Excitation of the? (1232)-resonance in proton-nucleus collisions

Autor: M.C. Lemaire, J.C. Jourdain, J. L. Boyard, M. Trzaska, Jacques Vandermeulen, T. Hennino, A. Rahmani, B. Ramstein, P. Zupranski, J. Augerat, Gerard Montarou, P. Radvanyi, J. P. Alard, Nicole Bastid, Pascal Dupieux, Ph. Gorodetzky, O. Valette, Joseph Cugnon, M.J. Parizet, B. Lucas, D. Bachelier, C. Cavata, M. Roy-Stephan, J. Gosset, A. LeMerdy, D. Pelte, J. Marroncle, J. Poitou, D. L'Hôte, P. Charmensat, D. Quassoud
Rok vydání: 1991
Předmět:
Zdroj: Zeitschrift f�r Physik A Hadrons and Nuclei. 340:325-331
ISSN: 1434-601X
0939-7922
Popis: The excitation of theΔ resonance is observed in proton collisions on C, Nb and Pb targets at 0.8 and 1.6 GeV incident energies. The mass E0 and widthΓ of the resonance are determined from the invariant mass spectra of correlated (p, π±)-pairs in the final state of the collision: The mass E0 is smaller than that of the free resonance, however by comparing to intra-nuclear cascade calculations, this reduction is traced back to the effects of Fermi motion, NN scattering and pion reabsorption in nuclear matter.
Databáze: OpenAIRE
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