R-matrix and K-matrix analysis of elastic α-α scattering

✍ Scribed by J. Humblet; A. Csótó; K. Langanke

• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 554 KB
• Volume: 638
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(98)00419-9

✦ Synopsis

The R-and K-matrix parametrizations are analyzed and compared for the elastic a-a scattering at center-of-mass energies below 40 MeV. The two parametrizations differ in their definitions of the resonance energy which can lead to quite different results. The physical values of the best-fit parameters are compared with those computed for a potential model. The existence of a broad resonance near 9 MeV is not supported by the data or by the potential model. We discuss the positive and negative aspects for both parametrizations.