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ID 14575
file
creator
CP-PACS, Collaboration
Tsutsui, N
Aoki, S
Fukugita, M
Hashimoto, S
Ishizuka, N
Iwasaki, Y
Kanaya, K
Kaneko, T
Kuramashi, Y
Onogi, T
Taniguchi, Y
Ukawa, A
Yoshié, T
NDC
Physics
abstract
We present a quenched lattice QCD calculation of the alpha and beta parameters of the proton decay matrix element. The simulation is carried out using the Wilson quark action at three values of the lattice spacing in the range a[approximate]0.1-0.064 fm to study the scaling violation effect. We find only mild scaling violation when the lattice scale is determined by the nucleon mass. We obtain in the continuum limit, |alpha(NDR,2 GeV)|=0.0090(09)(+5-19) GeV3 and |beta(NDR,2 GeV)|=0.0096(09)(+6-20) GeV3 with alpha and beta in a relatively opposite sign, where the first error is statistical and the second is due to the uncertainty in the determination of the physical scale.
journal title
Physical Review D
volume
Volume 70
start page
111501
date of issued
2004
publisher
The American Physical Society
issn
1550-7998
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
Copyright (c) 2004 The American Physical Society
relation is version of URL
http://dx.doi.org/10.1103/PhysRevD.70.111501
department
Graduate School of Science