Neutral-kaon mixing from (2+1)-flavor domain-wall QCD.
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.
Antonio
D J
DJ
SUPA, School of Physics, The University of Edinburgh, Edinburgh, United Kingdom.
Boyle
P A
PA
Blum
T
T
Christ
N H
NH
Cohen
S D
SD
Dawson
C
C
Izubuchi
T
T
Kenway
R D
RD
Jung
C
C
Li
S
S
Lin
M F
MF
Mawhinney
R D
RD
Noaki
J
J
Ohta
S
S
Pendleton
B J
BJ
Scholz
E E
EE
Soni
A
A
Tweedie
R J
RJ
Yamaguchi
A
A