Measurement of the neutral current reaction at high Q2 in the H1 experiment at HERA II

This thesis presents inclusive ep double and single differential
cross section measurements for neutral current deep inelastic
scattering of longitudinally polarized leptons on protons as a
function of the negative four-momentum transfer squared Q2 and the
Bjorken variable x. The data were collected in the years 2003-2007
in the H1 experiment at HERA with positively and negatively
longitudinally polarized lepton beams of 27 GeV and a proton beam
of 920 GeV corresponding to the centre-of-mass energy of sqrt{s} =
319 GeV. The integrated luminosity is about 330 pb^{-1}. An
overview of the phenomenology of the deep inelastic scattering is
given and the experimental apparatus is described. The NC cross
section measurement procedure is presented and discussed in
details. The measured cross sections are used to investigate
electroweak effects at high Q2. The proton structure function xF_3,
sensitive to the valence quarks in the proton, is measured. The
polarization effects sensitive to the chiral structure of neutral
currents are investigated. The Standard Model predictions are found
to be in a good agreement with the measurement.