The quenched generating functional for hadronic weak interactions

Details The quenched generating functional for hadronic weak interactions The quenched generating functional for hadronic weak interactions

1998-10-05

arxiv.org/abs/hep-lat/9810012v1

Nucl.Phys.Proc.Suppl. 73 (1999) 318-320

Physics

High Energy Physics

High Energy Physics - Lattice

LATTICE98(matrixelement), 3 pages

Scientific paper

10.1016/S0920-5632(99)85060-9

The ultraviolet behaviour of the generating functional for hadronic weak interactions with $|\Delta S| =1, 2$ is investigated to one loop for a generic number of flavours and in the quenched approximation. New quenched chiral logarithms generated by the weak interactions can be accounted for via a redefinition of the weak mass term in the $\Delta S=\pm 1$ weak effective Lagrangian at leading order. Finally, we illustrate how chiral logarithms are modified by the quenched approximation in $K\to\pi\pi$ matrix elements with $\Delta I=1/2$ and 3/2.

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