TY - JOUR
T1 - Repulsion and absorption of the Σ -nucleus potential for Σ - He 5 in the Li 6 (π-,K+) reaction
AU - Harada, Toru
AU - Honda, Ryotaro
AU - Hirabayashi, Yoshiharu
N1 - Publisher Copyright:
© 2018 American Physical Society.
PY - 2018/2/1
Y1 - 2018/2/1
N2 - We study phenomenologically inclusive spectra of the Li6(π-,K+) reaction at 1.2 GeV/c within a distorted-wave impulse approximation with the optimal Fermi-averaging π-p→K+Σ-t matrix. We attempt to clarify the property of a Σ-nucleus potential for Σ - He5 by comparing the calculated spectra with the data of the J-PARC E10 experiment. The result shows that the repulsive and absorptive components of the Σ - He5 potential provide the ability to explain the data of the continuum spectra in Σ and Λ regions; the strengths of VΣ=+30±10 MeV and WΣ=-26±2 MeV are favored within the Woods-Saxon potential, consistent with analyses for heavier nuclei. Effects of the size and potential range for Σ - He5 in the neutron excess of (N-Z)/(N+Z)= 0.2 are also discussed.
AB - We study phenomenologically inclusive spectra of the Li6(π-,K+) reaction at 1.2 GeV/c within a distorted-wave impulse approximation with the optimal Fermi-averaging π-p→K+Σ-t matrix. We attempt to clarify the property of a Σ-nucleus potential for Σ - He5 by comparing the calculated spectra with the data of the J-PARC E10 experiment. The result shows that the repulsive and absorptive components of the Σ - He5 potential provide the ability to explain the data of the continuum spectra in Σ and Λ regions; the strengths of VΣ=+30±10 MeV and WΣ=-26±2 MeV are favored within the Woods-Saxon potential, consistent with analyses for heavier nuclei. Effects of the size and potential range for Σ - He5 in the neutron excess of (N-Z)/(N+Z)= 0.2 are also discussed.
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U2 - 10.1103/PhysRevC.97.024601
DO - 10.1103/PhysRevC.97.024601
M3 - Article
AN - SCOPUS:85042119433
VL - 97
JO - Physical Review C
JF - Physical Review C
SN - 2469-9985
IS - 2
M1 - 024601
ER -