- Author
-
S. Chekanov
[Unknown] et al.
G. Grigorescu
A. Keramidas
E. Koffeman
P. Kooijman
A. Pellegrino
H. Tiecke
M. Vázquez
L. Wiggers - Year
- 2009
- Title
- Measurement of the charm fragmentation function in D* photoproduction at HERA
- Journal
- The Journal of High Energy Physics
- Volume | Issue number
- 2009 | 4
- Pages (from-to)
- 082
- Number of pages
- 25
- Document type
- Article
- Faculty
- Faculty of Science (FNWI)
- Institute
- Institute for High Energy Physics (IHEF)
- Abstract
-
The charm fragmentation function has been measured in D* photoproduction with the ZEUS detector at HERA using an integrated luminosity of 120 pb(-1). The fragmentation function is measured versus z = (E + p(parallel to))(D)* / 2E(jet), where E is the energy of the D* meson and p(parallel to) is the longitudinal momentum of the D* meson relative to the axis of the associated jet of energy E-jet. Jets were reconstructed using the k(T) clustering algorithm and required to have transverse energy larger than 9GeV. The D* meson associated with the jet was required to have a transverse momentum larger than 2GeV. The measured function is compared to different fragmentation models incorporated in leading-logarithm Monte Carlo simulations and in a next-to-leading-order QCD calculation. The free parameters in each fragmentation model are fitted to the data. The extracted parameters and the function itself are compared to measurements from e(+)e(-) experiments.
- URL
- go to publisher's site
- Language
- English
- Persistent Identifier
- https://hdl.handle.net/11245/1.316213
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