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Using K0?? ? ?? transitions to compute K ?(? ?)I=0 decay amplitudes at NLO in the chiral expansion

Using K0?? ? ?? transitions to compute K ?(? ?)I=0 decay amplitudes at NLO in the chiral expansion
Using K0?? ? ?? transitions to compute K ?(? ?)I=0 decay amplitudes at NLO in the chiral expansion
It is proposed to compute matrix elements for the (unphysical) K0?? ? ?? transition to determine
the next-to-leading order low energy constants of the weak chiral Lagrangian. This allows
us to evaluate K ?(? ?)I=0 decay amplitudes at this level of precision. This approach has several
significant advantages over the use of K ?? transitions, most notably the elimination of
s-channel disconnected diagrams and the use of fewer inversions.
1-7
Changhoan, Kim
948450f4-b409-4346-8201-93358bf34dd0
Sachrajda, Christopher
0ed6568b-f52f-4314-8677-4aeeb925d6f7
Changhoan, Kim
948450f4-b409-4346-8201-93358bf34dd0
Sachrajda, Christopher
0ed6568b-f52f-4314-8677-4aeeb925d6f7

Changhoan, Kim and Sachrajda, Christopher (2007) Using K0?? ? ?? transitions to compute K ?(? ?)I=0 decay amplitudes at NLO in the chiral expansion. Proceedings of Science, 1-7.

Record type: Article

Abstract

It is proposed to compute matrix elements for the (unphysical) K0?? ? ?? transition to determine
the next-to-leading order low energy constants of the weak chiral Lagrangian. This allows
us to evaluate K ?(? ?)I=0 decay amplitudes at this level of precision. This approach has several
significant advantages over the use of K ?? transitions, most notably the elimination of
s-channel disconnected diagrams and the use of fewer inversions.

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More information

Published date: 2007
Additional Information: arXiv:0710.2519v1

Identifiers

Local EPrints ID: 64263
URI: https://eprints.soton.ac.uk/id/eprint/64263
PURE UUID: c7716ee8-911f-43a8-8d1c-1fadf60ea63a

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Date deposited: 15 Jan 2009
Last modified: 13 Mar 2019 20:22

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