CP violation and pi pi interaction in the radiative decays of $K_L$ and $K_S$ - INSPIRE

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CP violation and pi pi interaction in the radiative decays of $K_L$ and $K_S$

S.S. Bulanov
(
- Moscow, ITEP
)

May, 2002

6 pages

Part of Proceedings, 37th Rencontres de Moriond on Electroweak Interactions and Unified Theories : Les Arcs, France, March 9-16, 2002, 111-116

Contribution to:

37th Rencontres de Moriond on Electroweak Interactions and Unified Theories, 111-116

e-Print:

hep-ph/0205164 [hep-ph]

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Abstract:

The phases of terms of amplitude that arise from the

\pi\pi

interaction are obtained by using a simple realistic model of

\pi\pi

interaction via virtual

\rho

-meson, instead of the ChPT. It is shown that the standard ChPT approach cannot reproduce the contribution of the

\rho

-meson to the

\pi\pi

interaction. It is shown that the interference between the terms of amplitude with different CP-parity appears only when the photon is polarized (linearly or circularly). Instead of measuring the linear polarization, the angular correlation between the

\pi^{+}\pi^{-}

and

e^{+}e^{-}

planes in

K_{S,L}\to\pi^{+}\pi^{-}e^{+}e^{-}

decay can be studied.

talk: Les Arcs 2002/03/09
K0(L): radiative decay
K0(S): radiative decay
K0: semileptonic decay
CP: violation
Feynman graph: higher-order
pi+ pi-: final-state interaction
rho(770)0
effective Lagrangian
perturbation theory: chiral

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Figures(0)

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