Low-Energy Pion Production at 0° with Heavy Ions from 125 to 400 MeV/Nucleon

W. Benenson; G. Bertsch; G. M. Crawley; E. Kashy; J. A. Nolen, Jr; H. Bowman; J. G. Ingersoll; J. O. Rasmussen; J. Sullivan; M. Koike; M. Sasao; J. Péter; T. E. Ward

doi:10.1103/PhysRevLett.43.683

Low-Energy Pion Production at 0° with Heavy Ions from 125 to 400 MeV/Nucleon

W. Benenson, G. Bertsch, G. M. Crawley, E. Kashy, J. A. Nolen, Jr., H. Bowman, J. G. Ingersoll, J. O. Rasmussen, J. Sullivan, M. Koike, M. Sasao, J. Péter, and T. E. Ward

Phys. Rev. Lett. 43, 683 – Published 3 September 1979; Erratum Phys. Rev. Lett. 44, 54 (1980)

Abstract

The results of a systematic study of 0° pion production by heavy ions from 125 to 400 MeV/nucleon are presented. The dependence of the cross section on the mass number of the target, the energy of the beam, and the pion charge and energy are discussed. A striking feature of the data is an unexpectedly large $\frac{π^{-}}{π^{+}}$ ratio for pions of valocity close to the projectile velocity.