Calculation of K → ππ decay amplitudes from K → π matrix elements in quenched domain-wall QCD

Nuclear Physics B - Proceedings Supplements Volume 106-107 Page 332-334 published_at 2002-03

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Title ( eng )	Calculation of K → ππ decay amplitudes from K → π matrix elements in quenched domain-wall QCD
Creator	CP-PACS Collaboration Aoki S. Aoki Y. Burkhalter R. Ejiri S. Fukugita M. Hashimoto S. Ishizuka N. Iwasaki Y. Izubuchi T. Kanaya K. Kaneko T. Kuramashi Y. Lesk V. Nagai K.-I. Noaki J. Okawa Masanori Taniguchi Y. Ukawa A. Yoshie T.
Source Title	Nuclear Physics B - Proceedings Supplements
Volume	106-107
Start Page	332
End Page	334
Abstract	We present a calculation of the K → ππ decay amplitudes from the K → π matrix elements using leading order relations derived in chiral perturbation theory. Numerical simulations are carried out in quenched QCD with the domain-wall fermion action and the renormalization group improved gluon action. Our results show that the I = 2 amplitude is reasonably consistent with experiment whereas the I = 0 amplitude is sizably smaller. Consequently the ΔI = 1/2 enhancement is only half of the experimental value, and ε′/ε is negative.
Keywords	QCD
NDC	Physics [ 420 ]
Language	eng
Resource Type	journal article
Publisher	Elsevier Science B.V.
Date of Issued	2002-03
Rights	Copyright (c) 2002 Elsevier Science B.V.
Publish Type	Author’s Original
Access Rights	open access
Source Identifier	[ISSN] 0920-5632 [DOI] 10.1016/S0920-5632(01)01705-4 [DOI] http://dx.doi.org/10.1016/S0920-5632(01)01705-4 isVersionOf