Role of Scalar Meson Resonances in $K_{L}^{0} \rightarrow π^{0} γγDecay

Abstract

Corrections to $K_L^0\to {\pi }^0\gamma \gamma$ decay induced by scalar meson exchange are studied within chiral perturbation theory. In spite of bad knowledge of scalar-mesons parameters, the calculated branching ratio can be changed by a few percent.

18 pages of text, 2 figures (available upon request); preprint IJS-TP-16-94 , TUM-T31-63-94#

References in corpus (4)

• Scalar Mesons in $\varphi$ Radiative Decay: their implications for spectroscopy and for studies of CP-violation at $\varphi$ factories
• Direct CP Violation in K_L --> π^0 e^+e^- Beyond Leading Logarithms
• K_S\rightarrow γγ, K_L\rightarrowπ^0γγ$ and Unitarity
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Cited by in corpus (3)

• Vector-meson contributions do not explain the rate and spectrum in K_L -> pi0 gamma gamma
• Radiative decays with light scalar mesons and singlet-octet mixing in ChPT
• K_L -> pi0 gamma gamma and the bound on the CP-conserving K_L -> pi0 e+e-