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Diffractive photoproduction of J/ψ mesons with large momentum transfer at HERA
(2003)Physics Letters BThe diffractive photoproduction of J/ψ mesons is measured with the H1 detector at the ep collider HERA using an integrated luminosity of 78 pb -1. The differential cross section dσ(γp → J/ψY)/dt is studied in the range 2 < |t| < 30 GeV2, where t is the square of the four-momentum transferred at the proton vertex. The cross section is also presented as a function of the photon-proton centre-of-mass energy Wγp in three t intervals, spanning ...Journal Article -
Isolated electrons and muons in events with missing transverse momentum at HERA
(2003)Physics Letters BJournal Article -
Measurement of inclusive jet cross sections in photoproduction at HERA
(2003)The European Physical Journal CInclusive jet cross sections are measured in photoproduction at HERA using the H1 detector. The data sample of e+p→e++jet+X events in the kinematic range of photon virtualities Q2≤1GeV2 and photon-proton centre-of-mass energies 95≤Wγp≤285GeV represents an integrated luminosity of 24.1pb−1. Jets are defined using the inclusive k⊥ algorithm. Single- and multi-differential cross sections are measured as functions of jet transverse energy E ...Journal Article