Exclusive spin-2 glueball production associated with J/ψ from e +e- annihilation

Taewon Kim, Jungil Lee

Research output: Contribution to journalArticle

Abstract

A recent analysis of the angular distribution of J/ψ produced with a resonance in e+e- annihilation by the Belle Collaboration disfavored the scenario of spin-0 glueball G0 production associated with J/ψ. This had been introduced as a possible solution for the large discrepancy between theory and experiment in the cross section for e +e- → J/ψ + ηc. The cross section and the angular distribution for the spin-2 glueball (G2) process e+e- → J/ψ + G2 is calculated by extending a previous study of the spin-0 case. The upper bound on the cross section is comparable to the leading-order nonrelativistic-quantum- chromodynamics predictions of σ(e+e- → J/ψ + ηc). The angular distribution of the process e +e- → J/ψ + G2 is proportional to 1 + cos2 θ*, which is consistent with the Belle measurement.

Original languageEnglish
Pages (from-to)1935-1938
Number of pages4
JournalJournal of the Korean Physical Society
Volume49
Issue number5
Publication statusPublished - 2006 Nov

Keywords

  • Glueball
  • J/ψ
  • η

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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