Inclusive J / $$\psi$$ Production at D0

Thesis/Dissertation · Sat Apr 01 04:00:00 EST 1995

DOI:https://doi.org/10.2172/1423676· OSTI ID:1423676

Murphy, Christopher R. ^[1]

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1. Indiana U.

We present results on inclusive $$J/\psi$$ and b-quark production in $$p\bar{p}$$ collisions at $$\sqrt{s}$$ = 1.8 TeV. The results are based on data collected at the D0 experiment during the 1992-1993 FermiLab collider run. There is excellent agreement between the differential $$J/\psi$$ cross section measured at D0 and that measured at the CDF detector. A measurement of the fraction of $$J/\psi$$ events due to b-quark decays is presented and we extract from this a measurement of the integrated b-quark cross section. The radiative decays of $$_{Xc}$$ charmonium states into the $$J/\psi$$ is discussed and we present results on the fraction of $$J/\psi$$ mesons that are due to $$_{Xc}$$ decays. We also observe that a fraction of promptly produced $$J/\psi$$ mesons is larger than the measured fraction of $$J/\psi$$ due to $$_{Xc}$$ decays and is not accounted for by existing charmonium. production models.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1423676
• Report Number(s): FERMILAB-THESIS-1995-24; UMI-95-31553; 404883
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS