TH-MAS-2020-002

The P̄ANDA experiment represents the central part of the hadron physics program at the
FAIR facility that is under construction at GSI in Darmstadt. In the early stages of the
experiment, during the commissioning phase, a proton beam instead of an antiproton
beam will be provided by the accelerator and the reduced Day-1 setup will be available.
One of the first experiments that could be performed already during the commissioning
phase are cross section measurements of π 0 and η production in proton proton reactions.
The reconstruction efficiency for photons, π⁰, η and protons of the Day-1 setup has
been studied using PandaRoot simulations. In addition the full meson production chain
including baryonic resonances has been simulated and efficiencies for complete final
state reconstruction have been determined. There are some losses due to the incomplete
Day-1 setup but the relevant phase space for those reactions is covered sufficiently well.
P̄ANDA will be able to contribute to the measurement of total as well as differential meson
production cross sections with high precision. Moreover a first study on the channel
p̄p → φφπ⁰ has been performed. P̄ANDA could play an important role in confirming the
existence of the predicted 2 ++ glueball resonance in φφ and measure its properties.