Studying diquark structure of heavy baryons in relativistic heavy ion collisions

S. Yasui, S. H. Lee, K. Ohnishi, I. K. Yoo, C. M. Ko

Research output: Contribution to journalArticlepeer-review


We propose the enhancement of Λc yield in heavy ion collisions at RHIC and LHC as a novel signal for the existence of diquarks in the strongly coupled quark-gluon plasma produced in these collisions as well as in the Λc. Assuming that stable bound diquarks can exist in the quark-gluon plasma, we argue that the yield of Λc would be increased by two-body collisions between [ud] diquarks and c quarks, in addition to normal three-body collisions among u, d and c quarks. A quantitative study of this effect based on the coalescence model shows that including the contribution of diquarks to Λc production indeed leads to a substantial enhancement of the Λc/D ratio in heavy ion collisions.

Original languageEnglish
Pages (from-to)2254-2258
Number of pages5
JournalModern Physics Letters A
Issue number27-30
Publication statusPublished - 2008 Sept 30

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Astronomy and Astrophysics
  • General Physics and Astronomy


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