Pion pion phase shift and form-factors in the decays k+- ---> pi+ pi- e+- nu(e)
1973
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Abstract: (APS)
We present the results of an analysis of 8141 Ke4 decays. These include (i) the form factors of the weak hadronic current and their dependences on the invariant di-lepton and di-pion masses, and (ii) the magnitude and dependence on invariant di-pion mass of the π−π scattering phase shift δs−δp.- k+: decay
- decay: k+
- final state
- k-: decay
- decay: k-
- pi pi: interaction
- interaction: pi pi
- partial wave
- hadron: weak interaction
- weak interaction: hadron
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