A Study of the Hadronic Production of $D^0$ and $$\overline{D}\,{^0}$$ Mesons: $$x_F$$ and $$p_t$$ Distributions (in Portuguese)
- Rio de Janeiro, CBPF
Using a 250 Ge V hadron beam incident on thin targets foils of Be, Al, Cu and W, the $$x_F$$ and $$p_t$$ distributions of $D^0$ and $$\bar{D}^0$$ were measured from Fermilab experiment E769 using the decay mode $$D^0 \to K^- \pi^+$$ and c.c. The measurements were made with the $$\pi^-$$ induced sample, 607 ± 29 events. Fitting the $$x_F$$ distribution to (1- $$x_F)^{\eta}$$ it was measured $$\eta$$ = 3.86 ± 0.25 ± 0.10 for $$D0/\bar{D}^0$$ , $$\eta$$ = 3.89 ± 0.40 for $D^0$ and $$\eta$$ = 3.74 ± 0.34 for $$\bar{D}^0$$ • Fitting the $$p^2_t$$ distribuition to exp $$bp^2_t$$;, it was measured $$b$$ = 1.05 ± 0.06 ± 0.02 for $$DO/\bar{D}^0$$ $$b$$ = 1.12 ± 0.09 for $D^0$ and $$b$$ = 1.00 ± 0.07 for $$\bar{D}^0$$. The $$x_F$$ distribution is consistent with the perturbative QCD calculations.
- 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:
- 1425819
- Report Number(s):
- FERMILAB-THESIS-1992-03; 349969
- Country of Publication:
- United States
- Language:
- Portuguese
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