S. Baumgartner

Measurement of F-2(c(c)over-bar) and F-2(b(b)over-bar) at high Q(2) using the H1 vertex detector at HERA

Abstract.Measurements are presented of inclusive charm and beauty cross sections in e + p collisions at HERA for values of photon virtuality Q2 > 150 GeV2 and of inelasticity 0.1 < y < 0.7. The charm and beauty fractions are determined using a method based on the impact parameter, in the transverse plane, of tracks to the primary vertex, as measured by the H1 vertex detector. The data are divided into four regions in Q2 and Bjorken x, and values for the structure functions

Search for single top quark production in ep collisions at HERA

F_2^{c\bar{c}}

Inclusive dijet production at low Bjorken-x in deep inelastic scattering

and

Multi-electron production at high transverse momenta in ep collisions at HERA

F_2^{b\bar{b}}

Performance of the H1 fast track trigger - operation and commissioning results

are obtained. The results are found to be compatible with the predictions of perturbative quantum chromodynamics.

First Results from the Third Level of the H1 Fast Track Trigger

Abstract.A search for single top quark production is performed in