A joint analysis of the S-wave in the pi+pi- and pi0pi0 data

Abstract

We use our former results on pi+pi- S-wave obtained in a nearly assumption-free way from the 17.2 GeV/c data to predict the pi0pi0 S--wave. The predictions are compared with the recent results of the E852 experiment at 18.3 GeV/c. A good agreement is found for only one (the "down-flat") solution while the second one (the "up-flat") is excluded by the pi0pi0 data. Thus the long-standing "up-down" ambiguity has been finally resolved in favour of the S-wave intensity which stays large and nearly constant up to the KK-bar threshold. A joint analysis of both sets of data leads to a reduction of errors for this solution.

revised handling of errors, 26 pages, 9 figures

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• Effects of Quenching and Partial Quenching on Penguin Matrix Elements
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Cited by in corpus (12)

• Kaon Decays in the Standard Model
• Kaon Matrix Elements and CP-violation from Quenched Lattice QCD: (I) the 3-flavor case
• Direct CP violation in $K^0\to \pi \pi$: Standard Model Status
• Improved Determination of the Electroweak Penguin Contribution to epsilon'/epsilon in the Chiral Limit
• Neutrinoless double beta decay and chiral $SU(3)$
• Remarks on the hadronic matrix elements relevant to the SUSY K-Kbar mixing amplitude
• On lattice extraction of K --> pi pi amplitudes to O(p^4) in Chiral Perturbation Theory
• Lattice extraction of $K\to \pi \pi$ amplitudes to NLO in partially quenched and in full chiral perturbation theory
• Matching the Electroweak Penquins Q_7 and Q_8
• K to pi and K to 0 in 2+1 Flavor Partially Quenched Chiral Perturbation Theory
• K -> pi pi Electroweak Penguins in the Chiral Limit
• Chiral Logarithms in $\Delta S=1$ Kaon Decay Amplitudes in General Effective Flavor Theories