Bounds on transverse momentum dependent distribution and fragmentation functions

Abstract

We give bounds on the distribution and fragmentation functions that appear at leading order in deep inelastic 1-particle inclusive leptoproduction or in Drell-Yan processes. These bounds simply follow from positivity of the defining matrix elements and are an important guidance in estimating the magnitude of the azimuthal and spin asymmetries in these processes.

5 pages, Revtex, 3 Postscript figures, version with minor changes, to be published in Physical Review Letters

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Cited by in corpus (124)

• Universality of T-odd effects in single spin and azimuthal asymmetries
• Transverse momentum dependence in gluon distribution and fragmentation functions
• Transverse-momentum distributions in a diquark spectator model
• Parton Fragmentation Functions
• Single transverse-spin asymmetry in high transverse momentum pion production in pp collisions
• Measurement of Azimuthal Asymmetries in Inclusive Production of Hadron Pairs in e+e- Annihilation at \sqrt{s} = 10.58 GeV
• Transverse momentum dependent parton distributions in a light-cone quark model
• Azimuthal and Single Spin Asymmetries in Hard Scattering Processes
• Exploring quark transverse momentum distributions with lattice QCD
• Spin densities in the transverse plane and generalized transversity distributions
• The transverse momentum dependent distribution functions in the bag model
• Sivers effect in semi-inclusive deeply inelastic scattering
• Sivers and Boer-Mulders observables from lattice QCD
• Direct Probes of Linearly Polarized Gluons inside Unpolarized Hadrons
• Gauge Link Structure in Quark-Quark Correlators in hard processes
• Sivers function in a spectator model with axial-vector diquarks
• Intrinsic transverse parton momenta in deeply inelastic reactions
• Sivers Function in the MIT Bag Model
• Measurement of Collins asymmetries in inclusive production of charged pion pairs in e^+e^- annihilation at BABAR
• Partial-wave analysis of two-hadron fragmentation functions
• Constraining quark angular momentum through semi-inclusive measurements
• Azimuthal spin asymmetries in light-cone constituent quark models
• Probing Gluonic Spin-Orbit Correlations in Photon Pair Production
• Angular dependences in inclusive two-hadron production at BELLE
• Two-hadron semi-inclusive production including subleading twist
• Collins fragmentation function for pions and kaons in a spectator model
• Intrinsic transverse momentum and parton correlations from dynamical chiral symmetry breaking
• What can break the Wandzura--Wilczek relation?
• Pion TMDs in light-front constituent approach, and Boer-Mulders effect in the pion-induced Drell-Yan process
• Collins effect in semi-inclusive deeply inelastic scattering and in electron positron annihilation
• Transverse momentum dependent distribution functions in a covariant parton model approach with quark orbital motion
• Parton intrinsic motion: suppression of the Collins mechanism for transverse single spin asymmetries in p(transv. polarised) p --> pion + X
• Pretzelosity distribution function h_1T^perp and the single spin asymmetry A_UT^sin(3phi-phi_S)
• Estimate of the Collins fragmentation function in a chiral invariant approach
• Extraction of the Sivers function from SIDIS, Drell-Yan, and $W^{\pm }/Z$ boson production data with TMD evolution
• Sivers effect in Drell Yan at RHIC
• Semi-Inclusive Deep Inelastic Scattering in Wandzura-Wilczek-type approximation
• General Helicity Formalism for Polarized Semi-Inclusive Deep Inelastic Scattering
• Predictions for double spin asymmetry A_{LT} in Semi Inclusive DIS
• Power corrections to TMD factorization for Z-boson production
• Indication on the process-dependence of the Sivers effect
• Azimuthal asymmetries for hadron distributions inside a jet in hadronic collisions
• Extracting the Transverse Momentum Dependent Polarizing Fragmentation Functions
• A systematic phenomenological study of the $\cos 2\varphi$ asymmetry in unpolarized semi--inclusive DIS
• Transverse momentum dependence of the quark helicity distributions and the Cahn effect in double-spin asymmetry $A_{LL}$ in Semi Inclusive DIS
• Naive time-reversal odd phenomena in semi-inclusive deep-inelastic scattering from light-cone constituent quark models
• Dihadron interference fragmentation functions in proton-proton collisions
• The Sivers single-spin asymmetry in photon-jet production
• Extracting Boer-Mulders functions from $p+D$ Drell-Yan processes
• N${}^3$LO extraction of the Sivers function from SIDIS, Drell-Yan, and $W^{\pm }/Z$ data
• Sivers vs. Collins effect in azimuthal single spin asymmetries in pion production in SIDIS
• Weighted azimuthal asymmetries in a diquark spectator model
• Updating Boer-Mulders functions from unpolarized pd and pp Drell-Yan data
• Evolution of transverse momentum dependent distribution and fragmentation functions
• Quasi-parton distribution functions: a study in the diquark spectator model
• The three-dimensional distribution of quarks in momentum space
• Transverse structure of proton in a light-front quark-diquark model
• Single Transverse-Spin Asymmetries at Large-x
