Process dependent Sivers function and implications for single spin asymmetry in inclusive hadron production

Abstract

We study the single transverse spin asymmetries in the single inclusive particle production within the framework of the generalized parton model (GPM). By carefully analyzing the initial- and final-state interactions, we include the process-dependence of the Sivers functions into the GPM formalism. The modified GPM formalism has a close connection with the collinear twist-3 approach. Within the new formalism, we make predictions for inclusive ${\pi }^0$ and direct photon productions at RHIC energies. We find the predictions are opposite to those in the conventional GPM approach.

12 pages, 5 figures, extended discussion on connection with twist three approach, references added

References in corpus (14)

• Global analysis of fragmentation functions for pions and kaons and their uncertainties
• Sivers Effect for Pion and Kaon Production in Semi-Inclusive Deep Inelastic Scattering
• k_T factorization is violated in production of high-transverse-momentum particles in hadron-hadron collisions
• Single transverse-spin asymmetry in high transverse momentum pion production in pp collisions
• The Construction of Gauge-Links in Arbitrary Hard Processes
• Azimuthal and Single Spin Asymmetries in Hard Scattering Processes
• Forward Neutral Pion Transverse Single Spin Asymmetries in p+p Collisions at \sqrt{s}=200 GeV
• Single Transverse Spin Asymmetries of Identified Charged Hadrons in Polarized p+p Collisions at $\sqrt{s}$ = 62.4 GeV
• Heavy Quarkonium Production in Single Transverse Polarized High Energy Scattering
• Test the time-reversal modified universality of the Sivers function
• Hadronic Dijet Imbalance and Transverse-Momentum Dependent Parton Distributions
• The Sivers single-spin asymmetry in photon-jet production
• Single Transverse-Spin Asymmetry in Hadronic Dijet Production
• Single spin asymmetries in inclusive hadron production from SIDIS to hadronic collisions: universality and phenomenology

Cited by in corpus (4)

• An Observation Concerning the Process Dependence of the Sivers Functions
• Azimuthal asymmetries for hadron distributions inside a jet in hadronic collisions
• QCD evolution of naive-time-reversal-odd fragmentation functions
• General positivity bounds for spin observables in particle inclusive production