Abstract
We measure the differential cross section with respect to Feynman-x () and transverse momentum () for charm meson production using targets of Be, Al, Cu, and W. In the range 0.1<<0.7, dσ/ is well fit by the form (1- with n=3.9±0.3. The difference between n values for and is 1.1±0.7. However, we find an asymmetry of 0.18±0.06 favoring the production of compared to . In the lower range, <2 GeV, dσ/ is well fit by the form exp(-b×) with b=1.03±0.06 , while in the higher range, 0.8 to 3.6 GeV, it is well fit by the form exp(-b’×) with b’=2.76±0.08 . The shape of the differential cross section has no significant dependence on atomic mass of the target material.
- Received 8 October 1992
DOI:https://doi.org/10.1103/PhysRevLett.69.3147
©1992 American Physical Society