Particle-Species Dependent Modification of Jet-Induced Correlations in Au+Au Collisions at sqrt(s_NN) = 200 GeV

Journal Article · Tue Jan 01 00:00:00 EST 2008 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.101.082301· OSTI ID:937134

Afanasiev, S. ^[1]; Awes, Terry C ^[2]; Cianciolo, Vince ^[2]; Efremenko, Yuri V ^[2]; Read, Jr, Kenneth F ^[2]; Silvermyr, David O ^[2]; Sorensen, Soren P ^[3]; Stankus, Paul W ^[2]; Young, Glenn R ^[2]

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1. Joint Institute for Nuclear Research, Dubna, Russia
2. ORNL
3. University of Tennessee, Knoxville (UTK)

Measurements in Au+Au collisions at {radical}s{sub NN} = 200 GeV of jet correlations for a trigger hadron at intermediate transverse momentum (p{sub T,trig}) with associated mesons or baryons at lower p{sub T,assoc} indicate strong modification of the away-side jet. The ratio of jet-associated baryons to mesons increases with centrality and p{sub T,assoc}. For the most central collisions, the ratio is similar to that for inclusive measurements. This trend is incompatible with in-vacuum fragmentation but could be due to jetlike contributions from correlated soft partons, which recombine upon hadronization.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 937134
• Journal Information: Physical Review Letters, Vol. 101, Issue 8; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
FRAGMENTATION
HADRONS
MESONS
MODIFICATIONS
TRANSVERSE MOMENTUM