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arXiv · 0708.1576

Study of K^0 \to pi^- e^+ nu_e e^+ e^- in chiral perturbation theory

K. Tsuji·T. Sato
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Abstract

K^0 \to pi^- e^+ nu_e e^+ e^- decay is studied up to the next-to-leading order O^4 in chiral perturbation theory. It is found that the O^4 terms appreciably modifiy the shape of the invariant mass distribution of the leptons and the energy spectrum of the neutrino.

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K. Tsuji, T. Sato. 2008-03-15. Study of K^0 \to pi^- e^+ nu_e e^+ e^- in chiral perturbation theory. https://doi.org/10.1103/physrevd.77.054022

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