5 papers
How to measure the pion structure function at HERA
H. Holtmann, G. Levman, N. N. Nikolaev +2
We suggest a method of determination of the pion structure function down to x \simeq 10^{-4} based on semi-exclusive deep inelastic scattering off protons. The idea is to exploit t…
Testing the meson cloud in the nucleon in Drell-Yan processes
A. Szczurek, M. Ericson, H. Holtmann +1
We discuss the present status of the \bar u-\bar d asymmetry in the nucleon and analize the quantities which are best suited to verify the asymmetry. We find that the Drell-Yan asy…
Flavour and Spin of the Proton and the Meson Cloud
H. Holtmann, A. Szczurek, J. Speth
We present a complete set of formulas for longitudinal momentum distribution functions (splitting functions) of mesons in the nucleon. It can be applied in the framework of convolu…
Mesonic Corrections to the Shape of Quark Distributions
F. M. Steffens, H. Holtmann, A. W. Thomas
We compute the full x - dependence of the proton and neutron spin structure functions in the MIT bag model, including the effect of gluon exchange and the meson cloud. Impressive a…
Pion Content of the Nucleon as seen in the NA51 Drell-Yan experiment
H. Holtmann, N. N. Nikolaev, J. Speth +1
In a recent CERN Drell-Yan experiment the NA51 group found a strong asymmetry of and densities in the proton at . We interpret this result as a decis…