Naslov
High resolution spectroscopic study of 10Be-Λ

Autori
Gogami, T. ; ... ; Androić, Darko ; ... ; Furić, Miroslav ; ... ; Petković, Tomislav ; ... ; Ševa, Tomislav ; ... ; Zhu, L.

Kolaboracija
HKS(JLab E05-115) Collaboration

Izvornik
Physical review. C (2469-9985) 93 (2016), 3; 034314, 7

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
10Be-Lambda hypernucleus ; (e ; e'K+) reaction ; magnetic spectrometers SPL+HES+HKS ; ground state ; binding energy ; high resolution spectroscopy ; charge symmetry breaking

Sažetak
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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Elektrotehnika, Računarstvo

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