Measurement of charm production in deep inelastic scattering with the ZEUS detector

Abstract

We present measurements of charm production in DIS using the ZEUS detector. Data with an integrated luminosity of 83 pb${}^{-1}$ have been analysed. For the channel $D^{\ast +}\to D^0{\pi }_s^{+}\to K^{-}{\pi }^{+}{\pi }_s^{+}(+c.c.)$ a cross section has been extracted, differential in the kinematical variables $Q^2$ and Bjorken $x$. In addition the decay $\overline{c}q\to e^{-}{\overline{\nu }}_{e}X$ has been studied in a data sample of an integrated luminosity of 34 pb${}^{-1}$. This results in a cross section, differential in $Q^2$,$x$ and $W$ of the event and in $p_T$ and $\eta$ of the decay electron. The structure function f2-charm has also been determined for this channel. All measured cross sections show good agreement with NLO pQCD predictions from HVQDIS.

arXiv comment4 pages, 4 figures. As presented at DIS01 Bologna, Italy