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18 April 2024

» pubmed » pmid15601150

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Hypernuclear fine structure in (16)(Lambda)O and the LambdaN tensor interaction
M Ukai ; S Ajimura ; H Akikawa ; D E Alburger ; A Banu ; R E Chrien ; G B Franklin ; J Franz ; O Hashimoto ; T Hayakawa ; H Hotchi ; K Imai ; T Kishimoto ; M May ; D J Millener ; S Minami ; Y Miura ; T Miyoshi ; K Mizunuma ; T Nagae ; S N Nakamura ; K Nakazawa ; Y Okayasu ; P Pile ; B P Quinn ; A Rusek ; Y Sato ; R Sutter ; H Takahashi ; L Tang ; H Tamura ; K Tanida ; L Yuan ; S H Zhou ; ;
Date:	3 Dec 2004
Journal:	Phys Rev Lett, 93 (23), 232501
Abstract:	We have observed two gamma-ray transitions in (16)(Lambda)O from the 6.6 MeV excited 1(-)(2) state to both ground-state spin-doublet members (1(-)(1),0(-)) by the (K-,pi(-)gamma) reaction. We have obtained the ground-state doublet spacing to be 26.4+/-1.6(stat)+/-0.5(syst) keV and the excitation energy of the 1(-)(2) state to be 6561.7+/-1.1(stat)+/-1.7(syst) keV. The ground-state doublet spacing provides a small but nonzero strength of the tensor interaction between a Lambda and a nucleon. This is the first experimental result on the LambdaN tensor interaction.
Source:	PubMed, pmid15601150
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