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A precision measurement of the inclusive ep scattering cross section at HERA
(2009)The European Physical Journal CA measurement of the inclusive deep inelastic neutral current e + p scattering cross section is reported in the region of four-momentum transfer squared, 12 GeV2≤Q 2≤150 GeV2, and Bjorken x, 2×10−4≤x≤0.1. The results are based on data collected by the H1 Collaboration at the ep collider HERA at positron and proton beam energies of E e =27.6 GeV and E p =920 GeV, respectively. The data are combined with previously published data, taken at ...Journal Article -
Deeply virtual Compton scattering and its beam charge asymmetry in e±p collisions at HERA
(2009)Physics Letters BA measurement of elastic deeply virtual Compton scattering γ * p → γ p using e + p and e - p collision data recorded with the H1 detector at HERA is presented. The analysed data sample corresponds to an integrated luminosity of 306 pb -1, almost equally shared between both beam charges. The cross section is measured as a function of the virtuality Q 2 of the exchanged photon and the centre-of-mass energy W of the γ * p system in the ...Journal Article -
Events with isolated leptons and missing transverse momentum and measurement of W production at HERA
(2009)The European Physical Journal CEvents with high energy isolated electrons, muons or tau leptons and missing transverse momentum are studied using the full e ± p data sample collected by the H1 experiment at HERA, corresponding to an integrated luminosity of 474 pb−1. Within the Standard Model, events with isolated leptons and missing transverse momentum mainly originate from the production of single W bosons. The total single W boson production cross section is measured ...Journal Article -
Observation of the hadronic final state charge asymmetry in high Q2 deep-inelastic scattering at HERA
(2009)Physics Letters BA first measurement is presented of the charge asymmetry in the hadronic final state from the hard interaction in deep-inelastic ep neutral current scattering at HERA. The measurement is performed in the range of negative squared four momentum transfer 100 < Q 2 < 8000 GeV 2. The difference between the event normalised distributions of the scaled momentum, x p, for positively and negatively charged particles, measured in the current region ...Journal Article -
Inclusive photoproduction of ρ0, K*0 and ϕ mesons at HERA
(2009)Physics Letters BInclusive non-diffractive photoproduction of ρ (770) 0, K * (892) 0 and φ{symbol} (1020) mesons is investigated with the H1 detector in ep collisions at HERA. The corresponding average γp centre-of-mass energy is 210 GeV. The mesons are measured in the transverse momentum range 0.5 < p T < 7 GeV and the rapidity range | y lab | < 1. Differential cross sections are presented as a function of transverse momentum and rapidity, and are compared ...Journal Article