Identified Baryon and Meson Distributions at Large TransverseMomenta from Au+Au Collisions at sqrt(s[sub NN])=200 GeV

Journal Article · Fri Oct 13 00:00:00 EDT 2006 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.97.152301· OSTI ID:928717

Abelev, B I

Transverse momentum spectra of pi pm, p and bar p up to 12GeV/c at mid-rapidity in centrality selected Au+Au collisions at sqrt sNN= 200 GeV are presented. In central Au+Au collisions, both pi pm andp(bar p) show significant suppression with respect to binary scaling atpT>4 GeV/c. Protons and anti-protons are less suppressed than pi pm,in the range 1.5<6 GeV/c. The pi-/pi+ and barp/p ratios showat most a weak pT dependence and no significant centrality dependence.The p/pi ratios in central Au+Au collisions approach the values in p+pand d+Au collisions at pT>5 GeV/c. The results at high pT indicatethat the partonic sources of pi pm, p and bar p have similar energy losswhen traversing the nuclear medium.

• Research Organization: COLLABORATION - YaleU.
• DOE Contract Number: DE-AC02-05CH11231
• OSTI ID: 928717
• Report Number(s): LBNL-61856; PRLTAO; R&D Project: NRNC; BnR: KB0201022; TRN: US0803249
• Journal Information: Physical Review Letters, Vol. 97; Related Information: Journal Publication Date: 10/13/2006; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

73
BARYONS
MESONS
PROTONS
SPECTRA
TRANSVERSE MOMENTUM