Double Helicity Asymmetry of Inclusive {pi}0 Production in Polarized pp Collisions at {radical}(s) = 62.4 GeV

Journal Article · Wed Jun 13 00:00:00 EDT 2007 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2750791· OSTI ID:21061909

Aoki, K ^[1]

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1. Department of Physics, Kyoto University, Kyoto, Kyoto, 606-8502 (Japan)

The proton spin structure is not understood yet and there has remained large uncertainty on {delta}g, the gluon spin contribution to the proton. Double helicity asymmetry (A{sub LL}) of {pi}0 production in polarized pp collisions is used to constrain {delta}g. In this report, preliminary results of A{sub LL} of {pi}0 in pp collisions at {radical}(s) = 62.4 GeV measured by PHENIX experiment in 2006 is presented. It can probe higer x region than the previously reported {pi}0ALL at {radical}(s) = 200 GeV thanks to the lower center of mass energy.

• OSTI ID: 21061909
• Journal Information: AIP Conference Proceedings, Vol. 915, Issue 1; Conference: 17. international spin physics symposium, Kyoto (Japan), 2-7 Oct 2006; Other Information: DOI: 10.1063/1.2750791; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA). PHENIX Collaboration; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
COLLIDING BEAMS
GEV RANGE
GLUONS
HELICITY
INCLUSIVE INTERACTIONS
MULTIPARTICLE SPECTROMETERS
PARTICLE IDENTIFICATION
PARTICLE PRODUCTION
PIONS NEUTRAL
POLARIZATION
POLARIZED BEAMS
PROTON-PROTON INTERACTIONS
PROTONS
SPIN