Analytic estimates of quenched penguins

Details Analytic estimates of quenched penguins Analytic estimates of quenched penguins

2003-09-16

arxiv.org/abs/hep-lat/0309101v1

Nucl.Phys.Proc.Suppl.129:311-313,2004

Physics

High Energy Physics

High Energy Physics - Lattice

3 pages, contribution to Lattice2003(matrix)

Scientific paper

10.1016/S0920-5632(03)02566-0

When we embed the strong penguin operator Q_6 in the quenched theory, it does not remain a singlet under right-handed chiral transformations. As a consequence, more low-energy constants associated with this operator appear than in the unquenched theory. We give analytic estimates of the leading constants. The results suggest that the effects of quenching on this operator are large.

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