Zeros of the π+π? → π+π? amplitude |
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Authors: | DV Bugg |
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Institution: | Queen Mary College, Mile End Rd., London, U.K. |
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Abstract: | Recent data on the reaction show four conspicuous dips in the angular distribution at fixed values of ν = t?u. The conjecture is made that the channel π?π+ → π?π+ has zeros at the same ν values. Using data of the CERN-Munich group, one can follow the zeros through the whole Mandelstam plane. The zeros pass through the intersections of s and t channel poles, as the Veneziano model predicts; however, away from these intersections, they propagate in a fashion systematically quite different from Veneziano's ansatz. |
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