Nuclear Modification Factors for Hadrons At Forward and Backward Rapidities in Deuteron-Gold Collisions at {radical}(s{sub NN}) = 200 GeV

Journal Article · Thu Oct 06 04:00:00 EDT 2005 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2122038· OSTI ID:20726439

Chun, Zhang ^[1]

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1. Oak Ridge National Laboratory, Oak Ridge, TN 37831 (United States)

We report on charged hadron production in deuteron-gold reactions at {radical}(s{sub NN}) = 200 GeV. Our measurements in the deuteron-direction cover 1.4 < {eta} < 2.2, referred to as forward rapidity, and in the gold-direction -2.0 < {eta} < -1.4, referred to as backward rapidity, and a transverse momentum range pT = 0.5 - 4.0 GeV/c. We compare the relative yields for different deuteron-gold collision centrality classes. We observe a suppression relative to binary collision scaling at forward rapidity, sensitive to low momentum fraction (x) partons in the gold nucleus, and an enhancement at backward rapidity, sensitive to high momentum fraction partons in the gold nucleus.

• OSTI ID: 20726439
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 792; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COMPARATIVE EVALUATIONS
DEUTERON REACTIONS
DEUTERONS
GEV RANGE
GLUONS
GOLD 197 TARGET
NUCLEAR REACTION YIELD
PARTICLE PRODUCTION
PARTICLE RAPIDITY
QUARKS
TRANSVERSE MOMENTUM