# Twopion decays of K mesons, K\_L-K\_S mass difference and the Dalitz decays of K\_L

Source: [Twopion decays of K mesons, K\_L-K\_S mass difference and the Dalitz decays of K\_L](<https://www.sota2.com/research/paper/68fa1f297a2b558e293278eb>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-23T17:21:45.772Z

Authors: K. Terasaki

Published: 1998-04-21T05:56:48.000Z

## Abstract

Two pion Decays of K mesons, K\_L-K\_S mass difference, two photon decay and the Dalitz decays of K\_L are studied systematically by assuming that their amplitude can be described in terms of a sum of short distance and long distance contributions. Dominance of the short distance effect on the K\_L-K\_S mass difference will be checked by the Dalitz decays of K\_L in a way consisten with the two pion decays of K mesons and the two photon decay of K\_L.

## Recorded benchmark results

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/hep-ph/9804342>)

[PDF](<https://arxiv.org/pdf/hep-ph/9804342.pdf>)