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arXiv · 1006.4371

The role of P-wave inelasticity in J/psi to pi+pi-pi0

Peng Guo·Ryan Mitchell·Adam P. Szczepaniak
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Abstract

We discuss the importance of inelasticity in the P-wave pi pi amplitude on the Dalitz distribution of 3pi events in J/psi decay. The inelasticity, which becomes sizable for pi pi masses above 1.4 GeV, is attributed to KK to pi pi rescattering. We construct an analytical model for the two-channel scattering amplitude and use it to solve the dispersion relation for the isobar amplitudes that parametrize the J/psi decay. We present comparisons between theoretical predictions for the Dalitz distribution of 3pi events with available experimental data.

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Peng Guo, Ryan Mitchell, Adam P. Szczepaniak. 2010-06-22. The role of P-wave inelasticity in J/psi to pi+pi-pi0. https://doi.org/10.1103/physrevd.82.094002

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