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Title: High Resolution Spectroscopy of 12B_Lambda by Electroproduction

Journal Article · · Phys. Rev. Lett.

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.

Research Organization:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Organization:
USDOE - Office of Energy Research (ER)
DOE Contract Number:
AC05-84ER40150
OSTI ID:
912692
Report Number(s):
JLAB-PHY-07-646; DOE/ER/40150-4297; 0705.3332v1 [nucl-ex]; PRLTAO; TRN: US0800487
Journal Information:
Phys. Rev. Lett., Vol. 99; ISSN 0031-9007
Country of Publication:
United States
Language:
English

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