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Investigation of pion absorption in heavy ion induced subthreshold pi0 production

Mayer, R.S. ; Henning, W. ; Holzmann, R. ; et al.
Phys.Rev.Lett. 70 (1993) 904-907, 1993.
Inspire Record 339110 DOI 10.17182/hepdata.42032

We present results from an experimental study of reabsorption effects in subthreshold π0 production in the reaction Xe129+197Au at 44 MeV/nucleon. Within the picture of pion generation in nucleon-nucleon scattering we deduce, from our data and from a comparison with the systematics of production cross sections available for lighter reaction systems, information on the π0 absorption length in nuclear matter. For the π0 kinetic-energy range ≃5–100 MeV the energy-averaged λabs and its momentum dependence are obtained, and compared with optical-model calculations.

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