Color-octet mechanism and J / ψ polarization at CERN LEP

Seungwon Baek, P. Ko, Jungil Lee, H. S. Song

Research output: Contribution to journalArticle

13 Citations (Scopus)


Polarized heavy quarkonium productions in Z0 decays are considered. We find that polarizations of the produced quarkonia are independent of that of the parent Z0 provided that one considers the energy distribution or the total production rate. Produced J/ ψ's via the color-octet and the color-singlet mechanisms are expected to be 19% and 29% longitudinally polarized, respectively. The energy dependence of η1,8(x) ≡ dΓ1,8 L/ dx/ dΓ1,8l dx is very sensitive to the production mechanism, and, therefore, the measurement of η(x)expt will be an independent probe of the color-octet mechanism.

Original languageEnglish
Pages (from-to)6839-6843
Number of pages5
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number11
Publication statusPublished - 1997 Jun 1
Externally publishedYes

ASJC Scopus subject areas

  • Mathematical Physics
  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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