A. Bunyatyan

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}}

Measurement of the diffractive longitudinal structure function

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

Measurement of D ∗± meson production and determination

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

Prompt photons in photoproduction at HERA The H1 Collaboration

e^{\pm}p

Strangeness production at low Q 2 in deep-inelastic ep scattering

collisions at HERA. The search exploits data corresponding to an integrated luminosity of 118.3 pb-1. A model for the anomalous production of top quarks in a flavour changing neutral current process involving a