Hyperon properties in finite nuclei using realistic YN interactions |
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| Institution: | 1. Departament d''Estructura i Constituents de la Matèria, Universitat de Barcelona, E-08028 Barcelona, Spain;2. Nordita, Blegdamsvej 17, DK-2100 Copenhagen Ø, Denmark;1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;3. Cyclotron Institute and Department of Physics and Astronomy, Texas A&M University, College Station, TX 77843-3366, USA;4. Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China;1. SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94309, USA;2. IPNO, CNRS-IN2P3, Univ. Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France;3. iTHES Research Group, RIKEN, Wako, Saitama 351-0198, Japan;1. KEK Theory Center, Institute of Particle and Nuclear Studies, High Energy Accelerator Research Organization (KEK), Oho 1-1, Tsukuba, Ibaraki, 305-0801, Japan;2. J-PARC Branch, KEK Theory Center, Institute of Particle and Nuclear Studies, KEK, and Theory Group, Particle and Nuclear Physics Division, J-PARC Center, Shirakata 203-1, Tokai, Ibaraki, 319-1106, Japan;3. School of Physics and Microelectronics, Zhengzhou University, Zhengzhou, Henan 450001, China;4. CPHT, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, Route de Saclay, 91128 Palaiseau, France;1. Department of Physics and Astronomy, Texas A&M University-Commerce, TX 75429-3011, USA;2. Department of Physics, Yuncheng University, Yuncheng 044000, China;1. KEK Theory Center, Institute of Particle and Nuclear Studies (IPNS), High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki, 305-0801, Japan;2. J-PARC Branch, KEK Theory Center, IPNS, KEK, 203-1, Shirakata, Tokai, Ibaraki, 319-1106, Japan;3. Nihon University, College of Bioresource Sciences, Fujisawa 252-0880, Japan;4. General Education, Faculty of Engineering, Osaka Institute of Technology, Osaka 535-8585, Japan |
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| Abstract: | Single-particle energies of Λ and Σ hyperons in several nuclei are obtained from the relevant self-energies. The latter are constructed within the framework of a perturbative many-body approach employing present realistic hyperon-nucleon interactions such as the models of the Jülich and Nijmegen groups. The effects of the non-locality and energy dependence of the self-energy on the bound states are investigated. It is also shown that, although the single-particle hyperon energies are well reproduced by local Woods-Saxon hyperon-nucleus potentials, the wave functions from the non-local self-energy are far more extended. Implications of this behavior for the mesonic weak decay of Λ hypernuclei are discussed. |
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