A sharp structure at 1150 MeV/c2 in the invariant mass of the pi+-pi--pi+-pi- system is seen in the final state of antiproton-He-4 annihilation at 0.6 GeV/c incident momentum and of antiproton-He-3 annihilation at rest. These observations are confirmed by data on antiproton-He-4 annihilation at rest obtained in the Obelix (PS201) experiment. (See Ref. 1.)
Observation of Structures In the 4 Pion Invariant Mass In Antiproton-he-4 and Antiproton-he-3 Annihilation (streamer Chamber Data, Ps179 Experiment At Lear)
BALESTRA, Ferruccio;BUSSA, Maria Pia;BUSSO, Luigi;FERRERO, Livio;PANZIERI, Daniele;PIRAGINO, Guido;
1992-01-01
Abstract
A sharp structure at 1150 MeV/c2 in the invariant mass of the pi+-pi--pi+-pi- system is seen in the final state of antiproton-He-4 annihilation at 0.6 GeV/c incident momentum and of antiproton-He-3 annihilation at rest. These observations are confirmed by data on antiproton-He-4 annihilation at rest obtained in the Obelix (PS201) experiment. (See Ref. 1.)
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