Evidence for narrow Δ0(1232) states in the 12 C(e,e'pπ−}11 C Reaction
Bartsch, P. ; Baumann, D. ; Bermuth, J. ; Bohinc, K. ; Böhm, R. ; Bosnar, D. ; Clawiter, N. ; Derber, S. ; Ding, M. ; Distler, M.O. ; Ebbes, A. ; Ewald, I. ; Friedrich, J.M. ; Friedrich, J. ; Jennewein, P. ; Kahrau, M. ; Kohl, M. ; Kozlov, A. ; Krygier, K.W. ; Kuss, M. ; Liesenfeld, A. ; Merkel, H. ; Merle, P. ; Müller, U. ; Neuhausen, R.
Springer
Published 1999
Springer
Published 1999
| ISSN: |
1434-601X
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| Keywords: |
PACS: 24.30.Gd Nuclear physics: Resonance reactions – 25.30.Rw Electroproduction reactions – 14.20.Gk Baryon resonances with S = 0 – 21.80.+a Hypernuclei
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| Source: |
Springer Online Journal Archives 1860-2000
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| Topics: |
Physics
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| Notes: |
Abstract: The reaction 12C(e,e'Δ0)11C →12C(e,e'pπ−)11C was investigated at the Mainz Microtron MAMI in a triple coincidence measurement using the three spectrometer setup of the A1 Collaboration. The good missing mass resolution of σm= 0.27 MeV/c2 allowed to select the events belonging to the ground state of 11C. Cutting on these events the excitation energy spectra of 12CΔ0 show evidence for two peaks of about 4 MeV width (FWHM) at 282 MeV and 296 MeV with a significance of about 4.5 standard deviations. The peaks are interpreted in a simple weak coupling model as bound Δ0 states in 12CΔ0.
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| Type of Medium: |
Electronic Resource
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| URL: |