Excess of Positive Mesons in Cosmic Rays


THE excess of positive mesons in cosmic rays at sea-level led to the original theory of the production of mesons by primary protons. It seems probable that precise measurements of the ratio of positive to negative mesons will help to decide between the several processes suggested in the literature.

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CARO, D., PARRY, J. & RATHGEBER, H. Excess of Positive Mesons in Cosmic Rays. Nature 165, 688–689 (1950) doi:10.1038/165688b0

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