Quasi-free π0 photoproduction from the bound nucleon

Kossert, K. et al. (2004) Quasi-free π0 photoproduction from the bound nucleon. European Physical Journal A, 19(3), pp. 391-399. (doi: 10.1140/epja/i2003-10130-3)

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. Differentialcross-sections for quasi-free π0 photoproduction from the proton and neutron bound in the deuteron have been measured for Eγ = 200–400 MeV at θlab γ = 136.2◦ using the Glasgow photon tagger at MAMI, the Mainz 48 cm Ø×64 cm NaI(Tl) photon detector and the G¨ottingen SENECA recoil detector. For the proton measurements made with both liquid-deuterium and liquid-hydrogen targets allow direct comparison of “free” π0 photoproduction cross-sections as extracted from the bound-proton data with experimental free cross-sections which are found to be in reasonable agreement below 320 MeV. At higher energies the “free” cross-sections extracted from quasi-free data are significantly smaller than the experimental free cross-sections and theoretical predictions based on multipole analysis. For the first time, “free” neutron cross-section have been extracted in the ∆-region. They are also in agreement with the predictions from multipole analysis up to 320 MeV and significantly smaller at higher photon energies.

Item Type:Articles
Glasgow Author(s) Enlighten ID:McGeorge, Dr John and Seitz, Dr Bjoern and Annand, Dr John and Rosner, Professor Guenther
Authors: Kossert, K., Camen, M., Wissmann, F., Ahrens, J., Annand, J.R.M., Arends, H.-J., Beck, R., Caselotti, G., Petrun'kin, V.A., Rosner, G., Schumacher, M., Seitz, B., Smend, F., Thomas, A., Weihofen, W., Zapadtka, F., Grabmayr, P., Jahn, O., Jennewein, P., Levchuk, M.I., L'vov, A.I., McGeorge, J.C., and Natter, A.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:European Physical Journal A
ISSN (Online):1434-601X

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