Variable flavor number schemes versus fixed order perturbation theory for charm quark electroproduction

A. Chuvakin; J. Smith; B.W. Harris

doi:doi:10.1007/s100520000546

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2022 Impact factor 4.4

Particles and Fields

Eur. Phys. J. C 18, 547-553
DOI: 10.1007/s100520100546

Variable flavor number schemes versus fixed order perturbation theory for charm quark electroproduction

A. Chuvakin¹, J. Smith¹ and B.W. Harris²

¹ C.N. Yang Institute for Theoretical Physics, State University of New York at Stony Brook, Stony Brook, NY 11794-3840, USA
² High Energy Physics Division, Argonne National Laboratory, Argonne, IL 60439, USA

(Received: 31 October 2000 / Revised version: 8 November 2000 / Published online: 21 December 2000 -© Springer-Verlag 2000)

Abstract
Data for $D^{*\pm}(2010)$ meson electroproduction in the range $10< Q^2< 1350 {\rm GeV}^2$ has recently been presented by the ZEUS collaboration at HERA. We use these results together with previously published data for $Q^2 > 1 {\rm GeV}^2$ to test whether one can distinguish between different theoretical schemes for charm quark electroproduction. We find that up to the largest Q² measured, it is not possible to make such a differentiation. Then we point out the regions where differences between the various schemes arise.