Helicity Dependence of Jet Properties from Di-hadrons in Longitudinally Polarized p+p Collisions at {radical}(s) = 200 GeV

Journal Article · Tue Aug 04 00:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3215713· OSTI ID:21316977

Fields, Douglas E ^[1]

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1. University of New Mexico, 800 Yale NE MSC07-4220 Albuquerque, NM 87131 (United States)

We examine the double-longitudinal difference of the RMS partonic transverse momentum {radical}(<k{sub T}{sup 2}>) derived from di-hadron azimuthal correlations in p-vector+p-vector collisions at {radical}(s) 200 GeV in PHENIX data from the 2005 and 2006 RHIC runs. The motivation is to explore the possible contribution of proton-spin-correlated partonic transverse momentum (orbital angular momentum) to the measured inclusive partonic {radical}(<k{sub T}{sup 2}>) as described in [1]. We follow the analysis procedure described in [2] that relates the width of the away-side peak in the azimuthal two-particle distributions to the transverse momentum of the di-jet. The difference, {delta}{radical}(<k{sub T}{sup 2}>) between like- and unlike-helicity collisions is then extracted. When averaged over the triggered particle transverse momentum, <{delta}{radical}(<k{sub T}{sup 2}>)>{sub pTt} -8{+-}90 MeV/c.

• OSTI ID: 21316977
• Journal Information: AIP Conference Proceedings, Vol. 1149, Issue 1; Conference: 18. international spin physics symposium, Charlottesville, VA (United States), 6-11 Oct 2008; Other Information: DOI: 10.1063/1.3215713; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BROOKHAVEN RHIC
CORRELATIONS
GEV RANGE
GLUONS
HELICITY
INCLUSIVE INTERACTIONS
JET MODEL
MEV RANGE
MULTIPARTICLE SPECTROMETERS
MULTIPLE PRODUCTION
ORBITAL ANGULAR MOMENTUM
PARTICLE IDENTIFICATION
PARTICLE STRUCTURE
PROTON-PROTON INTERACTIONS
PROTONS
QUANTUM CHROMODYNAMICS
QUARKS
SPIN
TRANSVERSE MOMENTUM