HERA results on the structure of the proton
EUR PHYS J A 18:2-3 (2003) 383-388
Abstract:
A selection of results from the H1 and ZEUS experiments at HERA are reviewed, particularly in the area of deep inelastic scattering and diffraction. Quantum chromodynamics gives a good explanation of these data down to surprisingly low values of the four-momentum transfer, Q(2). Data at smaller Q(2) can be described by Regge models as well as by dipole models including parton-saturation effects. The latter can also give a unified description of many features of diffractive data.Measurement of deeply virtual Compton Scattering at HERA
Physics Letters B 573 (2003) 46-62
Neutrino factory R&D - a global perspective
J PHYS G NUCL PARTIC 29:8 (2003) 1537-1539
Abstract:
The current world status of plans for future particle-physics accelerators and accelerator research and development is outlined. The developments for a neutrino factory are placed in this context. Finally, a specific initiative relevant for Europe is discussed.Dijet angular distributions in photoproduction of charm at HERA
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 565:1-4 (2003) 87-101
Abstract:
Dijet angular distributions of photoproduction events in which a D*± meson is produced in association with one of two energetic jets have been measured with the ZEUS detector at HERA, using an integrated luminosity of 120 pb-1. Differential cross sections as a function of the angle between the charm-jet and the proton-beam direction in the dijet rest frame have been measured for samples enriched in direct or resolved photon events. The results are compared with predictions from leading-order parton-shower Monte Carlo models and with next-to-leading-order QCD calculations. The angular distributions show clear evidence for the existence of charm originating from the photon. © 2003 Published by Elsevier B.V.Leading proton production in e + p collisions at HERA
Nuclear Physics B 658:1-2 (2003) 3-46