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High resolution spectroscopy of (lambda)(12)B by electroproduction |
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| Authors: | Iodice M Cusanno F Acha A Ambrozewicz P Aniol K A Baturin P Bertin P Y Benaoum H Blomqvist K I Boeglin W U Breuer H Brindza P Bydzovský P Camsonne A Chang C C Chen J-P Choi Seonho Chudakov E A Cisbani E Colilli S Coman L Craver B J De Cataldo G de Jager C W De Leo R Deur A P Ferdi C Feuerbach R J Folts E Fratoni R Frullani S Garibaldi F Gayou O Giulani F Gomez J Gricia M Hansen J O Hayes D Higinbotham D W Holmstrom T K Hyde C E Ibrahim H F Jiang X Kaufman L J Kino K Kross B Lagamba L LeRose J J Lindgren R A Lucentini M Margaziotis D J Markowitz P Marrone S Meziani Z E McCormick K Michaels R W |
| Institution: | Istituto Nazionale di Fisica Nucleare, Sezione di Roma Tre, I-00146 Roma, Italy. |
| Abstract: | An experiment measuring electroproduction of hypernuclei has been performed in hall A at Jefferson Lab on a 12C target. In order to increase counting rates and provide unambiguous kaon identification two superconducting septum magnets and a ring imaging Cherenkov detector were added to the hall A standard equipment. An unprecedented energy resolution of less than 700 keV FWHM has been achieved. Thus, the observed (Lambda)(12)B spectrum shows for the first time identifiable strength in the core-excited region between the ground-state s-wave Lambda peak and the 11 MeV p-wave Lambda peak. |
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