Pion elastic scattering from polarizedC13in the energy region of theP33resonance

Autor: Christopher Morris, M. A. Khandaker, R. Ivie, E. Insko, H. Ward, S. I. Penttilä, G. R. Burleson, S. M. Sterbenz, T. Averett, Gerald W Hoffmann, M. Purcell, D. Dehnhard, Soumya Chakravarti, Barry Ritchie, Y. F. Yen, K. Cranston, Yi Ju Yu, J. R. Comfort, J. A. Faucett, N. Tanaka, A. L. Williams, K. Johnson, Steven J. Greene, J. Görgen, C. F. Moore, J. Tinsley, B. Brinkmöller, J. M. O’Donnell, J. J. Jarmer, M. A. Franey, A. Klein, D. A. Smith, J. A. McGill, B. Berman, G. S. Kyle, H. T. Fortune, Martin L Barlett, Ricardo Alarcon
Rok vydání: 1994
Předmět:
Zdroj: Physical Review C. 50:897-908
ISSN: 1089-490X
0556-2813
DOI: 10.1103/physrevc.50.897
Popis: A new development in polarized nuclear-target technology has made it possible to measure analyzing power, Ay, in pion elastic scattering from a polarized target.[1] Such measurements provide us with information on the isoscalar spin-flip strength of the nuclear transition which is very difficult to obtain otherwise. Differential cross sections, σ(Θ), for pion elastic scattering from nuclei with non-zero spin are dominated by the spin-independent (∆S = 0) amplitudes. Contributions from the spin-dependent (∆S = 1) amplitudes are usually negligible because σ(Θ) depends on the sum of the squares of those amplitudes. However, the Ay depend on the interference on the spin-independent and spin-dependent scattering amplitudes and are therefore quite sensitive to the spin-dependent forms.
Databáze: OpenAIRE