S matrix approach to two pion production in e+ e- annihilation and tau decay
(1996) Physical Review D, Particles, Fields, Gravitation and Cosmology — Vol. 53, p. 4089-4091 (1996)
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- (en) Based on the S-matrix approach, we introduce a modified formula for the $\pi^{\pm}$ electromagnetic form factor which describes very well the experimental data in the energy region $2m_{\pi} \leq \sqrt{s} \leq 1.1$ GeV. Using the CVC hypothesis we predict $B(\tpp) = (24.75 \pm 0.38)\% $, in excellent agreement with recent experiments. Comment: Latex, 10 pages, submitted to Phys. Rev. D
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Bernicha, A., Lopez Castro, G., & Pestieau, J. (1996). S matrix approach to two pion production in e+ e- annihilation and tau decay. Physical Review D, Particles, Fields, Gravitation and Cosmology, 53, 4089-4091. https://doi.org/10.1103/PhysRevD.53.4089 (Original work published 1996)