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T: Teilchenphysik
T 404: Schwere Quarks IV
T 404.5: Talk
Monday, March 7, 2005, 17:35–17:50, TU H2033
Charm in charged current deep inelastic scattering with the ZEUS detector at HERA — •Meng Wang — Physikalisches Institut der Universität Bonn, Nußallee 12, 53115 Bonn
A measurement of charm production in charged current (CC) deep inelastic scattering (DIS) has been performed with the ZEUS detector at the HERA collider in Hamburg. The data used are e+p collisions collected at center-of-mass energies of 300 and 318 GeV in the years 1995-2000 corresponding to an integrated luminosity of 110 pb−1. The decay channel D*+ → D0πs+ with D0 → K−π+ is used to identify charm production. A handful of candidate events are observed in the presence of combinatorial background. An upper limit is set on the cross section for charm production in CC DIS for Q2 > 200 (GeV/c)2 and y < 0.9.