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Frankfurt 2014 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 46: Poster

HK 46.2: Poster

Thursday, March 20, 2014, 16:00–18:00, HZ Poster

Simulations of the Measurement of the Form Factor for the Ds Semileptonic Decay with the PANDA Detector — •Lu Cao and James Ritman — Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, Germany

The PANDA experiment is one of the major projects of the FAIR facility in Darmstadt and will study a wide range of physics topics in the high energy region. One of the interesting topics is the semileptonic Ds decays governed by both the weak and strong forces, where the strong interaction effects can be parameterized by the transition form factor. Techniques such as lattice QCD offer increasingly precise calculations, but as the uncertainties shrink, experimental validation of the results becomes increasingly important. The achievable performance of the PANDA detector for these types of reactions has not yet been studied in detail; however, this is expected to work very well based upon the design performance and experience with other detector systems.

This report summarizes the simulation and reconstruction status of the Ds decay chain at PANDA. In the reconstruction procedure, we focus on developing the software and evaluating the expected precision of these measurements with the Monte Carlo simulation studies of the physics performance of the PANDA detector. The related decay models in this chain are checked via Dalitz plot analysis; the present version of EvtGen in PandaRoot has been enhanced by a new model describing the Ds-> KKpi decay. With the help of theoretical predictions of the cross section, the production rate is estimated.

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