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Physics  2003 

Penguin diagrams for the HYP staggered fermions

DOI: 10.1016/S0920-5632(03)02607-0

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We present results of the one-loop corrections originating from the penguin diagrams for the improved staggered fermion operators constructed using various fat links such as Fat7, Fat7+Lepage, $\bar{\rm Fat7}$, HYP (I) and HYP (II). The main results include the diagonal/off-diagonal mixing coefficients and the matching formula between the continuum and lattice operators.


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