-transparent.png){kind=logo}
We determine D and D(s) decay constants from lattice QCD with 2% errors, 4 times better than experiment and previous theory: f(D(s))=241(3) MeV, f(D)=207(4) MeV, and fD(s))/f(D)=1.164(11). We also obtain f(K)/f(pi)=1.189(7) and (f(D(s))/f(D))/(f(K)/f(pi))=0.979(11). Combining with experiment gives V(us)=0.2262(14) and V(cs)/V(cd) of 4.43(41). We use a highly improved quark discretization on MILC gluon fields that include realistic sea quarks, fixing the u/d, s, and c masses from the pi, K, and eta(c) meson masses. This allows a stringent test against experiment for D and D(s) masses for the first time (to within 7 MeV).
| UI | MeSH Term | Description | Entries |
|---|
Related Publications
E Follana, and
C T H Davies, and
G P Lepage, and
J Shigemitsu, and
, and
April 2004,
Physical review letters,
E Follana, and
C T H Davies, and
G P Lepage, and
J Shigemitsu, and
, and
June 2011,
Physics letters. [Part B],
E Follana, and
C T H Davies, and
G P Lepage, and
J Shigemitsu, and
, and
April 2012,
Physical review letters,
E Follana, and
C T H Davies, and
G P Lepage, and
J Shigemitsu, and
, and
September 2005,
Physical review letters,
E Follana, and
C T H Davies, and
G P Lepage, and
J Shigemitsu, and
, and
January 1994,
Physical review. D, Particles and fields,
E Follana, and
C T H Davies, and
G P Lepage, and
J Shigemitsu, and
, and
May 2013,
Physical review letters,
E Follana, and
C T H Davies, and
G P Lepage, and
J Shigemitsu, and
, and
April 1988,
Physical review. D, Particles and fields,
E Follana, and
C T H Davies, and
G P Lepage, and
J Shigemitsu, and
, and
December 1995,
Physical review. D, Particles and fields,
E Follana, and
C T H Davies, and
G P Lepage, and
J Shigemitsu, and
, and
December 1986,
Physical review. D, Particles and fields,
E Follana, and
C T H Davies, and
G P Lepage, and
J Shigemitsu, and
, and
June 1994,
Physical review. D, Particles and fields,
