Pion absorption above the Delta (1232) resonance

Autor: V. R. Cupps, Barry Ritchie, J. R. Comfort, P. C. Gugelot, Christopher Morris, C. Fred Moore, R.W. Fergerson, M. K. Jones, J. Tinsley, J. D. Zumbro, Ronald Ransome, J. A. McGill
Rok vydání: 1993
Předmět:
Zdroj: Physical review. C, Nuclear physics. 48(6)
ISSN: 0556-2813
Popis: Two-proton and three-proton inclusive [pi][sup +] absorption cross sections were measured for incident pion energies from 250 to 500 MeV on targets of [sup 12]C, [sup 58]Ni, [sup 90]Zr, [sup 118]Sn, and [sup 208]Pb using a large solid angle bismuth germanate detector array. Pion absorption events leading to three or more protons in the final state were observed to become more significant with increasing incident pion energy and were dominant at 500 MeV. The total absorption cross sections were inferred from analyses of the data with uncertanties of approximately 25%.
Databáze: OpenAIRE