Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2007-05-23
Phys.Rev.Lett.99:052501,2007
Physics
Nuclear Physics
Nuclear Experiment
Paper submitted to Physical Review Letters
Scientific paper
10.1103/PhysRevLett.99.052501
An experiment measuring electroproduction of hypernuclei has been performed in Hall A at Jefferson Lab on a $^{12}$C target. In order to increase counting rates and provide unambiguous kaon identification two superconducting septum magnets and a Ring Imaging CHerenkov detector (RICH) were added to the Hall A standard equipment. An unprecedented energy resolution of less than 700 keV FWHM has been achieved. Thus, the observed \lam{12}{B} spectrum shows for the first time identifiable strength in the core-excited region between the ground-state {\it s}-wave $\Lambda$ peak and the 11 MeV {\it p}-wave $\Lambda$ peak.
Acha A.
Ambrozewicz Pawel
Aniol K. A.
Baturin P.
Benaoum H.
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