Color-evaporation-model prediction for σ(e +e - → J/ψ + X) at B Factories

Daekyoung Kang, Jong Wan Lee, Jungil Lee

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The cross section for inclusive J/ψ production in e +e - annihilation at B factories is calculated using the color-evaporation model (CEM). The prediction can be used to estimate the fraction of inclusive J/ψ + cc̄ processes in the inclusive J/ψ production rate, which is measured by the Belle Collaboration. The color-evaporation-model prediction for the inclusive J/ψ production crosssection is shown to be about a factor of about 7-8 smaller than the values measured at the B factories. The underestimate of the CEM prediction for the inclusive J/ψ cross-section is observed to become more severe as the available phase space decreases.

Original languageEnglish
Pages (from-to)777-781
Number of pages5
JournalJournal of the Korean Physical Society
Volume47
Issue number5
Publication statusPublished - 2005 Nov

Keywords

  • B factory
  • Color-evaporation model
  • Inclusive J/ψ production

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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