High Resolution Spectroscopy of BΛ12 by Electroproduction

M. Iodice et al. (Jefferson Lab Hall A Collaboration)
Phys. Rev. Lett. 99, 052501 – Published 1 August 2007

Abstract

An experiment measuring electroproduction of hypernuclei has been performed in hall A at Jefferson Lab on a C12 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 BΛ12 spectrum shows for the first time identifiable strength in the core-excited region between the ground-state s-wave Λ peak and the 11 MeV p-wave Λ peak.

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  • Received 23 May 2007

DOI:https://doi.org/10.1103/PhysRevLett.99.052501

©2007 American Physical Society

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Vol. 99, Iss. 5 — 3 August 2007

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