title: Neutral-kaon mixing from (2+1)-flavor domain-wall QCD.
abstract: We present the first results for neutral-kaon mixing using (2+1)-flavors of domain-wall fermions. A new approach is used to extrapolate to the physical up and down quark masses from our numerical studies with pion masses in the range 240-420 MeV; only SU(2)_{L}xSU(2)_{R} chiral symmetry is assumed and the kaon is not assumed to be light. Our main result is B_{K};{MS[over ]}(2 GeV)=0.524(10)(28) where the first error is statistical and the second incorporates estimates for all systematic errors.
authors.affiliation: SUPA, School of Physics, The University of Edinburgh, Edinburgh, United Kingdom.
authors.forename: D J
authors.initials: DJ
authors.lastname: Antonio
authors.forename: P A
authors.initials: PA
authors.lastname: Boyle
authors.forename: T
authors.initials: T
authors.lastname: Blum
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authors.initials: NH
authors.lastname: Christ
authors.forename: S D
authors.initials: SD
authors.lastname: Cohen
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authors.lastname: Dawson
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authors.initials: T
authors.lastname: Izubuchi
authors.forename: R D
authors.initials: RD
authors.lastname: Kenway
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authors.lastname: Jung
authors.forename: S
authors.initials: S
authors.lastname: Li
authors.forename: M F
authors.initials: MF
authors.lastname: Lin
authors.forename: R D
authors.initials: RD
authors.lastname: Mawhinney
authors.forename: J
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authors.lastname: Noaki
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authors.initials: S
authors.lastname: Ohta
authors.forename: B J
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authors.lastname: Pendleton
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authors.initials: EE
authors.lastname: Scholz
authors.forename: A
authors.initials: A
authors.lastname: Soni
authors.forename: R J
authors.initials: RJ
authors.lastname: Tweedie
authors.forename: A
authors.initials: A
authors.lastname: Yamaguchi