Inclusive dielectron production in proton-proton collisions at 2.2 GeV beam energy
Keywords
p p: inclusive reaction, HADES, spectrometer, electron: pair production, electron positron: mass spectrum, pi0: hadroproduction, eta: hadroproduction, differential cross section: measured, transverse momentum dependence, channel cross section: energy dependence, experimental results, Darmstadt SIS, p p --> positron electron anything, 2.2 GeV-kin
Abstract
Data on inclusive dielectron production are presented for the reaction p_s16p at 2.2 GeV measured with the High Acceptance DiElectron Spectrometer (HADES). Our results supplement data obtained earlier in this bombarding energy regime by DLS and HADES. The comparison with the 2.09 GeV DLS data is discussed. The reconstructed e_s16e- distributions are confronted with simulated pair cocktails, revealing an excess yield at invariant masses around 0.5 GeV/c2. Inclusive cross sections of neutral pion and eta production are obtained.
