2019 Impact factor 4.389
Particles and Fields
Eur. Phys. J. C 9, 623-631
DOI 10.1007/s100529900037

The additive quark model revisited:
Hadron- and photon-induced cross sections

P. Desgrolard1 - M. Giffon 1 - E. Martynov2 - E. Predazzi3

1 Institut de Physique Nucléaire de Lyon, IN2P3-CNRS et Université Claude Bernard, 43 boulevard du 11 novembre 1918, F-69622 Villeurbanne Cedex, France
2 Bogoliubov Institute for Theoretical Physics, NAS of Ukraine, Metrologicheskaja 14b, 252143, Kiev-143, Ukraine
3 Dipartimento di Fisica Teorica - Università di Torino and Sezione INFN di Torino, Italy

Received: 23 November 1998 / Revised version: 18 December 1998 / Published online: 30 June 1999

The standard additive quark model and the ensuing counting rules are modified to take into account not only the quark-gluonic content of the Pomeron but also of the secondary Reggeons, as well as the fact that the soft Pomeron is not just a gluonic ladder. A much-improved description of pp, $\pi p$,$\gamma p$ and $\gamma \gamma$ cross sections is obtained.

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