Color-octet {ital J}/{psi} production in the {Upsilon} decay
- Center for Particle Physics, University of Texas at Austin, Austin, Texas 78712 (United States)
- Physics Department, University of Illinois at Chicago, Illinois 60607-7059 (United States)
- Davis Institute for High Energy Physics, University of California at Davis, Davis, California 95616 (United States)
The direct production rate of {psi} in the {Upsilon} decay is shown to be dominated by the process {Upsilon}{r_arrow}{ital ggg{sup {asterisk}}} followed by {ital g}{sup {asterisk}}{r_arrow}{psi} via the color-octet mechanism proposed recently to explain the anomalous prompt charmonium production at the Fermilab Tevatron. We show that this plausibly dominant process has a branching ratio compatible with the experimental data. Further experimental study in this channel is important to test the significance of the color-octet component of the {ital c{bar c}} pair inside the {psi} system. {copyright} {ital 1996 The American Physical Society.}
- DOE Contract Number:
- FG02-84ER40173; FG03-91ER40674; FG03-93ER40757
- OSTI ID:
- 285794
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 1 Vol. 54; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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