Feasibility studies for the measurement of time-like proton electromagnetic form factors from $$\bar{p}p \rightarrow \mu ^+\mu ^-$$ at $$\overline{\text {P}}\text {ANDA}$$ at FAIR

Abstract This paper reports on Monte Carlo simulation results for future measurements of the moduli time-like proton electromagnetic form factors, $$|G_{E}|$$ | G E and $$|G_{M}|$$ M , using $$\bar{p} p \rightarrow \mu ^{+} ^{-}$$ p ¯ ? ? + - reaction at $$\overline{\text {P}}\text {ANDA}$$ P ANDA (FAIR). The factors are fundamental quantities parameterizing electric magnetic structure hadrons. work estimates statistical total accuracy with which can be measured an analysis simulated data within PandaRoot software framework. most crucial background channel is \pi ? due to very similar behavior muons pions in detector. suppression evaluated this all other relevant channels different values antiproton beam momentum. signal/background separation based a multivariate analysis, Boosted Decision Trees method. An expected subtraction included study, realistic angular distributions contribution. Systematic uncertainties considered relative factor presented.