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Title: Collins azimuthal asymmetries of hadron production inside jets

Here, 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.
ORCiD logo [1] ;  [2] ;  [3] ;  [3]
  1. Univ. of California, Los Angeles, CA (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Penn State Univ. Berks, Reading, PA (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
Report Number(s):
JLAB-THY-17-2497; DOE/OR/23177-4235; arXiv:1707.00913
Journal ID: ISSN 0370-2693; PII: S0370269317308432; TRN: US1800930
Grant/Contract Number:
AC05-06OR23177; AC02-05CH11231; PHY-1623454
Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 774; Journal Issue: C; Journal ID: ISSN 0370-2693
Research Org:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Collins asymmetry; Jets; Polarized scattering; Perturbative QCD
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1416343; OSTI ID: 1420119