Viability of perturbative renormalization factors in lattice QCD calculation of theK0-K¯0 | Zendy

N. Ishizuka | Zendy; M. Fukugita | Zendy; H. Mino | Zendy; M. Okawa | Zendy; Y. Shizawa | Zendy; A. Ukawa | Zendy

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Viability of perturbative renormalization factors in lattice QCD calculation of theK0-K¯0

Author(s) -

N. Ishizuka,

M. Fukugita,

H. Mino,

M. Okawa,

Y. Shizawa,

A. Ukawa

Publication year - 1993

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.71.24

Subject(s) - renormalization , quantum chromodynamics , physics , lattice qcd , lattice (music) , particle physics , lattice field theory , scaling , lattice gauge theory , perturbative qcd , mathematical physics , gauge theory , mathematics , geometry , acoustics

Validity of perturbative estimation of renormalization factors in weak matrix element calculations in lattice QCD is examined for the K0-K¯0 mixing matrix by comparing results for gauge invariant and noninvariant operators. A large disagreement found for uncorrected results for the two cases is shown to be removed by the one-loop renormalization factor. This indicates that the large scaling violation in the mixing matrix previously reported is not due to an artifact of prescription of lattice calculations. Our estimate of B^K for the continuum in quenched QCD is 0.61(13)–0.83(7)

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