Angular distribution of leptons from the decay of massive vector bosons

Abstract

We examine the transverse momentum $Q_{\perp }$ dependence of the helicity structure functions for massive vector bosons of mass $Q$ in hadron reactions. We demonstrate that large logarithmic terms of the form $\ln (Q/Q_{\perp })$ in the helicity structure functions have the same origin as the logarithmic terms in the angular-integrated cross section and that they can be resummed to all orders in the strong coupling ${\alpha }_s$, in the same way as the angular-integrated cross section. As a consequence of current conservation, the resummed part of the helicity structure functions preserves the Lam-Tung relation as a function of $Q_{\perp }$ to all orders in ${\alpha }_s$.

4 pages; a few changes in wording; one reference added. Version in press at Phys. Lett. B

References in corpus (5)

• Vector boson production 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
• Effects of QCD Resummation on Distributions of Leptons from the Decay of Electroweak Vector Bosons
• Transverse momentum dependence of the angular distribution of the Drell-Yan process

Cited by in corpus (24)

• 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
• Azimuthal Angular Asymmetry of Soft Gluon Radiation in Jet Production
• Anisotropy in Dijet Production in Exclusive and Inclusive Processes
• 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
• Measurement of Angular Distributions of Drell-Yan Dimuons in $p+p$ Interactions at 800 GeV/c
• Updating Boer-Mulders functions from unpolarized pd and pp Drell-Yan data
• Difficulties in the description of Drell-Yan processes at moderate invariant mass and high transverse momentum
• Cuts for two-body decays at colliders
• Interpretation of Angular Distributions of $Z$-boson Production at Colliders
• Drell-Yan lepton angular distributions in perturbative QCD
• A simple event weighting technique for optimizing the measurement of the forward-backward asymmetry of Drell-Yan dilepton pairs at hadron colliders
• Azimuthal asymmetries in lepton-pair production at a fixed-target experiment using the LHC beams (AFTER)
• Drell-Yan Lepton Pair Azimuthal Asymmetry in Hadronic Processes
• Transverse single spin asymmetry in the Drell-Yan process
• Drell-Yan lepton pair production at high energies in the kt-factorization approach
• Dependencies of Lepton Angular Distribution Coefficients on the Transverse Momentum and Rapidity of$Z$ Bosons Produced in $pp$ Collisions at LHC
• Lepton angular distributions of fixed-target Drell-Yan experiments in perturbative QCD and a geometric approach
• The $\cos 2\varphi$ azimuthal asymmetry of unpolarized dilepton production at the $Z$-pole
• Perturbative $T$-odd asymmetries in the Drell-Yan process revisited
• Glauber gluons in pion-induced Drell-Yan processes
• Light-Cone Singularities and Transverse-Momentum-Dependent Factorization at Twist-3
• Glauber gluons in pion-induced Drell-Yan processes revisited
• Transverse momentum dependent quark distributions and polarized Drell-Yan processes