Double-Longitudinal Spin Asymmetry in Non-Identified Charged Hadron Production in pp Collisions {radical}(s) = 62.4 GeV at PHENIX

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

DOI:https://doi.org/10.1063/1.3215643· OSTI ID:21316907

Datta, Amaresh ^[1]

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1. University of Massachusetts, Amherst, MA, 01003 (United States) and Brookehaven National Laboratory, Bldg 510C, Upton, NY, 11973 (United States)

Charged hadron asymmetry measurements at PHENIX are interesting because of their possible sensitivity to both the sign and the magnitude of {delta}G. Hadron production in pp scattering at {radical}(s) = 62.4 GeV with transverse momentum <5 GeV/c is dominated by quark-gluon scattering at leading order in perturbative QCD, providing sensitivity to the gluon helicity distribution in the proton. Within the PHENIX central arm pseudo-rapidity coverage of -0.35<{eta}<0.35, these measurements probe the scattering of partons with momentum fraction 0.05-0.2. The double longitudinal spin asymmetry of non-identified charged hadrons will provide new data points for extracting gluon polarization.

• OSTI ID: 21316907
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1149; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
GEV RANGE
GLUONS
HELICITY
MULTIPARTICLE SPECTROMETERS
PARTICLE IDENTIFICATION
PARTICLE PRODUCTION
PARTICLE RAPIDITY
PARTICLE STRUCTURE
POLARIZATION
PROTON-PROTON INTERACTIONS
PROTONS
QUANTUM CHROMODYNAMICS
QUARK-GLUON INTERACTIONS
QUARKS
SPIN
TRANSVERSE MOMENTUM