Single transverse spin asymmetry for large-pT pion production in semi-inclusive deep inelastic scattering

2006/04/30 by Hisato Eguchi, Y. Koike, Yuji Koike +1 · 2 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1016/j.nuclphysb.2006.05.036

published as Nucl.Phys.B752:1-17,2006 · 19 pages in LaTex. Some discussions added. To appear in Nucl. Phys. B

arxiv created 2006/05/17 · openalex publication_date 2006/07/07 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We study the single spin asymmetry (SSA) for the pion production with large transverse momentum p_T in semi-inclusive deep inelastic scattering ep^\uparrow→ eπX. We derive the twist-3 cross section formula for SSA, focussing on the soft-gluon-pole contributions associated with the twist-3 distribution for the nucleon and with the twist-3 fragmentation function for the pion. We present a simple estimate of the asymmetries due to each twist-3 effect from nucleon and pion, respectively, by fixing the overall strength of the relevant nonperturbative quantities by the data on the SSA A_N in p^\uparrow p→πX collision.

Citations

• Fragmentation functions for pions, kaons, and protons at next-to-leading order
• Cross Sections and Transverse Single-Spin Asymmetries in Forward Neutral-Pion Production from Proton Collisions ats=200 GeV
• STUDY OF THE FUNDAMENTAL STRUCTURE OF MATTER WITH AN ELECTRON-ION COLLIDER
• Single-spin production asymmetries from the hard scattering of pointlike constituents

Cited by

• A phenomenological study of single transverse-spin asymmetry for inclusive light-hadron productions at RHIC
• Master formula for the three-gluon contribution to single spin asymmetry in semi-inclusive deep inelastic scattering