Phys. Rev. C 65, 041902(R) (2002) [5 pages]

Jet quenching and the p̅ ≳π^- anomaly in heavy ion collisions at relativistic energies

Abstract

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Ivan Vitev¹ and Miklos Gyulassy^1,2
¹Department of Physics, Columbia University, 538 West 120th Street, New York, New York 10027
²Collegium Budapest, Szentharomsag u.2, H-1014 Budapest, Hungary

Received 3 May 2001; published 3 April 2002

PHENIX data on Au+Au at √s=130A GeV suggest that p̅ yields may exceed π^- at high p_T>2 GeV/c. We propose that jet quenching in central collisions suppresses the hard PQCD component of the spectra in central A+A reactions, thereby exposing a novel component of baryon dynamics that we attribute to (gluonic) bayron junctions. We predict that the observed p̅ ≳π^- and the p>π⁺ anomaly at p_T∼2 GeV/c is limited to a finite p_T window that decreases with increasing impact parameter.

URL:

http://link.aps.org/doi/10.1103/PhysRevC.65.041902

DOI:

10.1103/PhysRevC.65.041902

PACS:

12.38.Mh, 24.85.+p, 25.75.-q

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Phys. Rev. C 65, 041902(R) (2002) [5 pages]

Jet quenching and the p̅ ≳π- anomaly in heavy ion collisions at relativistic energies

Jet quenching and the p̅ ≳π^- anomaly in heavy ion collisions at relativistic energies