Eur. Phys. J. C 19, 373-377
DOI: 10.1007/s100520100606

Does the efficiency of high energy collisions depend on a hard scale?

A.V. Kisselev and V.A. Petrov

Institute for High Energy Physics, 142281 Protvino, Russia

(Received: 29 November 2000 / Revised version: 21 December 2000 / Published online: 15 March 2001 -© Springer-Verlag 2001)

Abstract
The multiplicity of charged hadrons in the current fragmentation region of both the c.m.s. and the Breit frame of deep inelastic scattering is calculated and compared with the HERA data. The results are in agreement with Yang's hypothesis that the efficiency of high energy processes increases at larger momentum transfer, although the effect is rather weak numerically at present values of Q².

© Società Italiana di Fisica, Springer-Verlag 2001