Scaling of pseudorapidity distributions at c.m. energies up to 0.9 TeV
Abstract
New data are presented on charged particle pseudorapidity distributions for inelastic events produced at c.m. energiessqrt s =200 and 900 GeV. The data were obtained at the CERN antiproton-proton Collider operated in a new pulsed mode. The rise of the central density ρ(0) at energies up tosqrt s =900 GeV has been studied. A new form of central region scaling is found involving the density ρ n (0) for charged multiplicity n, namely that the scaled central density ρ n (0)/ ρ(0) expressed as a function of z=n/<n> is independent of s. Scaling in the fragmentation region holds to 10 20%, and the small amount of scalebreaking observed here could be accommodated within the framework suggested by Wdowcyk and Wolfendale to account for both accelerator and cosmic ray data.
- Publication:
-
Zeitschrift fur Physik C Particles and Fields
- Pub Date:
- March 1986
- DOI:
- 10.1007/BF01410446
- Bibcode:
- 1986ZPhyC..33....1A