Atomic mass dependence of Ξ- and Ξ¯+ production in central 250 GeV π--nucleon interactions

Phys. Rev. D 56, 6003 – Published 1 November 1997
G. A. Alves et al. (Fermilab E769 Collaboration)


We present a measurement of the atomic mass dependence of central Ξ- and Ξ¯+ production. It is measured using a sample of 22 459 Ξ-’s and Ξ¯+’s produced in collisions between a 250 GeV π- beam and targets of beryllium, aluminum, copper, and tungsten. The relative cross sections are fit to the two parameter function σ0Aα, where A is the atomic mass. We measure α=0.924±0.020±0.025, for Feynman x in the range -0.09<xF<0.15.


  • Received 26 March 1997
  • Published in the issue dated 1 November 1997

© 1997 The American Physical Society

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