The Feynman x dependence of D± mesons in π- nucleon interactions
- Yale Univ., New Haven, CT (United States)
The xp distribution of D± was measured from Fermilab experiment E769 using the decay mode D± → K∓π±π±. The experiment was performed using a 250 Ge V tagged hadron beam incident on thin target foils of Be, Al, Cu and W. The measurement was based 554 ± 33 reconstructed D± mesons from 200 million triggers induced by a π- beam. Fitting the distribution to the form C(l - lxFl)n, the fit parameter n was determined to be 3.21 ± 0.24. However, we observed no significant leading particle effect suggested by earlier experiments. We also observed that the XF distribution does not dramatically depend on atomic number. Our result is consistent with the perturbative QCD predictions.
- Research Organization:
- Fermi National Accelerator Lab. (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:
- 1156323
- Report Number(s):
- UMI--92-21459
- Country of Publication:
- United States
- Language:
- English
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