A model independent analysis of gluonic pole matrix elements and universality of TMD fragmentation functions

Abstract

Gluonic pole matrix elements explain the appearance of single spin asymmetries (SSA) in high-energy scattering processes. They involve a combination of operators which are odd under time reversal (T-odd). Such matrix elements appear in principle both for parton distribution functions and parton fragmentation functions. We show that for parton fragmentation functions these gluonic pole matrix elements vanish as a consequence of the analytic structure of scattering amplitudes in Quantum Chromodynamics. This result is important in the study of the universality of transverse momentum dependent (TMD) fragmentation functions.

5 pages, 5 figures, version to appear in Phys. Rev. D

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• Master Formula for Twist-3 Soft-Gluon-Pole Mechanism to Single Transverse-Spin Asymmetry
• Spectral analysis of gluonic pole matrix elements for fragmentation
• Time ordering in off-diagonal parton distributions
• Gluonic Pole Cross Sections and Single Spin Asymmetries in Hadron-Hadron Scattering
• QCD evolution of naive-time-reversal-odd fragmentation functions

Cited by in corpus (29)

• Parton Fragmentation Functions
• Towards an explanation of transverse single-spin asymmetries in proton-proton collisions: the role of fragmentation in collinear factorization
• Fragmentation contribution to the transverse single-spin asymmetry in proton-proton collisions
• Generalized Universality of Definite Rank Gluon Transverse Momentum Dependent Correlators
• Contribution of twist-3 fragmentation function to single transverse-spin asymmetry in semi-inclusive deep inelastic scattering
• Polarized hadron pair production from electron-positron annihilation
• Effects of TMD evolution and partonic flavor on $e^{+}{e}^{-}$ annihilation into hadrons
• Generalized universality of higher transverse moments of quark transverse momentum dependent correlators
• Longitudinal-transverse double-spin asymmetries in single-inclusive leptoproduction of hadrons
• Single transverse spin asymmetry of prompt photon production
• Polarized hyperon production in single-inclusive electron-positron annihilation at next-to-leading order
• Twist-3 fragmentation contribution to polarized hyperon production in unpolarized hadronic collisions
• Predictive power of transverse-momentum-dependent distributions
• Transverse $\Lambda$ Polarization in $e^{+}{e}^{-}$ collisions
• Single-spin asymmetries in the leptoproduction of transversely polarized $\Lambda$ hyperons
• Beam Spin Asymmetries of Charged and Neutral Pion Productions in Semi-inclusive DIS
• Calculating Dihadron Fragmentation Functions in the NJL-jet model
• Quark fragmentation as a probe of dynamical mass generation
• Beam single spin asymmetry of neutral pion production in semi-inclusive deep inelastic scattering
• Electron-Ion Collider impact study on the tensor charge of the nucleon
• Collins and Sivers effects in p(transv. polarized) p --> jet pion X: Universality and process dependence
• Semi-inclusive back-to-back production of a hadron pair and a single hadron in $e^{+}{e}^{-}$ annihilation
• Dihadron Fragmentation Functions from the NJL-jet model and their QCD Evolution
• Twist Three Distribution f_\perp(x,k^\perp) in Light-front Hamiltonian Approach
• Single spin asymmetries in forward p-p/A collisions revisited: the role of color entanglement
• 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
• Wilson Lines off the Light-cone in TMD PDFs