Summary
Investigations of purely neutral final states in\(\bar pp\) annihilation are possible for the first time with the Crystal Barrel detector at LEAR. The high-mass resolution for π0-mesons allows the reconstruction of K 0S -mesons in their neutral-pion decay. Moreover, non-interacting K 0L -mesons can be well identified by the measurement of missing energy. Annihilation into the channel K 0L K 0S π0π0 proceeds predominantly via the following two-body intermediate states: K1(1400)K0, K1(1270)K0,\(K*\bar K*\),\(K*\bar K^0 \)which can be identified with the h′1 (1380)-meson.
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Crystal Barrel Collaboration., Amsler, C., Armstrong, D.S. et al. \(\bar pp\) Annihilation at rest into K 0L K 0S π0π0Annihilation at rest into K 0L K 0S π0π0 . Nuov Cim A 107, 2253–2259 (1994). https://doi.org/10.1007/BF02733991
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DOI: https://doi.org/10.1007/BF02733991