Josef Pochodzalla

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The COMPASS experiment at the CERN SPS has studied the diffractive dissociation of negative pions into the π- π- π+ final state using a 190  GeV/c pion beam hitting a lead target. A partial wave analysis has been performed on a sample of 420,000 events taken at values of the squared 4-momentum transfer t' between 0.1 and 1  GeV2/c2. The well-known(More)
First measurements of the Collins and Sivers asymmetries of charged hadrons produced in deep-inelastic scattering of muons on a transversely polarized 6LiD target are presented. The data were taken in 2002 with the COMPASS spectrometer using the muon beam of the CERN SPS at 160 GeV/c. The Collins asymmetry turns out to be compatible with zero, as does the(More)
New precise results of a measurement of the elastic electron-proton scattering cross section performed at the Mainz Microtron MAMI are presented. About 1400 cross sections were measured with negative four-momentum transfers squared up to Q² = 1 (GeV/c)² with statistical errors below 0.2%. The electric and magnetic form factors of the proton were extracted(More)
Future experiments on hypernuclei γ-spectroscopy at FINUDA@DAFNE and PANDA@FAIR require the operation of germanium detectors in high magnetic fields (B ≈ 1 T). The performance of these detectors in such an environment has not been well investigated. In particular, one might expect three problems to arise: (i) breakdown of FETs in the preamplifiers, (ii)(More)
The HypHI project aims to study hypernuclei by means of collisions of stable heavy ion and rare-isotope beams on stable target materials [1, 2]. As the first step (Phase 0), the feasibility of precise hypernuclear spectroscopy with heavy ion beams will be demonstrated with 6 Li beam at 2 A GeV impinged on a 12 C target by identifying 3 Λ H, 4 Λ H and 5 Λ He(More)
theta(degree) 0 20 40 60 80 100 120 140 160 180 0 200 400 600 800 1000 1200 protons kaons pions neutrons Figure 1: Distribution of produced particles from background reactions. The Germanium detectors will be affected mainly by particles emitted at backward axial angle For the high resolution spectroscopy of excited hyper-nuclear states a position sensitive(More)
  • D. Nakajimay, B. Özelz, +27 authors S. Voltz
  • 2008
The main idea of the HypHI project is to perform precise hypernuclear spectroscopy with stable and unstable heavy ion beam at GSI and FAIR[1]. The HypHI collaboration plans the first experiment Phase 0 in 2009 to investigate the feasibility of hypernuclear spectroscopy with heavy ion beams. In the Phase 0 experiment, three sets of Scintillating Fiber(More)