Frankfurt 2014 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 52: Hadronenstruktur und -spektroskopie
HK 52.4: Vortrag
Freitag, 21. März 2014, 12:00–12:15, HZ 1+2
Feasibility studies of p p → e+ e− for the measurement of proton form factors at PANDA — •Alaa Dbeyssi1,2, Frank E. Maas1,3, Luigi Capozza1, Bertalan Feher1, Dmitry Khaneft1, Paul Larin1, Dexu Lin1, Cristina Morales1, Maria Carmen Mora Espi1, Oliver Noll1, Roberto Perez1, David Rodriguez1, Roserio Valente1, Manuel Zambrana1, Iris Zimmermann1, Egle Tomasi-Gustafsson2, and Dominique Marchand2 for the PANDA collaboration — 1Helmholtz-Institut Mainz, Germany — 2Institut de Physique Nucleaire, Orsay, France — 3GSI, 64291 Darmstadt, Germany
Electromagnetic form factors of hadrons are fundamental quantities which describe the structure and the internal dynamics of these system. The electromagnetic structure of the proton is parametrized in terms of electric GE and magnetic GM form factors. The channels p p ↔ e+ e− allow to access the Time-Like region. At the future accelerator complex FAIR, in Darmstadt, the PANDA (antiProton ANnihilation at DArmstadt) collaboration plans to measure proton Time-Like form factors using an antiproton beam of momentum up to 15 GeV/c. Feasibility studies of the reaction p p → e+ e− for the Time-Like proton form factor measurements at PANDA are presented here. The background reactions are also studied, in particular the p p → π+ π− channel. The results obtained from a realistic Monte Carlo simulation using the simulation framework of the experiment (PANDARoot) show that the proton form factors can be measured at PANDA with unprecedented accuracy.