TY  - JOUR
AU  - Dürr, S.
AU  - Fodor, Z.
AU  - Hoelbling, C.
AU  - Katz, S.D.
AU  - Krieg, S.
AU  - Kurth, T.
AU  - Lellouch, L.
AU  - Lippert, T.
AU  - Ramos, A.
AU  - Szabó, K.
TI  - Ratio FK/F Pi in QCD
JO  - Physical review / D
VL  - 81
IS  - 5
SN  - 1550-7998
CY  - [S.l.]
PB  - Soc.
M1  - PreJuSER-9794
SP  - 054507
PY  - 2010
N1  - Computations were performed on Blue Gene supercomputers at F. Z. Julich and IDRIS (GENCI), as well as on clusters at Wuppertal and CPT. This work is supported in part by the U.S. Department of Energy under Grant No. DE-FG02-05ER25681, EU grant I3HP, OTKA grant AT049652, DFG grant FO 502/ 1-2, SFB/ TR-55, EU RTN contract MRTN-CT-2006-035482 (FLAVIAnet) and by the CNRS's GDR Grant No. 2921 and PICS Grant No. 4707.
AB  - We determine the ratio F-K/ F-pi in QCD with N-f =2 + 1 flavors of sea quarks, based on a series of lattice calculations with three different lattice spacings, large volumes, and a simulated pion mass reaching down to about 190 MeV. We obtain F-K / F-pi = 1.192(7)(stat)(6)(syst). This result is then used to give an updated value of the Cabibbo-Kobayashi-Maskawa) matrix element vertical bar V-us vertical bar. The unitarity relation for the first row of this matrix is found to be well observed.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000276194200075
DO  - DOI:10.1103/PhysRevD.81.054507
UR  - https://juser.fz-juelich.de/record/9794
ER  -