TY - JOUR

T1 - [Formula Presented]-matrix and [Formula Presented]-matrix determination of the low-energy [Formula Presented]He and [Formula Presented]Li resonance parameters

AU - Csótó, Attila

AU - Hale, G. M.

PY - 1997/1/1

Y1 - 1997/1/1

N2 - We study the low-energy [Formula Presented] and [Formula Presented] states of [Formula Presented]He and [Formula Presented]Li in a microscopic cluster model. The scattering phase shifts of Bond [Formula Presented] and of Schwandt [Formula Presented], respectively, are well reproduced. We determine the resonance parameters by localizing the poles of the analytically continued [Formula Presented] matrix at complex energies. Our results differ from conventional [Formula Presented]-matrix resonance parameters, that were extracted from experimental data using the definition of a resonance based on the positions and widths of reaction cross section peaks. However, they nicely agree with the results of an extended [Formula Presented]-matrix method that works at complex energies.

AB - We study the low-energy [Formula Presented] and [Formula Presented] states of [Formula Presented]He and [Formula Presented]Li in a microscopic cluster model. The scattering phase shifts of Bond [Formula Presented] and of Schwandt [Formula Presented], respectively, are well reproduced. We determine the resonance parameters by localizing the poles of the analytically continued [Formula Presented] matrix at complex energies. Our results differ from conventional [Formula Presented]-matrix resonance parameters, that were extracted from experimental data using the definition of a resonance based on the positions and widths of reaction cross section peaks. However, they nicely agree with the results of an extended [Formula Presented]-matrix method that works at complex energies.

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U2 - 10.1103/PhysRevC.55.536

DO - 10.1103/PhysRevC.55.536

M3 - Article

AN - SCOPUS:84856134564

VL - 55

SP - 536

EP - 539

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

SN - 0556-2813

IS - 1

ER -