Positivity Constraints for Spin-Dependent Parton Distributions

Abstract

We derive new positivity constraints on the spin-dependent structure functions of the nucleon. These model independent results reduce conside\-rably their domain of allowed values, in particular for the chiral-odd parton distribution $h_1(x)$.

8 pages,CPT-94/P.3059,LaTex,3 fig available on cpt.univ-mrs.fr directory pub/preprints/94/fundamental-interactions/94-P.3059

References in corpus (2)

• Measurement of the Spin-Dependent Structure Function $g_1(x)$ of the Proton
• Parton Distributions from W+- and Z Production in Polarized pp and pn Collisions at RHIC

Cited by in corpus (202)

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• Transverse Polarisation of Quarks in Hadrons
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• Transversity and Collins functions from SIDIS and e+e- data
• Prospects for Spin Physics at RHIC
• Single Spin Asymmetries in Charged Pion Production from Semi-Inclusive Deep Inelastic Scattering on a Transversely Polarized ${}^3$He Target
• Extraction of Quark Transversity Distribution and Collins Fragmentation Functions with QCD Evolution
• Parton Fragmentation Functions
• Update on transversity and Collins functions from SIDIS and e+ e- data
• Spin Physics and Polarized Structure Functions
• A guide to light-cone PDFs from Lattice QCD: an overview of approaches, techniques and results
• Parton distributions and lattice QCD calculations: toward 3D structure
• The Spin Structure of the Proton
• Single-Transverse Spin Asymmetries: From DIS to Hadronic Collisions
• Azimuthal and Single Spin Asymmetries in Hard Scattering Processes
• Bounds on transverse momentum dependent distribution and fragmentation functions
• The Spin Structure of the Nucleon
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• Unified framework for generalized and transverse-momentum dependent parton distributions within a 3Q light-cone picture of the nucleon
• Chiral-odd generalized parton distributions in constituent quark models
• Next-to-leading Order Evolution of Transversity Distributions and Soffer's Inequality
• The Spin Structure of the Nucleon
• Quark helicity flip generalized parton distributions from two-flavor lattice QCD
• Partial-wave analysis of two-hadron fragmentation functions
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• Novel Transversity Properties in Semi-Inclusive Deep Inelastic Scattering
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• Evolution of the helicity and transversity Transverse-Momentum-Dependent parton distributions
• The Quark Spin Distributions of the Nucleon
• Tensor Charge of the Nucleon in Lattice QCD
• Next-to-leading order Q^2-evolution of the transversity distribution h_1(x, Q^2)
• Nucleon structure from basis light-front quantization
• Transversity quark distributions in a covariant quark-diquark model
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• 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
• Polarized Structure Functions in QCD
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• High precision determination of the $Q^2$-evolution of the Bjorken Sum
• Azimuthal asymmetries at CLAS: Extraction of e^a(x) and prediction of A_{UL}
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• Flavor Structure of the Nucleon Sea
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• Polarization in Hadronic ΛHyperon Production and Chiral-Odd Twist-3 Distribution
• Transverse Spin Structure of the Nucleon through Target Single Spin Asymmetry in Semi-Inclusive Deep-Inelastic $(e,e^{\prime }{\pi }^{\pm })$ Reaction at Jefferson Lab
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• Chiral Constituent quarks and their role in quark distribution functions of nucleon and pion
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• PHENOMENOLOGICAL APPROACH TO UNPOLARIZED AND POLARIZED PARTON DISTRIBUTIONS AND EXPERIMENTAL TESTS
• Single-spin Azimuthal Asymmetries in the ``Reduced Twist-3 Approximation''
• Soffer's inequality and the transversely polarized Drell-Yan process at next-to-leading order
• Are there approximate relations among transverse momentum dependent distribution functions?
• Single Spin Asymmetry in Inclusive Pion Production, Collins Effect and the String Model (revised version)
• Azimuthal asymmetries for hadron distributions inside a jet in hadronic collisions
