Summary
A narrow peak is seen at about 1170 MeV/c2 in three-pion systems selected by restrictions on longitudinal momentum and four-momentum transfers in the reaction pp→pp→π+π-π0 at 19 GeV/c,i.e. in the region of the oldA 1.5(1170).
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Danielsen, K.M., Jacobsen, T. Note on a narrow peak at 1170 MeV/c2 in neutral three-pion systems produced in the reaction pp→pp→π+π-π0 at 19 GeV/cat 19 GeV/c. Nuov Cim A 105, 879–882 (1992). https://doi.org/10.1007/BF02799103
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DOI: https://doi.org/10.1007/BF02799103