton Distributions from the Drell-Yan Process
• Measurement of the angular coefficients in $Z$-boson events using electron and muon pairs from data taken at $\sqrt{s}=8$ TeV with the ATLAS detector
• Electroweak gauge boson polarisation at the LHC
• Transverse momentum cross section of $e^{+}{e}^{-}$ pairs in the $Z$-boson region from $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV
• Electroweak Precision Tests of the Standard Model after the Discovery of the Higgs Boson
• Precise predictions for the angular coefficients in Z-boson production at the LHC
• Breaking down the entire W boson spin observables from its decay
• Drell-Yan lepton pair production at high energies in the Parton Reggeization Approach
• Azimuthal asymmetries in unpolarized SIDIS and Drell-Yan processes: a case study towards TMD factorization at subleading twist
• Interpretation of Angular Distributions of $Z$-boson Production at Colliders
• Drell-Yan lepton angular distributions in perturbative QCD
• Indirect measurement of ${\sin }^2{\theta }_W$ (or $M_W$) using ${\mu }^{+}{\mu }^{-}$ pairs from ${\gamma }^{\ast }/Z$ bosons produced in $p\bar{p}$ collisions at a center-of-momentum energy of 1.96 TeV
• Quantum tomography for collider physics: Illustrations with lepton pair production
• Indirect measurement of $si{n}^2{\theta }_W$ (M_W) using e+e- pairs in the Z-boson region with $p\bar{p}$ collisions at a center-of-momentum energy of 1.96 TeV
• First Search for Exotic Z Boson Decays into Photons and Neutral Pions in Hadron Collisions
• Measurement of ${\sin }^2{\theta }_{\mathrm{eff}}^{\mathrm{lept}}$ using $e^{+}{e}^{-}$ pairs from ${\gamma }^{\ast }/Z$ bosons produced in $p\bar{p}$ collisions at a center-of-momentum energy of 1.96 TeV
• The pionic Drell-Yan process: a brief survey
• Boer-Mulders function of pion meson and $q_T$-weighted $\cos 2\varphi$ asymmetry in the unpolarized ${\pi }^{-}p$ Drell-Yan at COMPASS
• Angular coefficients in W+j production at the LHC with high precision
• Longitudinal Z-Boson Polarization and the Higgs Boson Production Cross Section at the Large Hadron Collider
• Separating Electroweak and Strong interactions in Drell-Yan processes at LHC: leptons angular distributions and reference frames
• Rotation-invariant observables as Density Matrix invariants
• Drell-Yan lepton pair production at high energies in the kt-factorization approach
• Determination of the strong-coupling constant from the $Z$-boson transverse-momentum distribution
• W production at LHC: lepton angular distributions and reference frames for probing hard QCD
• Constraints on the ${\chi }_{c1}$ versus ${\chi }_{c2}$ polarizations in proton-proton collisions at $\sqrt{s}=$ 8 TeV
• The $\cos 2\varphi$ azimuthal asymmetry of unpolarized dilepton production at the $Z$-pole
• Dependencies of Lepton Angular Distribution Coefficients on the Transverse Momentum and Rapidity of$Z$ Bosons Produced in $pp$ Collisions at LHC
• Vector Bosons and Jets in Proton Collisions
• Lepton angular distributions of fixed-target Drell-Yan experiments in perturbative QCD and a geometric approach
• Perturbative $T$-odd asymmetries in the Drell-Yan process revisited
• Glauber gluons in pion-induced Drell-Yan processes
• Defiducialization: Providing Experimental Measurements for Accurate Fixed-Order Predictions
• From prompt to direct J/$\psi$ production: new insights on the ${\chi }_{c1}$ and ${\chi }_{c2}$ polarizations and feed-down contributions from a global-fit analysis of mid-rapidity LHC data
• Lepton angular distribution of $W$ boson productions
• Spin correlations in the Drell-Yan process, parton entanglement, and other unconventional QCD effects
• Lepton angular distribution of Z boson production and jet discrimination
• Single W and Z boson production properties and asymmetries
• Glauber gluons in pion-induced Drell-Yan processes revisited
• Angular distribution coefficients of Z(W) boson produced in $e^{+}{e}^{-}$ collisions at $\sqrt{s}=240$ GeV