2004/11/18 by B. Krusche
Physics and Astronomy · #Atomic physics #Component (thermodynamics) #Context (archaeology) #Deuterium #Hadron #Meson #Nuclear physics #Nuclear physics research studies #Optics #Particle physics #Particle physics theoretical and experimental studies #Photon #Physics #Quantum Chromodynamics and Particle Interactions #Resonance (particle physics) #nucl-ex
paper · pdf · doi:10.1016/j.ppnp.2004.12.002
published as Prog.Part.Nucl.Phys. 55 (2005) 46-70 · Proceedings of International School of Nuclear Physics, 26th Course, Lepton Scattering and the Structure of Hadrons and Nuclei, Erice-Sicily, Italy 16. - 24. September 2004, to be published in Prog. Part. Nucl. Phys
arxiv created 2004/11/18 · openalex publication_date 2005/03/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Recent experimental results for the in-medium properties of hadrons obtained with photoproduction of mesons from nuclei are discussed. The experiments were done with the TAPS detector at the tagged photon beam of the MAMI accelerator in Mainz. Measured were the final states πo X, ηX, 2πoX, and πoπ±X for 12C, 40Ca, 93Nb, and 208Pb up to the second resonance region. The results were used for an investigation of the in-medium properties of the P33(1232), the P11(1440), the D13(1520), and the S11(1535) resonances. It was found that the cross sections can be spilt into a component which originates from the low density surface region of the nuclei and a component which scales like the nuclear volume. The energy dependence of the surface component is strikingly similar to the deuteron, it shows a clear signal for the second resonance peak. The volume component is lacking this peak and shows an enhancement at intermediate energies. Furthermore the measurement of coherent η-photoproduction and the final state pπo from 3He is discussed in the context of the search for η-mesic nuclei.