Measurement of inclusive and dijet D* meson cross sections in photoproduction at HERA

Abstrakt

The inclusive photoproduction of D* mesons and of D*-tagged dijets is investigated with the H1 detector at the ep collider HERA. The kinematic region covers small photon virtualities Q(2) 1.8 GeV.

The heavy quark production process is further investigated in events with at least two jets with transverse momentum p(T) (jet) > 3.5 GeV each, one containing the D* meson. Differential cross sections for D*-tagged dijet production and for correlations between the jets are measured in the range vertical bar eta(D*)vertical bar 2.1 GeV.

The results are compared with predictions from Monte Carlo simulations and next-to-leading order perturbative QCD calculations.

Klíčová slova

• heavy flavor production
• lead/scintillating-fiber calorimeter
• deep-inelastic scattering
• initial-state radiation
• parton distributions
• perturbation-theory
• fragmentation functions
• leading order
• ep scattering
• qcd coherence