Pion reabsorption in heavy-ion collisions interpreted in terms of the Δ capture process

Pion reabsorption in heavy-ion collisions interpreted in terms of the Δ capture process

We have measured energy-differential cross sections for π 0 production in 36Ar+ 197Au collisions at 95 MeV/u. From an analysis of spectral features due to pion final-state interactions we have estimated the cross section of the capture process Δ + N → N + N in the center-of-mass energy range s ≃2.05...

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Veröffentlicht in:Physics letters. B 1996, Vol.366 (1), p.63-68
Hauptverfasser: Holzmann, R., Schubert, A., Hlaváč, S., Kulessa, R., Niebur, W., Simon, R.S., Lautridou, P., Lefèvre, F., Marqués, M., Matulewicz, T., Mittig, W., Ostendorf, R.W., Roussel-Chomaz, P., Schutz, Y., Löhner, H., van Pol, J.H.G., Siemssen, R.H., Wilschut, H.W., Ballester, F., Díaz, J., Marín, A., Martínez, G., Metag, V., Novotny, R., Wagner, V., Québert, J.
Format: Artikel
Sprache:eng
Schlagworte:
Astrophysics
Cosmology and Extra-Galactic Astrophysics
Delta resonance
Detailed balance principle
Final-state interactions
Heavy ions
Intermediate energies
Physics
Sciences of the Universe
Subthreshold pion production
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Zusammenfassung:We have measured energy-differential cross sections for π 0 production in 36Ar+ 197Au collisions at 95 MeV/u. From an analysis of spectral features due to pion final-state interactions we have estimated the cross section of the capture process Δ + N → N + N in the center-of-mass energy range s ≃2.05−2.25 GeV . Within the frame of BUU calculations, our results support the extension of the detailed-balance principle to broad-width resonances.
ISSN:0370-2693
1873-2445
DOI:10.1016/0370-2693(95)01342-3