Abstract
All presently available data on the pionic double charge exchange reaction (π+, π−) on nuclei exhibit a very peculiar, resonance-like energy dependence near T π ≈ 50 MeV, while the angular distributions behave quite regularly. These features are in accordance with the signature of a narrow resonance in the πNN-subsystem having T(J P) = even (0−) and a mass of 2.065 GeV.
This work has been funded by the German Federal Minister for Research and Technology (BMFT) under the contract numbers 06 TÜ 656 and 06 KA 266, and by the DFG (Mu 705/3, Graduiertenkolleg).
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Bilger, R. et al. (1994). Signature of a Narrow πNN-Resonance in the Energy Dependence of the Pionic Double Charge Exchange. In: Bakker, B.L.G., van Dantzig, R. (eds) Few-Body Problems in Physics ’93. Few-Body Systems, vol 7. Springer, Vienna. https://doi.org/10.1007/978-3-7091-9352-5_24
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DOI: https://doi.org/10.1007/978-3-7091-9352-5_24
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