Content area
Abstract
Abstract.
We present new next-to-leading-order (NLO) sets of parton distributions in real photons based on a scheme-invariant definition of the non-perturbative input. We compare the theoretical predictions with LEP data and a best fit allows us to constrain the parameters of the distributions. The shape of the gluon distribution is poorly constrained and we consider the possibility to measure it in photoproduction experiments. Three parameterizations that aim to take into account the scattering of the LEP data are proposed and compared to other NLO parameterizations.
Details
Title
New NLO parameterizations of the parton distributionsin real photons
Author
Aurenche, P 1 ; Fontannaz, M 2 ; J Ph Guillet 1
1 LAPTH, UMR 5108 du CNRS associée á l'Université de Savoie, Annecy-le-Vieux Cedex, France
2 Laboratoire de Physique Théorique, UMR 8627 CNRS, Université Paris XI, Orsay Cedex, France
1 LAPTH, UMR 5108 du CNRS associée á l'Université de Savoie, Annecy-le-Vieux Cedex, France
2 Laboratoire de Physique Théorique, UMR 8627 CNRS, Université Paris XI, Orsay Cedex, France
Pages
395-409
Publication year
2005
Publication date
Nov 2005
ISSN
14346044
e-ISSN
14346052
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2334227608
Copyright
The European Physical Journal C - Particles and Fields is a copyright of Springer, (2005). All Rights Reserved.