• Nucleon tensor charge from Collins azimuthal asymmetry measurements
• Drell-Yan processes, transversity and light-cone wavefunctions
• Unveiling the nucleon tensor charge at Jefferson Lab: A study of the SoLID case
• The Sivers single-spin asymmetry in photon-jet production
• Extracting Boer-Mulders functions from $p+D$ Drell-Yan processes
• Single Spin Asymmetry Scaling in the Forward Rapidity Region at RHIC
• Flavor-Spin Symmetry Estimate of the Nucleon Tensor Charge
• Higher twist parton distributions from light-cone wave functions
• Transversity distribution function in hard scattering of polarized protons and antiprotons in the PAX experiment
• A confinement model calculation of h_1(x)
• Nucleon Transversity Distribution from Azimuthal Spin Asymmetry in Pion Electroproduction
• TMDs of Spin-one Targets: Formalism and Covariant Calculations
• On the QCD Evolution of the Transversity Distribution
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• Quasi-parton distribution functions: a study in the diquark spectator model
• Comparative analysis of the transversities and the longitudinally polarized distribution functions of the nucleon
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• Updated QCD global analysis of single transverse-spin asymmetries I: Extracting $\tilde{H}$, and the role of the Soffer bound and lattice QCD
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• Extraction of the distribution function $h_{1T}^{\perp }$ from experimental data
• SOFFER'S INEQUALITY
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• Tensor charges of light baryons in the Infinite Momentum Frame
• Dilepton production near partonic threshold in transversely polarized proton-antiproton collisions
• Tensor charges and form factors of SU(3) baryons in the self-consistent SU(3) chiral quark-soliton model
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• Regge phenomenology of pion photoproduction off the nucleon at forward angles
• Role of the Soffer bound in determination of transversity and the tensor charge
• Numerical solution of Q^2 evolution equation for the transversity distribution Delta_T q
• QCD analysis of polarized DIS and the SIDIS asymmetry world data and light sea-quark decomposition
• Chiral Odd Structure Functions from a Chiral Soliton
• Investigation of single spin asymmetries in pi^{+} electroproduction
• On the importance of Lorentz structure in the parton model: target mass corrections, transverse momentum dependence, positivity bounds
• Relating transverse structure of various parton distributions
• Transverse Double-Spin Asymmetries for Muon Pair Production in pp-Collisions
• Bounds on Transverse Spin Asymmetries for Lambda Baryon Production in pp Collisions at BNL RHIC
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• Reassessment of the Collins Mechanism for Single-spin Asymmetries and the behavior of Delta d(x) at large x
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• Azimuthal Spin Asymmetries in Semi-Inclusive Production from Positron-Proton Scattering
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• Constraining double parton correlations and interferences
• Di-hadron fragmentation and mapping of the nucleon structure
• Transverse spin asymmetries at the EIC as a probe of anomalous electric and magnetic dipole moments
• A_{LT} in the polarized Drell-Yan process at RHIC and HERA energies
• Chiral-odd transversity spin structure function $h_1(x)$ of the nucleon in a constituent quark model
• Next-to-leading order QCD corrections to A_TT for prompt photon production
• Single target-spin asymmetries in semi-inclusive pion electroproduction on longitudinally polarized protons
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• New Sum Rules for Nucleon Tensor Charges
• Positivity constraints and flavor dependence of higher twists
• Probing the transverse spin of quarks in deep inelastic scattering
• Azimuthal asymmetries for hadron distributions inside jets in hadronic collisions
• Collins and Sivers effects in p(transv. polarized) p --> jet pion X: Universality and process dependence
• Double Transverse-Spin Asymmetries in Drell-Yan Processes with Antiprotons
• Next-to-leading order QCD corrections to single-inclusive hadron production in transversely polarized p-p and pbar-p collisions
