The pbar He-4 anmhllatlon cross section averaged over the interval 40-50 MeV/c has been measured using a streamer chamber in a magnetic field The measured value is 1342 +- 250 mb . It agrees with a behavmur like 1/p of the annihilation cross section. Our result has been obtained at the lowest momentum achieved till now in measurements of antlproton anmhllatlon in flight.
Antiproton Helium Annihilation Around 45 Mev/c
BALESTRA, Ferruccio;BUSSA, Maria Pia;BUSSO, Luigi;FERRERO, Livio;PANZIERI, Daniele;PIRAGINO, Guido;
1989-01-01
Abstract
The pbar He-4 anmhllatlon cross section averaged over the interval 40-50 MeV/c has been measured using a streamer chamber in a magnetic field The measured value is 1342 +- 250 mb . It agrees with a behavmur like 1/p of the annihilation cross section. Our result has been obtained at the lowest momentum achieved till now in measurements of antlproton anmhllatlon in flight.
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