Color-octet mechanism and J/{psi} polarization at CERN LEP
- Center for Theoretical Physics and Department of Physics, Seoul National University, Seoul 151-742 (Korea)
- Department of Physics, Hong-Ik University, Seoul 121-791 (Korea)
Polarized heavy quarkonium productions in Z{sup 0} decays are considered. We find that polarizations of the produced quarkonia are independent of that of the parent Z{sup 0} provided that one considers the energy distribution or the total production rate. Produced J/{psi}{close_quote}s via the color-octet and the color-singlet mechanisms are expected to be 19{percent} and 29{percent} longitudinally polarized, respectively. The energy dependence of {eta}{sub 1,8}(x) {equivalent_to}d{Gamma}{sub 1,8}{sup L}/dx/d{Gamma}{sub 1,8}/dx is very sensitive to the production mechanism, and, therefore, the measurement of {eta}(x){sub expt} will be an independent probe of the color-octet mechanism. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 503789
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 11 Vol. 55; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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