München 2006 – wissenschaftliches Programm

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HK: Physik der Hadronen und Kerne

HK 21: Postersitzung

HK 21.3: Poster

Dienstag, 21. März 2006, 15:30–17:00, P

Study of the parity violation in the Δ(1232) region — •Luigi Capozza — Institut für Kernphysik, Johann-Joachim-Becher-Weg 45, 55099 Mainz

A measurement of the parity violation (PV) asymmetry in electron-proton scattering using a polarised electron beam is performed at MAMI. The experimental apparatus is able to detect electrons, that are scattered by the protons both elastically and inelastically. Contributions to the inelastic electron energy spectrum arise from the excitation of the Δ(1232) resonance and from other processes like non-resonant pion production and radiative tail from the elastic scattering. The γ’s produced in the target are also a source of background, since the detector does not distinguish between electrons and photons of the same energy. In order to study the PV in the excitation if the Δ(1232) resonance, it is important to understand the energy spectrum in the corresponding region. The aim of this work is a simulation including all relevant processes and the detailed detector response in order to extract an estimate of the PV asymmetry in the Δ(1232) region.