Eur. Phys. J. C 25, 277-286 (2002)
Recent experimental data and the size of the quark in the constituent quark modelS. Bondarenko1, E. Levin1 and J. Nuiri2
1 HEP Department, School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Science, Tel-Aviv University, 69978 Ramat Aviv, Israel
2 Research Institute for Particle and Nuclear Physics, P.O. Box 49, 1525 Budapest, Hungary
(Received: 14 April 2002 / Published online: 9 August 2002 )
We use the constituent quark model (CQM) to describe CDF data on double parton cross section and HERA data on the ratio cross section of elastic and inelastic diffractive productions. Our estimate shows that the radius of the constituent quark turns out to be rather small, GeV -2, in accordance with the assumption on which CQM is based.
© Società Italiana di Fisica, Springer-Verlag 2002