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arXiv · hep-ph/0310057

Proposal to observe the strong Van der Waals force in e+\bar{e} -> 2 π

Tetsuo Sawada
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Abstract

Large discrepancy of the p-wave phase shift data $δ_{1}(ν)$ of the $π$-$π$ scattering from those of the dispersion calculation is pointed out. In order to determine which is correct, the pion form factor $F_π(ν)$, which is the second source of information of the phase shift $δ_{1}(ν)$, is used. It is found that the phase shift obtained from the dispersion is not compatible with the data of the pion form factor. What is wrong with the dispersion calculation, is considered.

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Tetsuo Sawada. 2003-10-04. Proposal to observe the strong Van der Waals force in e+\bar{e} -> 2 π. https://doi.org/10.1063/1.1799705

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