Charm production at HERA

Abstract

The HERA collider circulates beams of electrons (positrons) and protons at energies of 27.5 and 820GeV respectively. The ep centre of mass energy for collisions between the beams is 300GeV. The largest cross-section processes observed in these collisions are photoproduction reactions, where the e beam acts as a source of almost real (Q ≪ 1GeV) photons… (More)

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