High resolution spectroscopic study of 10Be-Λ

Gogami, T. and Androić, Darko and Furić, Miroslav and Petković, Tomislav and Zhu, L. (HKS(JLab E05-115) Collaboration) (2016) High resolution spectroscopic study of 10Be-Λ. Physical Review C, 93 (3). pp. 34314-7. ISSN 2469-9985

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Spectroscopy of a 10Be-Λ hypernucleus was carried out at JLab Hall C using the (e, e′K+) reaction. A new magnetic spectrometer system (SPL+HES+HKS), specifically designed for high resolution hypernuclear spectroscopy, was used to obtain an energy spectrum with a resolution of ∼0.78 MeV (FWHM). The well-calibrated spectrometer system of the present experiment using p(e, e′K+)Λ, Σ0 reactions allowed us to determine the energy levels ; and the binding energy of the ground-state peak (mixture of 1− and 2− states) was found to be B- Λ=8.55±0.07(stat.)±0.11(sys.) MeV. The result indicates that the ground-state energy is shallower than that of an emulsion study by about 0.5 MeV which provides valuable experimental information on the charge symmetry breaking effect in the ΛN interaction.

Item Type: Article
Keywords: 10Be-Lambda hypernucleus, (e, e'K+) reaction, magnetic spectrometers SPL+HES+HKS, ground state, binding energy, high resolution spectroscopy, charge symmetry breaking
Date: 10 March 2016
Subjects: NATURAL SCIENCES > Physics
Additional Information: ©2016 American Physical Society. Received 16 November 2015; revised manuscript received 7 January 2016; published 10 March 2016.
Divisions: Faculty of Science > Department of Physics
Project code: 0036056
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 21 Apr 2016 16:03
Last Modified: 29 Nov 2017 17:01
URI: http://digre.pmf.unizg.hr/id/eprint/4786

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