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

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Polarized heavy quarkonium productions in Z(0) decays are considered. We find that polarizations of the produced quarkonia are independent of that of the parent Z(0) provided that one considers the energy distribution or the total production rate. Produced J/psi's via the color-octet and the color-singlet mechanisms are expected to be 19% and 29% longitudinally polarized, respectively. The energy dependence of eta(1,8)(x) = d Gamma(1,8)(L)/dx/d Gamma (1,8)/dx is very sensitive to the production mechanism, and, therefore, the measurement of eta(x)(expt) Will be an independent probe of the color-octet mechanism.
Publisher
Amer Physical Soc
Issue Date
1997-06
Language
English
Article Type
Article
Keywords

B-QUARK PRODUCTION; = 1.8 TEV; (P)OVER-BAR-P COLLISIONS; FERMILAB-TEVATRON; FRAGMENTATION; CHARMONIUM; DECAY

Citation

PHYSICAL REVIEW D, v.55, no.11, pp.6839 - 6843

ISSN
1550-7998
DOI
10.1103/PhysRevD.55.6839
URI
http://hdl.handle.net/10203/69464
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