LATTICE QCD CALCULATION OF THE KAON-B PARAMETER WITH THE WILSON QUARKACTION

Authors
AOKI S FUKUGITA M HASHIMOTO S ISHIZUKA N IWASAKI Y KANAYA K KURAMASHI Y OKAWA M UKAWA A YOSHIE T
Citation
S. Aoki et al., LATTICE QCD CALCULATION OF THE KAON-B PARAMETER WITH THE WILSON QUARKACTION, Physical review letters, 81(9), 1998, pp. 1778-1781
Citations number
14
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
81
Issue
9
Year of publication
1998
Pages
1778 - 1781
Database
ISI
SICI code
0031-9007(1998)81:9<1778:LQCOTK>2.0.ZU;2-Y
Abstract
The kaon B parameter is calculated in quenched lattice QCD with the Wi lson quark action. The mixing problem of the Delta s = 2 four-quark op erators is solved nonperturbatively with full use of chiral Ward ident ities, and this method enables us to construct the weak four-quark ope rators exhibiting good chiral behavior. We find B-K(NDR,2 GeV) = 0.69( 7) (where NDR denotes naive dimensional regularization) at the lattice cutoff scale of a(-1) = 2.7-4.3 GeV.