Resonances in 𝜂-light nucleus systems

Pramana

N G Kelkar¹  K P Khemchandani1²  M Nowakowski¹  B K Jain² 

[1] Departamento de Fisica, Universidad de los Andes, Bogota, Colombia$$;Department of Physics, University of Mumbai, Mumbai 400 098, India$$

关键词: 𝜂-mesic nuclei;    few-body equations;    time delay.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

We locate resonances in 𝜂-light nucleus elastic scattering using the time delay method. We solve few-body equations within the finite rank approximation in order to calculate the 𝑡-matrices and hence the time delay for the 𝜂- 3He and 𝜂- 4He systems. We find a resonance very close to the threshold in 𝜂- 3 He elastic scattering, at about 0.5 MeV above threshold with a width of ∼ 2 MeV. The calculations also hint at the presence of sub-threshold states in both the cases.

【 授权许可】

Unknown