Abstract

Charm and beauty photoproduction has been studied in ep collisions at HERA with the ZEUS and H1 detectors. Heavy quarks were identified using differe nt experimental techniques. Charm was identified via the reconstruction of D* mesons, while bea uty was tagged via its semi-leptonic decay into leptons or using lifetime tagging techniques. Differential cross sections were measured and compared to leading order plus parton shower (LO+PS) Monte Carlo and next-to-leading order (NLO) QCD predictions.

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