2021-09-24T02:01:04Zhttps://tsukuba.repo.nii.ac.jp/oaioai:tsukuba.repo.nii.ac.jp:000174472021-03-01T21:03:16ZViability of perturbative renormalization factors in lattice QCD calculation of the K0-K¯0 mixing matrix石塚, 成人宇川, 彰Ishizuka, N.Fukugita, M.Mino, H.Okawa, M.Shizawa, Y.Ukawa, A.application/pdfValidity 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).journal articleAmerican Physical Society1993-07application/pdfPhysical review letters1712426http://hdl.handle.net/2241/1017090031-9007AA00773679https://tsukuba.repo.nii.ac.jp/record/17447/files/PRL_71-1.pdfeng10.1103/PhysRevLett.71.24©1993 The American Physical Society