Transversity from two pion interference fragmentation

Abstract

We present calculation on the azimuthal spin asymmetries for pion pair production in semi-inclusive deep inelastic scattering (SIDIS) process at both HERMES and COMPASS kinematics, with transversely polarized proton, deuteron and neutron targets. We calculate the asymmetry by adopting a set of parametrization of the interference fragmentation functions and two different models for the transversity. We find that the result for the proton target is insensitive to the approaches of the transversity but more helpful to understand the interference fragmentation functions. However, for the neutron target, which can be obtained through using deuteron and {${}^3$He} targets, we find different predictions for different approaches to the transversity. Thus probing the two pion interference fragmentation from the neutron can provide us more interesting information on the transversity.

15 latex pages, 6 figures, to appear in PRD

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Cited by in corpus (10)

• Transverse spin effects in hadron-pair production from semi-inclusive deep inelastic scattering
• A high-statistics measurement of transverse spin effects in dihadron production from muon-proton semi-inclusive deep-inelastic scattering
• Evidence for a Transverse Single-Spin Asymmetry in Leptoproduction of pi+pi- Pairs
• Dihadron fragmentation functions for large invariant mass
• Di-hadron fragmentation and mapping of the nucleon structure
• Calculating Dihadron Fragmentation Functions in the NJL-jet model
• Dihadron Fragmentation Functions from the NJL-jet model and their QCD Evolution
• The $\sin 2\varphi$ azimuthal asymmetry in single longitudinally polarized $\pi N$ Drell-Yan process
• Single spin asymmetry in $\pi p$ Drell-Yan process
• Transverse Spin Physics at COMPASS