• Extraction of the distribution function $h_{1T}^{\perp }$ from experimental data
• Nucleon parton distributions in a light-front quark model
• Relating transverse structure of various parton distributions
• Investigation of single spin asymmetries in pi^{+} electroproduction
• Factorisation, Parton Entanglement and the Drell-Yan Process
• On the importance of Lorentz structure in the parton model: target mass corrections, transverse momentum dependence, positivity bounds
• Direct extraction of transversity and its accompanying T-odd distribution from the unpolarized and single-polarized Drell-Yan processes
• Gluon Sivers function in a light-cone spectator model
• Sivers Function in the Quasi-Classical Approximation
• Target mass corrections for virtual Compton scattering at twist-2 and generalized, non-forward Wandzura-Wilczek and Callan-Gross relations
• Positivity bounds on spin-one distribution and fragmentation functions
• Transverse momentum structure of proton within the basis light-front quantization framework
• Azimuthal single spin asymmetries in SIDIS in the light of chiral symmetry breaking
• Positivity bounds on double parton distributions
• Insights on non-perturbative aspects of TMDs from models
• On the cos 2 phi asymmetry in unpolarized leptoproduction
• Predicting the light-front holographic TMDs of the pion
• Partonic Transverse Motion in Unpolarized Semi-Inclusive Deep Inelastic Scattering Processes
• Gauge-invariant TMD factorization for Drell-Yan hadronic tensor at small x
• Twist Three Distribution e(x) : Sum Rules and Equation of Motion Relations
• The electron in three-dimensional momentum space
• Azimuthal asymmetries in lepton-pair production at a fixed-target experiment using the LHC beams (AFTER)
• Constraining double parton correlations and interferences
• First global QCD analysis of the TMD ${\mathbf{g}}_{1\mathbf{T}}$ from semi-inclusive DIS data
• Sub-leading twist transverse momentum dependent parton distributions in the light-front quark-diquark model
• Transverse polarization of the $\Lambda$ hyperon from unpolarized quark fragmentation in the diquark model
• Statistical approach of pion parton distributions from Drell-Yan process
• Twist-4 T-even proton TMDs in the light-front quark-diquark model
• Boer-Mulders function of pion meson and $q_T$-weighted $\cos 2\varphi$ asymmetry in the unpolarized ${\pi }^{-}p$ Drell-Yan at COMPASS
• Transverse momentum distributions of valence quark in light and heavy vector mesons
• Transverse momentum dependent twist-three result for polarized Drell-Yan processes
• Probing the transverse spin of quarks in deep inelastic scattering
• Quark-Jet model for transverse momentum dependent fragmentation functions
• Azimuthal asymmetries for hadron distributions inside jets in hadronic collisions
• Monte Carlo Implementation of Polarized Hadronization
• Wandzura-Wilczek-type relations of $\rho$-meson wave functions
• Transverse structure of the proton beyond leading twist: A light-front Hamiltonian approach
• Exploring twist-4 chiral-even GPDs in the light-front quark-diquark model
• Azimuthal asymmetries in single polarized proton-proton Drell-Yan processes
• T-even transverse momentum dependent gluon fragmentation functions in a spectator model
• Sivers and Boer-Mulders TMDs of proton in a light-front quark-diquark model
• Double parton distributions out of bounds in colour space
• New findings in gluon TMD physics
• Unraveling sub-leading twist GTMDs of proton using LFQDM
• Colour unwound - disentangling colours for azimuthal asymmetries in Drell-Yan scattering
• Twist-4 proton GTMDs in the light-front quark-diquark model
• Positivity bounds on gluon TMDs for hadrons of spin $\le$ 1
• Double Collins effect in $e^{+}{e}^{-}\to \Lambda \bar{\Lambda }X$ process in a diquark spectator model
• Polarized and unpolarized Drell-Yan angular distribution in the helicity formalism
• Positivity bounds for Sivers functions
• Deciphering Twist-3 Chiral-Even GPDs in the Light-Front Quark-Diquark Model
• Q^2 dependence of azimuthal asymmetries in semi-inclusive deep inelastic scattering and in Drell-Yan
• Parity odd Fragmentation Functions
• TMD Relations: Insights from a Light-Front Quark-Diquark Model
• Constraints on spin observables in pbar p --> Lambdabar Lambda
• Nucleon Structure from Basis Light-Front Quantization : Status and Prospects
• Transverse spin polarization as a novel probe of medium-induced transverse-momentum-broadening effect
• Measurement of the Transverse Single-Spin Asymmetry for Mid-rapidity Production of Neutral Pions in Polarized p+p Collisions at 200 GeV Center-of-Mass Energy
• Azimuthal asymmetries in $D$-meson and jet production at the EIC
• Mapping the internal structure of hadrons through color and spin effects
• The High-Z hydrogen-like atom: a model for polarized structure functions
• Azimuthal asymmetries in semi-inclusive leptoproduction
• Recent developments in nucleon spin structure with focus on h_{1L}^{\perp} and pretzelosity h_{1T}^\perp
• Azimuthal and spin asymmetries in DIS
• Transverse Spin and Classical Gluon Fields: Combining Two Perspectives on Hadronic Structure
• Sivers effect in semi-inclusive DIS and in the Drell-Yan process