Abstract
A search for the possible decay of the antiproton has been carried out in a hydrogen bubble chamber exposed to a 0.76 GeV/c antiproton beam. As a result 161 odd-prong events with a net charge of −1 in the final state were observed. After subtracting the two types of background discussed in the paper we are left with a signal of 5 ± 16 events. From this a lower limit of 1.2 X 10−4s has been obtained for the antiproton lifetime with 95% confidence level.
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