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Determination of the relative branching ratios for p anti-p ---> pi+ pi- and p anti-p ---> K+ K-
Authors: CPLEAR Collaboration (including E. van Beveren)
Ref.: Physics Letters B 267, 154-158 (1991)
Abstract: The ratio of the branching fractions for proton antiproton --> K+ K− and proton antiproton --> K+ K− was determined with the CPLEAR detector, by stopping antiprotons in a gaseous hydrogen target at 15 bar pressure. It was found to be BR(K+K−)/BR(π+π−)=0.205± 0.016. The fraction of P-wave annihilation at rest at this target density was deduced to be (38±9)%.
