DOI: 10.1140/epjc/s2002-01050-1
A NLO calculation of the hadron-jet cross section in photoproduction reactions
M. Fontannaz1, J.Ph. Guillet2 and G. Heinrich31 Laboratoire de Physique Théorique LPT (Unité Mixte de Recherche 8627 du CNRS) , Université de Paris XI, Bâtiment 210, 91405 Orsay, France
2 Laboratoire d'Annecy-Le-Vieux de Physique Théorique LAPTH (Unité Mixte de Recherche 5108 du CNRS, associée à l'Université de Savoie) , Chemin de Bellevue, B.P. 110, 74941 Annecy-le-Vieux, France
3 Department of Physics, University of Durham, Durham DH1 3LE, UK
(Received: 25 June 2002 / Published online: 18 October 2002 )
Abstract
We study the photoproduction of large
pT charged
hadrons in
e p
collisions, both for the inclusive case and for the case
where a jet in the final state is also measured.
Our results are obtained by a NLO generator of
partonic events. We discuss the sensitivity
of the cross section to the renormalisation and factorisation
scales,
and to various fragmentation function parametrisations.
The possibility to constrain the parton densities in the proton
and in the photon is assessed.
Comparisons are made with H1 data for inclusive charged hadron
production.
© Società Italiana di Fisica, Springer-Verlag 2002
