Measurement of the Production Cross-Section of Charm Mesons at High Transverse Momentum in 515-GeV/c $$\pi^{-}$$ - nucleon collisions
- Pittsburgh U.
This thesis presents the results from an investigation of the production of charmed mesons at high transverse momentum in collisions of 515 GeV/c negative pions with copper and beryllium targets. The data were taken during the 1990 fixed target run at Fermilab using the E706 spectrometer. The E706 detector consisted of a high precision charged tracking system and a finely segmented liquid argon calorimeter. The tracking system was used to reconstruct the charged particles in the event, as well as the associated vertices. The electromagnetic section of the calorimeter (EMLAC) provided precise measurements of the position and energy of the photons, as well as forming the basis for the high PT trigger. Events which produced localized high PT showers in the EMLAC were selected by the trigger and written to tape. The events which were recorded are enriched with direct photons and high PT jets. From the 1990 data, a sample of $$\sim$$150 charmed hadrons have been fully reconstructed via their displaced vertices. Due to the high PT trigger, these charm particles are also at high transverse momentum. The intent of this thesis is to present a measurement of the differential cross section of charmed particles in the PT range from 1-8 GeV/c. By extrapolating below 1 GeV/c, we also present a measurement of the total inclusive $$n\pm$$ production cross section. These results are compared with the NLO theoretical calculations, as well as with the predictions from the Pythia Monte Carlo.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1423671
- Report Number(s):
- FERMILAB-THESIS-1995-48; UMI-96-01244; 406406
- Country of Publication:
- United States
- Language:
- English
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