Document Type
Article
Publication Date
1-1-2009
Keywords
Lepton-nucleon scattering
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||)D* /2Ejet, where E is the energy of the D * meson and p|| is the longitudinal momentum of the D * meson relative to the axis of the associated jet of energy Ejet. Jets were reconstructed using the kT 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. © SISSA 2009.
Journal Title
Journal of High Energy Physics
Volume
2009
Issue
4
DOI
https://doi.org/10.1088/1126-6708/2009/04/082
First Department
Physics
Recommended Citation
Chekanov, S.; Derrick, M.; Magill, S.; Musgrave, B.; Nicholass, D.; Repond, J.; Yoshida, R.; Mattingly, Margarita C. K.; Antonioli, P.; Bari, G.; Bellagamba, L.; Boscherini, D.; Bruni, A.; Bruni, G.; Cindolo, F.; Corradi, M.; Iacobucci, G.; Margotti, A.; Nania, R.; Polini, A.; Antonelli, S.; Basile, M.; Bindi, M.; Cifarelli, L.; Contin, A.; De Pasquale, S.; Sartorelli, G.; Zichichi, A.; Bartsch, D.; Brock, I.; and Hartmann, H., "Measurement of the Charm Fragmentation Function in D* Photoproduction at HERA" (2009). Faculty Publications. 1853.
https://digitalcommons.andrews.edu/pubs/1853
Acknowledgements
Retrieved February 22, 2021 from https://iopscience.iop.org/article/10.1088/1126-6708/2009/04/082/pdf