2022 Impact factor 4.4
Particles and Fields

Eur. Phys. J. C 24, 555-560 (2002)
DOI: 10.1007/s10052-002-0991-1

Massive $c{\bar c}g$-calculation in diffractive DIS and diffractive D*-production at HERA

J. Bartels1, H. Jung2 and A. Kyrieleis1

1  II. Institut für Theoretische Physik, Universität Hamburg, 22761 Hamburg, Germany
2  Department of Physics, Lund University, 22100 Lund, Sweden

(Received: 23 April 2002 / Published online: 21 June 2002 )

We calculate the cross section for $c{\bar c}g$-production in diffractive DIS with finite quark masses at zero momentum transfer t. The calculation is done in the leading log(1/ $x_{\mathbb{P} }$) and is valid in the region of high diffractive masses M (small $\beta$). We apply our cross section formula including both $c{\bar c}$- and $c{\bar c}g$ in a Monte Carlo simulation to diffractive $D^{*\pm}$ meson production at HERA. We compare our predictions to results of H1 using three parameterizations for the unintegrated gluon density.

© Società Italiana di Fisica, Springer-Verlag 2002