SMuK 2021 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 14: Hadron Structure and Spectroscopy III
HK 14.3: Vortrag
Dienstag, 31. August 2021, 17:15–17:30, H3
Measuring Generalized Distribution Amplitudes from the pp→ π0γ channel with PANDA at FAIR — •Faiza Khalid, Stefan Diehl, and Kai Thomas Brinkmann for the PANDA collaboration — II. Physikalisches Institut, Justus Liebig Universität Gießen, 35392 Gießen, Germany.
The future PANDA experiment at FAIR with the HESR antiproton beam provides unique possibilities to study the 3D nucleon structure with exclusive channels in pp annihilation. One of the channels of interest for the measurement of Generalized Distribution Amplitudes (GDAs) is pp→ π0γ. Several simulations for different antiproton beam momenta of s = 2.5 GeV/c , s = 5 GeV/c , s = 10 GeV/c and s = 15 GeV/c were done for both the signal channel (pp→ π0γ) and for the main background channel (pp→ π0π0) to check the feasibility of the measurement. The talk will present the feasibility study for the measurement of the cos(θ) dependence of the differential cross-section for pp→ π0γ at different integrated luminosities. The cross sections have been estimated based on data, which is available in a limited kinematic range from the E760 experiment at Fermilab. Results of count rate estimates and estimates of the expected statistical uncertainty for different integrated luminosity values as well as the signal to background ratio will be presented. Different event selection cuts have been investigated to optimize the signal to background ratio while keeping a reasonable reconstruction efficiency.
*The work is supported by BMBF and HFHF