An experimental lower limit on the antiproton lifetime

Ganguli, S.N. ; Malhotra, P. K. ; Raghavan, R. ; Subramanian, A. ; Sudhakar, K. (1978) An experimental lower limit on the antiproton lifetime Physics Letters B, 74 (1-2). pp. 130-133. ISSN 0550-3213

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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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