2022 Impact factor 4.4
Particles and Fields
Eur. Phys. J. C 2, 159-163

Mesonic parton densities derived from constituent quark model constraints

M. Glück1 - E. Reya1 - M. Stratmann2

1 Institut für Physik, Universität Dortmund, D-44221 Dortmund, Germany
2 Department of Physics, University of Durham, Durham DH1 3LE, England

Received: 24 November 1997

Using constituent quark model constraints we calculate the gluon and sea content of pions solely in terms of their valence density and the known sea and gluon densities of the nucleon. The resulting small-x predictions for $g^{\pi}(x,Q^2)$ and $\bar{q}^{\pi}(x,Q^2)$ are unique and parameter free, being entirely due to QCD dynamics. Similar ideas are applied for calculating the gluon and sea content of kaons which, for our suggested choice of the kaon's valence densities, turn out to be identical to the ones of the pion.

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