Studying Jets via Identified Particles in PHENIX

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A surprising excess of protons at intermediate pT, 2-5GeV/c, has been observed in Au+Au collisions at RHIC, for which the source is not known. In p+p collisions, particles at this pT arise from jet fragmentation, however the observed baryon yield in central Au+Au collisions are not compatible with the usual jet fragmentation function. Two particle Δφ{symbol} correlations are a powerful probe for quantitatively understanding the modifications to jet fragmentation from interactions with the medium. Earlier studies have shown that the excess baryons do have jet-like partners, indicating a hard scattering origin. We present new results from a systematic study of two particle correlations as a function of trigger and partner particle species, charge, pT and centrality from the high statistics Au+Au dataset. p+p collisions are also analyzed as a reference.

Original languageEnglish (US)
Pages (from-to)555-560
Number of pages6
JournalNuclear Physics A
Issue number1-4 SPEC. ISS.
StatePublished - Feb 15 2007
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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