High Resolution Spectroscopy of 12B_Lambda by Electroproduction

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 t...

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Bibliographic Details
Published in:	Physical review letters Vol. 99
Main Authors:	M. Iodice, F. Cusanno, A. Acha, P. Ambrozewicz, K.A. Aniol, P. Baturin, P.Y. Bertin, H. Benaoum, K.I. Blomqvist, W.U. Boeglin, H. Breuer, P. Brindza, P. Bydˇzovsk´y, A. Camsonne, C.C. Chang, J.-P. Chen, Seonho Choi, E.A. Chudakov, E. Cisbani, S. Colilli, L. Coman, B.J. Craver, G. De Cataldo, C.W. de Jager, R. De Leo, A.P. Deur, C. Ferdi, R.J. Feuerbach, E. Folts, R. Fratoni, S. Frullani, F. Garibaldi, O. Gayou, F. Giulani, J. Gomez, M. Gricia, J.O. Hansen, D. Hayes, D.W. Higinbotham, T.K. Holmstrom, C.E. Hyde, H.F. Ibrahim, X. Jiang, L.J. Kaufman, K. Kino, B. Kross, L. Lagamba, J.J. LeRose, R.A. Lindgren, M. Lucentini, D.J. Margaziotis, P. Markowitz, S. Marrone, Z.E. Meziani, K. McCormick, R.W. Michaels, D.J. Millener, T. Miyoshi, B. Moffit, P.A. Monaghan, M. Moteabbed, C. Munoz Camacho, S. Nanda, E. Nappi, V.V. Nelyubin, B.E. Norum, Y. Okasyasu, K.D. Paschke, C.F. Perdrisat, E. Piasetzky, V.A. Punjabi, Y. Qiang, B. Raue, P.E. Reimer, J. Reinhold, B. Reitz, R.E. Roche, V.M. Rodriguez, A. Saha, F. Santavenere, A.J. Sarty, J. Segal, A. Shahinyan, J. Singh, S. ˇ Sirca, R. Snyder, P.H. Solvignon, M. Sotona, R. Subedi, V.A. Sulkosky, T. Suzuki, H. Ueno, P.E. Ulmer, G.M. Urciuoli, P. Veneroni, E. Voutier, B.B. Wojtsekhowski, X. Zheng, and C. Zorn
Format:	Journal Article
Language:	English
Published:	United States 01-07-2007
Subjects:	CHERENKOV COUNTERS COUNTING RATES ELECTROPRODUCTION ENERGY RESOLUTION HYPERNUCLEI KAONS PHYSICS OF ELEMENTARY PARTICLES AND FIELDS RESOLUTION SEPTUM MAGNETS SPECTROSCOPY
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Summary:	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.
Bibliography:	JLAB-PHY-07-646; DOE/ER/40150-4297; 0705.3332v1 [nucl-ex] USDOE - Office of Energy Research (ER) AC05-84ER40150
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.99.052501