Dortmund 2006 – wissenschaftliches Programm
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T: Teilchenphysik
T 510: b-Produktion
T 510.9: Vortrag
Donnerstag, 30. März 2006, 18:20–18:35, C2-03-527
Charm production in the forward direction in Deep Inelastic Scattering with the ZEUS detector in the HERA II run period. — •F. Karstens and A. Bamberger — Physics department, H.-Herder-Str. 3, 79104 Freiburg
The ZEUS experiment is one of two general purpose colliding-beam experiments at the Hadron-Elektron-Ringanlage (HERA collider) in Deutsches Elektronensynchrotron (DESY), Hamburg. A new Micro-Vertex Detector (MVD) and a new Straw-Tube Tracker (STT) of the ZEUS experiment has been in operation since the luminosity upgrade in 2001. Both components are part of a new global tracking system. The improved tracking is used for a D∗(2010)± analysis in deep inelastic scattering (DIS) in the kinematic range of 5<Q2<1000 GeV2 and 0.02<y<0.7. D∗(2010)±s are excited states of charmed mesons, which are produced in open charm production of the photon gluon fusion. D∗(2010)±s are investigated in the Golden Channel, where the D∗(2010)± decays with strong and weak interaction in a Kaon and two Pions.
D∗(2010)±s are identified with its invariant mass, which is calculated with the rest mass assumption and the momentum of the tracks. Differential cross-sections are calculated with the background substraction method and the use of Monte Carlo simulations.
It is compared with theoretical fixed-flavour-number-scheme (FNN) next-to-leading order (NLO) predictions.