Heidelberg 2015 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 27: Hadron Structure and Spectroscopy 5

HK 27.3: Vortrag

Dienstag, 24. März 2015, 15:15–15:30, T/SR19

simulation of D_s semileptonic decay with the PANDA detector — •Lu Cao¹ and James Ritman^1,2 for the PANDA collaboration — ¹Forschungszentrum Jülich GmbH — ²Ruhr-Universität Bochum

The PANDA experiment will study a wide range of physics topics with beams of antiprotons incident on fixed proton or complex nuclei targets. One of the interesting issues is the D_s semileptonic decay, which is governed by both the weak and strong forces. Here 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 full 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 similar detector systems.

We evaluate the performance in the measurement of the semileptonic decay form factor of D_s⁺→η e⁺ν_e. The kinematics of the neutrino have been reconstructed with a complete simulation model of the detector and reconstruction tools. In the reconstruction procedure, we focus on developing the software and evaluating the expected precision. This talk summarizes the simulation and reconstruction status of the D_s decay chain. With theoretical predictions of the cross section, we obtain a preliminary estimate of the expected count rate for the future data taking.