Pentaquark baryon production at the relativistic heavy ion collider

Lie Wen Chen, V. Greco, C. M. Ko, S. H. Lee, W. Liu

Research output: Contribution to journalArticle

46 Citations (Scopus)


Production of pentaquark Θ + baryons in central relativistic heavy ion collisions is studied in a kinetic model. Assuming that a quark-gluon plasma is produced in the collisions, we first determine the number of Θ + produced from the quark-gluon plasma using a parton coalescence model, and then take into consideration its production and absorption in subsequent hadronic matter via the reactions KN↔Θ, KN↔πΘ and πN↔K̄Θ. We find that although the final Θ + number is affected by hadronic interactions, it remains sensitive to the initial number of Θ + produced from the quark-gluon plasma, particularly in the case of a small Θ + width as imposed by the K +N and K +d scattering data. Because of small baryon chemical potential in the hot dense matter produced in these collisions, the number of produced anti-Θ is only slightly smaller than that of Θ +.

Original languageEnglish
Pages (from-to)34-40
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number1-2
Publication statusPublished - 2004 Nov 4

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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