A new measurement of the mean life of the positive pion Ashkin, J. ; Fazzini, T. ; Fidecaro, G. ; Goldschmidt-Clermont, Y. ; Lipman, N. H. ; Merrison, A. W. ; Paul, H. Abstract Publication: Il Nuovo Cimento Pub Date: May 1960 DOI: 10.1007/BF02731913 Bibcode: 1960NCim...16..490A