Tensor coupling effects on spin symmetry in the anti-lambda spectrum of hypernuclei
Date
2011
Authors
Song C.-Y.
Yao J.-M.
Meng J.
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Abstract
Effects of Λω-tensor coupling on the spin symmetry of Λ spectra in Λ-nucleus systems are studied using relativistic mean-field theory. Taking 12C+Λ as an example, it is found that the tensor coupling enlarges the spin-orbit splittings of Λ by a factor of 5 but has a negligible effect on the wave functions of Λ. Similar conclusions are observed in other Λ-nuclei, including 16O+Λ, 40Ca+Λ and 208Pb+Λ. It is indicated that the spin symmetry in anti-lambda-nucleus systems is still a good approximation irrespective of the tensor coupling. © 2011 Chinese Physical Society and IOP Publishing Ltd.
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Citation
Chinese Physics Letters
28
9
http://www.scopus.com/inward/record.url?eid=2-s2.0-80053137811&partnerID=40&md5=1f20dad11f6a8071b2a04928cc5a7d18
28
9
http://www.scopus.com/inward/record.url?eid=2-s2.0-80053137811&partnerID=40&md5=1f20dad11f6a8071b2a04928cc5a7d18