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Title: Recent STAR Results from Neutral Pion Production in Polarized pp Collisions at {radical}(s) = 200 GeV at RHIC

Abstract

A primary goal of the STAR spin physics program is measuring the polarized gluon distribution function, {delta}g(x), accessible through the double longitudinal spin asymmetry, A{sub LL}. The STAR detector is uniquely suited for measuring A{sub LL} in a number of different final-state channels, such as inclusive jet and pion production, in polarized pp collisions. We present preliminary A{sub LL} results from RHIC run 6 for neutral pion production at mid-rapidity. These A{sub LL} measurements allow for discrimination among a number of different next-to-leading order (NLO) perturbative Quantum Chromodynamics (pQCD) predictions and provide meaningful constraints on {delta}g(x)

Authors:
 [1]
  1. Massachusetts Institute of Technology, 77 Massachusetts Ave. Cambridge, MA 02139 (United States)
Publication Date:
OSTI Identifier:
21316908
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1149; Journal Issue: 1; Conference: 18. international spin physics symposium, Charlottesville, VA (United States), 6-11 Oct 2008; Other Information: DOI: 10.1063/1.3215644; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ASYMMETRY; BROOKHAVEN RHIC; COLLIDING BEAMS; DISTRIBUTION FUNCTIONS; GEV RANGE; GLUONS; INCLUSIVE INTERACTIONS; JET MODEL; MULTIPARTICLE SPECTROMETERS; PARTICLE IDENTIFICATION; PARTICLE PRODUCTION; PARTICLE RAPIDITY; PIONS NEUTRAL; POLARIZATION; POLARIZED BEAMS; PROTON BEAMS; PROTON-PROTON INTERACTIONS; QUANTUM CHROMODYNAMICS; SPIN

Citation Formats

Hoffman, Alan. Recent STAR Results from Neutral Pion Production in Polarized pp Collisions at {radical}(s) = 200 GeV at RHIC. United States: N. p., 2009. Web. doi:10.1063/1.3215644.
Hoffman, Alan. Recent STAR Results from Neutral Pion Production in Polarized pp Collisions at {radical}(s) = 200 GeV at RHIC. United States. https://doi.org/10.1063/1.3215644
Hoffman, Alan. 2009. "Recent STAR Results from Neutral Pion Production in Polarized pp Collisions at {radical}(s) = 200 GeV at RHIC". United States. https://doi.org/10.1063/1.3215644.
@article{osti_21316908,
title = {Recent STAR Results from Neutral Pion Production in Polarized pp Collisions at {radical}(s) = 200 GeV at RHIC},
author = {Hoffman, Alan},
abstractNote = {A primary goal of the STAR spin physics program is measuring the polarized gluon distribution function, {delta}g(x), accessible through the double longitudinal spin asymmetry, A{sub LL}. The STAR detector is uniquely suited for measuring A{sub LL} in a number of different final-state channels, such as inclusive jet and pion production, in polarized pp collisions. We present preliminary A{sub LL} results from RHIC run 6 for neutral pion production at mid-rapidity. These A{sub LL} measurements allow for discrimination among a number of different next-to-leading order (NLO) perturbative Quantum Chromodynamics (pQCD) predictions and provide meaningful constraints on {delta}g(x)},
doi = {10.1063/1.3215644},
url = {https://www.osti.gov/biblio/21316908}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1149,
place = {United States},
year = {Tue Aug 04 00:00:00 EDT 2009},
month = {Tue Aug 04 00:00:00 EDT 2009}
}