Characteristics of the Hadronic Production of the $$D^{*\pm}$$ Meson (in Portuguese)
- Rio de Janeiro, CBPF
The Fermilab experiment E769, a 250 GeV /c tagged hadron beam incident on thin target foils of Be, Al,Cu, and W, measured the $$X_F$$ and $$p^2_t$$ distributions of $$D^{*\pm}$$ through the decay mode$$D^{*\pm} \to D^0 \pi^+, D^0 \to K^- \pi^+$$. Fitting the distributions to the form $$A(1 - X_F)^n$$ and $$B exp(-bp^2_t)$$, we determined $$n$$ - 3.84 ± 0.20 ± 0.06 and $$b$$ = 0. 7 48 ± 0.034 ± 0.009, respectively. We observe no significant lea.ding particle ef.~ct suggested by earlier experiments. The dependence of the total cross section on the atomic mass number was determined to be $$A^{0.98 \pm 0,05 \pm 0.04}$$ . The measurements were based on 351 ± 16 fully reconstructed $$D^{*\pm}$$ mesons induced by a $$\pi^{\pm}$$ and $$K^{\pm}$$ beam. This is the gest available sample of hadroproduced $$D^{*\pm}$$.
- 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:
- 1425818
- Report Number(s):
- FERMILAB-THESIS-1992-04; 349970
- Country of Publication:
- United States
- Language:
- Portuguese
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