J.B. Dainton

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}}

RADIAL WIRE DRIFT CHAMBERS FOR THE H1 FORWARD TRACK DETECTOR AT HERA: DESIGN, CONSTRUCTION AND PERFORMANCE

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

Simultaneous track reconstruction and electron identification in the H1 radial drift chambers

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

Precision reconstruction of charged tracks with simultaneous electron identification in a gaseous detector using transition radiation

e^{\pm}p

e+- identification using the drift chambers and transition radiators of the H1 forward track detector

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

Electron identification in the H1 radial wire drift chambers

tu\gamma

Spatial precision of H1 radial wire drift chambers using gas mixtures suitable for transition radiation detection

coupling is investigated. Decays of top quarks into a b quark and a W boson are considered in the leptonic and the hadronic decay channels of the W. Both a cut-based analysis and a multivariate likelihood analysis are performed to discriminate anomalous top quark production from Standard Model background processes. In the leptonic channel, 5 events are found while 1.31