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Sensitivity to two photon exchange in time-like form factor measurements at PANDA
Malgorzata Sudol1, Thierry Hennino1, Egle Tomasi-Gustafsson1, 2
(02/04/2009)

At PANDA (FAIR) proton time-like form factors measurements are foreseen. In this work, following detailed simulations, we study the sensitivity to possible two photon exchange contribution in the annihilation process $\bar p+p\to e^++e^-$, through the induced asymmetry in the angular distribution. Asymmetries related to systematic errors are also investigated.
1 :  IPNO - Institut de Physique Nucléaire d'Orsay
2 :  SPhN - Service de Physique Nucléaire
Physique/Physique Nucléaire Expérimentale
nucleon – form-factor – time-like
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