TY - JOUR
T1 - Collins azimuthal asymmetries of hadron production inside jets
AU - Kang, Zhong Bo
AU - Prokudin, Alexei
AU - Ringer, Felix
AU - Yuan, Feng
N1 - Funding Information:
We thank J.K. Adkins, J.L. Drachenberg, R. Fatemi and C.A. Gagliardi for discussions and the correspondence on the STAR experimental data. This work is supported by the U.S. Department of Energy under Contract Nos. DE-AC05-06OR23177 (A.P.), DE-AC02-05CH11231 (F.R., F.Y.), by the National Science Foundation under Contract No. PHY-1623454 (A.P.), by the LDRD Program of Lawrence Berkeley National Laboratory (F.R., F.Y.) and within the framework of the TMD Topical Collaboration (A.P., F.Y.).
Publisher Copyright:
© 2017 The Author(s)
PY - 2017/11/10
Y1 - 2017/11/10
N2 - 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.
AB - 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.
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U2 - 10.1016/j.physletb.2017.10.031
DO - 10.1016/j.physletb.2017.10.031
M3 - Article
AN - SCOPUS:85033496905
VL - 774
SP - 635
EP - 642
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
ER -