Collins azimuthal asymmetries of hadron production inside jets

Zhong Bo Kang, Alexei Prokudin, Felix Ringer, Feng Yuan

Research output: Contribution to journalArticlepeer-review

46 Scopus citations


We investigate the Collins azimuthal asymmetry of hadrons produced inside jets in transversely polarized proton–proton collisions. Recently, the quark transversity distributions and the Collins fragmentation functions have been extracted within global analyses from data of the processes semi-inclusive deep inelastic scattering and electron–positron annihilation. We calculate the Collins azimuthal asymmetry for charged pions inside jets using these extractions for RHIC kinematics at center-of-mass energies of 200 and 500 GeV. We compare our results with recent data from the STAR Collaboration at RHIC and find good agreement, which confirms the universality of the Collins fragmentation functions. In addition, we further explore the impact of transverse momentum dependent evolution effects.

Original languageEnglish (US)
Pages (from-to)635-642
Number of pages8
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
StatePublished - Nov 10 2017

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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