Rapidity dependence of the inclusive J/psi production in $$p\bar{p}$$ collisions at $$\sqrt{s} = 1.8$$ TeV
We have studied the {ital J}/{psi} production in {ital p}{ital {anti p}} collisions at {radical}s = 1.8 TeV with the D{null} detector at the Fermilab Tevatron, using a {mu}{sup +}{mu}{sup -} data sample collected during the 1994-95 running period. We have measured the inclusive {ital J}/{psi} production cross section as a function of the {ital J}/{psi} transverse momentum, {ital P}{sub T}{sup {ital J}/{psi}} in the central and forward rapidity regions. The new measurement of the cross section {ital d{sigma}/dp}{sub T}{sup {ital J}/{psi}} for {vert_bar}{eta}{sup {ital J}/{psi}}{vert_bar} {lt} 0.6 is in a good agreement with the CDF and earlier D{null} results. The cross section measurement {ital d{sigma}/dp}{sub T}{sup {ital J}/{psi}} for 2.5 {lt} {vert_bar}{eta}{sup {ital J}/{psi}}{vert_bar} {lt} 3.7 covers the {ital p}{sub T}{sup {ital J}/{psi}} range from 1 to 16 GeV/c. We combine the measurements in several {vert_bar}{eta}{sup {ital J}/{psi}}{vert_bar} regions to discuss {ital d{sigma}/d{eta}}{sup {ital J}/{psi}} for {ital p}{sub T}{sup {ital J}/{psi}} {gt} 8 GeV/c. The data are compared with the next-to- leading order (NLO) QCD calculations, which take into account different {ital J}/{psi} production mechanisms.
- Research Organization:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
- Contributing Organization:
- D0
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 381694
- Report Number(s):
- FERMILAB-CONF-95-188-E; FERMILAB-CONF-96-249-E; oai:inspirehep.net:423590
- Country of Publication:
- United States
- Language:
- English
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