26-30 April 2009
Palacio de Congresos de Madrid
Europe/Zurich timezone

Extraction of F2c(x,Q2) from D* cross sections at H1

28 Apr 2009, 15:40
15m
Room "SALA 8" (Palacio de Congresos de Madrid)

Room "SALA 8"

Palacio de Congresos de Madrid

Paseo de la Castellana, 99 28046 Madrid España

Speaker

Andreas Jung (DESY)

Description

The charm contribution to the proton structure, F2^c(x,Q2), is determined using the inclusive cross sections of D*+-(2010) meson production in deep-inelastic scattering at HERA. F2^c(x,Q2) is extracted from the visible D*+- cross sections in the range 5 < Q2 < 1000 GeV^2, 0.02 < y < 0.7, p_T(D*) > 1.5 GeV and |eta(D*)| < 1.5 which were measured with the H1 experiment in the HERA-II running period corresponding to an integrated luminosity of 347 pb^-1. The charm contribution to the proton structure, F2^c(x,Q2), is determined by extrapolating the visible charm cross section to the full phase space using a Next-to-Leading order QCD calculation based on DGLAP evolution and a Leading order Monte-Carlo program including parton showers based on CCFM evolution. The extrapolation uncertainties are studied varying the theory parameters like charm mass, renormalisation and factorisation scales as well as the fragmentation model.

Primary author

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