Spectral analysis of gluonic pole matrix elements for fragmentation

Abstract

The non-vanishing of gluonic pole matrix elements can explain the appearance of single spin asymmetries in high-energy scattering processes. We use a spectator framework approach to investigate the spectral properties of quark-quark-gluon correlators and use this to study gluonic pole matrix elements. Such matrix elements appear in principle both for distribution functions such as the Sivers function and fragmentation functions such as the Collins function. We find that for a large class of spectator models, the contribution of the gluonic pole matrix element in fragmentation functions vanishes. This outcome is important in the study of universality for fragmentation functions and confirms findings using a different approach.

9 pages, 4 figures, added references

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Cited by in corpus (41)

• Extraction of Quark Transversity Distribution and Collins Fragmentation Functions with QCD Evolution
• Parton Fragmentation Functions
• QCD Evolution of the Sivers Asymmetry
• Towards an explanation of transverse single-spin asymmetries in proton-proton collisions: the role of fragmentation in collinear factorization
• Collins Fragmentation and the Single Transverse Spin Asymmetry
• Fragmentation contribution to the transverse single-spin asymmetry in proton-proton collisions
• Angular dependences in inclusive two-hadron production at BELLE
• Partonic Pole Matrix Elements for Fragmentation
• Collins azimuthal asymmetries of hadron production inside jets
• Generalized Universality of Definite Rank Gluon Transverse Momentum Dependent Correlators
• 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
• Polarized hadron pair production from electron-positron annihilation
• Extracting the Transverse Momentum Dependent Polarizing Fragmentation Functions
• Effects of TMD evolution and partonic flavor on $e^{+}{e}^{-}$ annihilation into hadrons
• QCD evolution of naive-time-reversal-odd fragmentation functions
• A model independent analysis of gluonic pole matrix elements and universality of TMD fragmentation functions
• Transverse Spin Structure of the Nucleon
• Generalized universality of higher transverse moments of quark transverse momentum dependent correlators
• Longitudinal-transverse double-spin asymmetries in single-inclusive leptoproduction of hadrons
• T-odd quark-gluon-quark correlation function in the diquark model
• Momentum sum rules for fragmentation functions
• Twist-3 fragmentation contribution to polarized hyperon production in unpolarized hadronic collisions
• Single-spin asymmetries in the leptoproduction of transversely polarized $\Lambda$ hyperons
• Exact Relations for Twist-3 Gluon Distribution and Fragmentation Functions from Operator Identities
• Transverse polarization of the $\Lambda$ hyperon from unpolarized quark fragmentation in the diquark model
• Several Topics on Transverse Momentum-Dependent Fragmentation Functions
• Beam single spin asymmetry of neutral pion production in semi-inclusive deep inelastic scattering
• The Drell-Yan process with pions and polarized nucleons
• Dihadron Azimuthal Correlation from Collins Effect in Unpolarized Hadron Collisions
• Electron-Ion Collider impact study on the tensor charge of the nucleon
• Non-collinearity in high energy processes
• Twist Three Distribution f_\perp(x,k^\perp) in Light-front Hamiltonian Approach
• Spin Orbit Correlations and the Structure of the Nucleon
• Predicting the $\sin {\varphi }_S$ Single-Spin-Asymmetry of $\Lambda$ Production off transversely polarized nucleon in SIDIS
• Generalized Universality for TMD Distribution Functions
• Color effects for transverse momentum dependent parton distribution functions in hadronic processes
• Test of the Universality of Naive-time-reversal-odd Fragmentation Functions
• Wilson Lines off the Light-cone in TMD PDFs
• Leading and higher twist transverse momentum dependent parton distribution functions in the spectator model
• Time-reversal-odd phenomena in QCD
• Single spin asymmetries and gluonic pole matrix elements