• Collins Effect in Single Spin Asymmetries of the $p^{\uparrow }p\to \pi X$ Process
• Transverse structure of the proton beyond leading twist: A light-front Hamiltonian approach
• Double parton distributions in the pion from lattice QCD
• Probing gluon helicity distribution and quark transversity through hyperon polarization in singly polarized pp collisions
• Realistic estimate of valence transversity distributions from inclusive dihadron production
• Soft gluon corrections to double transverse-spin asymmetries for small-$Q_T$ dilepton production at RHIC and J-PARC
• Spin alignment of the high $p_T$ vector mesons in polarized pp collisions at high energies
• Inequalities for nucleon generalized parton distributions with helicity flip
• MC-Simulation of the Transverse Double Spin Asymmetry for RHIC
• Positivity constraints on photon structure functions
• New positivity bounds on polarized parton distributions in multicolored QCD
• Transversity in the chiral quark--soliton model and single spin asymmetries
• Double parton distributions out of bounds in colour space
• Spin correlations and Bell nonlocality in $\Lambda \bar{\Lambda }$ pair production from $e^{+}{e}^{-}$ collisions with a thrust cut
• Virtual photon structure functions and positivity constraints
• Transversity distribution in spin asymmetries in semi-inclusive DIS and in the Drell-Yan process
• Transversity K Factors for Drell-Yan
• Positivity bounds on gluon TMDs for hadrons of spin $\le$ 1
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• Positivity constraints on initial spin observables in inclusive reactions
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• Double-spin asymmetries for small-Q_T Drell-Yan pair production in transversely polarized p\bar{p} collisions
• Detecting correlated di-hadron pairs: about the extraction of transversity and beyond
• Positivity bounds for Sivers functions
• How is transversity related to helicity for quarks and antiquarks inside the proton?
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• QED corrections to parton distributions and Altarelli-Parisi splitting functions in the polarized case
• Flavor Asymmetry of the Polarized Light Sea: Models vs. Data
• Single spin asymmetries in QCD
• Hadron Spin Dynamics
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• Constraints on spin observables in pbar p --> Lambdabar Lambda
• Dihadron Fragmentation Functions and Transversity
• Mapping the internal structure of hadrons through color and spin effects
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• Different behaviour of the spin structure functions $g_1(x)$ and $h_1(x)$ at $x\to 0$
• Measurement of the nucleon spin structure functions for 0.01<$Q^2$<1 GeV${}^2$ using CLAS
• Squark Contributions to Photon Structure Functions and Positivity Constraints
• On impact parameter dependence of low-x structure functions
• Old and new parton distribution and fragmentation functions
• The High-Z hydrogen-like atom: a model for polarized structure functions
• Transversity and heavy quark production on hadron colliders
• On the extreme behaviour of $g_1(x,Q^2)$ at $x\to 0$
• Virtual Photon Structure Functions
• Spin Effects in the Electron Structure Functions
• Hadron Structure Functions in a Chiral Quark Model
• Azimuthal and spin asymmetries in DIS
• Recent developments in nucleon spin structure with focus on h_{1L}^{\perp} and pretzelosity h_{1T}^\perp
• Perturbative contribution to the sin(phi) asymmetry in inclusive pi^{+} electroproduction
• On the anomalous dimension for the transversity distribution
• Transverse Double-Spin Asymmetries for Dimuon Production in pp Collisions
• A rigorous bound on quark distributions in the nucleon
• Polarized lepton nucleon scattering -- summary of the theory talks on spin physics at DIS 99
• New prospects for polarized hyperon fragmentation functions
• Structure of the constituent quark and quark distributions of hadrons
• Azimuthal asymmetries in semi-inclusive leptoproduction
• Generalizing the Soffer Bound: Positivity Constraints on Parton Distributions of Spin-3/2 Particles
• Single/Double-Spin Asymmetry Measurements of Semi-Inclusive Pion Electroproduction on a Transversely Polarized 3He Target through Deep Inelastic Scattering
• Origins of single transverse spin asymmetries
• QCD Corrections to Dilepton Production near Partonic Threshold in proton-antiproton Scattering