Journal
EUROPEAN PHYSICAL JOURNAL C
Volume 72, Issue 5, Pages -Publisher
SPRINGER
DOI: 10.1140/epjc/s10052-012-2014-1
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Funding
- DFG [SFB/TR 16]
- EU [227431, 283286]
- Bonn-Cologne Graduate School of Physics and Astronomy
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We study the three-pion decays of the lightest isoscalar vector mesons, omega and phi, in a dispersive framework that allows for a consistent description of final-state interactions between all three pions. Our results are solely dependent on the phenomenological input for the pion-pion P-wave scattering phase shift. We predict the Dalitz plot distributions for both decays and compare our findings to recent measurements of the phi -> 3 pi Dalitz plot by the KLOE and CMD-2 collaborations. Dalitz plot parameters for future precision measurements of omega -> 3 pi are predicted. We also calculate the pi pi P-wave inelasticity contribution from omega pi intermediate states.
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