Color-Octet J/psi Production at Low P(T)
- SLAC
We study contributions from color-octet quarkonium formation mechanisms to J/{psi} hadroproduction at low p{sub {perpendicular}}. We include transitions of color-octet c{bar c} states into ''direct'' J/{psi} and into {chi}{sub 1,2} which decay radiatively into a J/{psi}. Together with earlier work, this calculation constitutes a complete analysis of p{sub {perpendicular}}-integrated J/{psi} production at leading twist. We find that the leading-twist contribution is not sufficient to reproduce the observed production rates and polarization of the J/{psi} and {chi}{sub 1,2}. Hence there must exist other important quarkonium production mechanisms at low p{sub {perpendicular}}.
- Research Organization:
- Stanford Linear Accelerator Center, Menlo Park, CA (US)
- Sponsoring Organization:
- USDOE Office of Science (US)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 813213
- Report Number(s):
- SLAC-PUB-9931
- Country of Publication:
- United States
- Language:
- English
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