Phys. Rev. C
68,
064004
(2003)
[13 pages]
Experimental study of the 12C(Kstopped−,π0)Λ12B reaction
M. W. Ahmed et al.
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M. W. Ahmed*, X. Cui, A. Empl, E. V. Hungerford, K. J. Lan, and M. Youn†
University of Houston, Department of Physics, 4800 Calhoun, Houston, Texas 77204-5506, USA
R. E. Chrien, R. Gill, P. Pile, A. Rusek, and R. Sutter
Brookhaven National Laboratory, Department of Physics, Upton, New York 11973, USA
J. Bjoraker, D. Dehnhard, J. M. O’Donnell‡, J. Gerald, H. Juengst, and J. H. Liu
University of Minnesota, School of Physics & Astronomy, 116 Church Street SE, Minneapolis, Minnesota 55455, USA
J. C. Peng§, C. L. Morris, C. M. Riedel**, and H. A. Thiessen
Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
D. Androic, I. Bertovic, M. Furic, T. Petkovic, and M. Planinic
University of Zagreb, Department of Physics, Bijenicka 32 HR-10000 Zagreb, Croatia
L. Tang
Hampton University, 12000 Jefferson Avenue, Newport News, Virginia 23606, USA
V. Zeps
University of Kentucky, Department of Physics, Lexington, Kentucky 40506, USA
Received 22 November 2002; published 31 December 2003
The (Kstopped−,π0) strangeness and charge changing reaction was investigated by producing a Λ12B hypernucleus from a carbon target. The branching ratio for K− capture to the ground and p-shell states of this hypernucleus was found to be (0.28±0.08)×10−3 and (0.35±0.09)×10−3, respectively, which after correction for isospin was lower than a previously measured value for the 12C(Kstopped−,π−)Λ12C reaction, but still above the theoretical predictions for the ground state. The experiment obtained a missing-mass resolution comparable to in-flight reactions, however the higher background and lower selectivity of the Kstopped− reaction limits its usefulness in the study of new hypernuclear species.
© 2003 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevC.68.064004
DOI:
10.1103/PhysRevC.68.064004
PACS:
21.80.+a, 21.10.Dr, 21.60.Cs
*Corresponding author. Present address: Triangle Universities Nuclear Laboratory, Duke University, Durham, NC 27708. Email address: mohammad.ahmed@duke.edu †Present Address: Inst. of Physics and Applied Physics, Yonsei University, Seoul 120-749, Korea. ‡Present Address: LANSCE-3, MS H855, Los Alamos, NM 87545. §Present Address: Department of Physics, University of Illinois at Urbana-Champaign, Urbana, IL 61801. **Present address: Montana State University, Dept. of Physics, Bozeman, MT 59717.
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