arXiv subjects

W. L. van Neerven

Publications and source records attributed to W. L. van Neerven.

74 records · Page 5Linked to original sources

arXiv1993

Complete Next to Leading Order QCD Corrections to the Photon Structure Functions $F^γ_2(x,Q^2)$ and $F_L^γ(x,Q^2)$

We present the complete NLO QCD analysis of the photon structure functions $F_2^γ(x,Q^2)$ and $F_L^γ(x,Q^2)$ for a real photon target. In particular we study the heavy flavor content of the structure functions which is due to two different production mechanisms, namely collisions of a virtual photon with a real photon, and with a parton. We observe that the charm contributions are noticeable for $F_2^γ(x,Q^2)$ as well as $F_L^γ(x,Q^2)$ in the x-region studied.

hep-ph↗

arXiv1993

$O(α_S)$ Corrections to the Photon Structure Functions $F^γ_2(x,Q^2)$ and $F_L^γ(x,Q^2)$

We examine the QCD corrections to the structure functions $F_2^γ(x,Q^2)$ and $F_L^γ(x,Q^2)$ for a real photon target. The pointlike photon contributions from light and heavy quarks are computed through $O(αα_S)$. A parameterization of the hadronic (resolved) photon contribution is also included and a comparison is made with the present experimental data. We find that while the pointlike contributions are large for $F_2^γ(x,Q^2)$, they are the dominant part of $F_L^γ(x,Q^2)$. For $Q^2 > 50$ $({\rm GeV}/c)^2$ the charm component is as least as large as the light quark component.

hep-ph↗