High Resolution Spectroscopy of {sub {lambda}}{sup 12}B by Electroproduction

Journal Article · Fri Aug 03 00:00:00 EDT 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.99.052501· OSTI ID:20957921

Iodice, M ^[1]; Cusanno, F; Urciuoli, G M ^[2]; Acha, A; Ambrozewicz, P; Coman, L; Markowitz, P; Moteabbed, M; Raue, B; Reinhold, J ^[3]; Aniol, K A; Margaziotis, D J ^[4]; Baturin, P; Jiang, X; McCormick, K ^[5]; Bertin, P Y; Camsonne, A; Ferdi, C ^[6]; Benaoum, H ^[7]; Blomqvist, K I ^[8]

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1. Istituto Nazionale di Fisica Nucleare, Sezione di Roma Tre, I-00146 Rome (Italy)
2. Istituto Nazionale di Fisica Nucleare, Sezione di Roma1, Piazza Aldo Moro, Rome (Italy)
3. Florida International University, Miami, Florida 33199 (United States)
4. California State University, Los Angeles, Los Angeles, California 90032 (United States)
5. Rutgers, State University of New Jersey, Piscataway, New Jersey 08855 (United States)
6. Universite Blaise Pascal/IN2P3, F-63177 Aubiere (France)
7. Syracuse University, Syracuse, New York 13244 (United States)
8. Universitaet Mainz, Mainz (Germany)

An experiment measuring electroproduction of hypernuclei has been performed in hall A at Jefferson Lab on a {sup 12}C 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 {sub {lambda}}{sup 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.

• OSTI ID: 20957921
• Journal Information: Physical Review Letters, Vol. 99, Issue 5; Other Information: DOI: 10.1103/PhysRevLett.99.052501; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BORON 12
CARBON 12 TARGET
CEBAF ACCELERATOR
CHERENKOV COUNTERS
COUNTING RATES
ELECTROPRODUCTION
ENERGY RESOLUTION
GROUND STATES
HYPERNUCLEI
KAONS
KEV RANGE 100-1000
MEV RANGE 10-100
P WAVES
PARTICLE IDENTIFICATION
S WAVES
SEPTUM MAGNETS
SPECTROSCOPY