Measurement of the charm fragmentation function in D* photoproduction at HERA
- Chekanov, S.
- Derrick, M.
- Magill, S.
- Musgrave, B.
- Nicholass, D.
- Repond, J.
- Yoshida, R.
- Mattingly, M. 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.
- Hartmann, H.
- Hilger, E.
- Jakob, H. -P.
- Juengst, M.
- Nuncio-Quiroz, A. E.
- Samson, U.
- Schoenberg, V.
- Shehzadi, R.
- Wlasenko, M.
- Brook, N. H.
- Heath, G. P.
- Kaur, M.
- Kaur, P.
- Singh, I.
- Capua, M.
- Fazio, S.
- Mastroberardino, A.
- Schioppa, M.
- Susinno, G.
- Pellegrino, A.
DOIAbstract
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 ne...
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