TY  - JOUR
AU  - Bernard, V.
AU  - Passemar, E.
PY  - 2010
DA  - 2010//
TI  - Chiral extrapolation of the strangeness changing scalar K pi form factor
T2  - J. High Energy Phys.
JO  - Journal of High Energy Physics
SP  - 001
EP  - 18pp
VL  - 04
IS  - 4
PB  - Springer
KW  - Lattice QCD
KW  - Chiral Lagrangians
AB  - We perform a chiral extrapolation of lattice data on the scalar K pi form factor and the ratio of the kaon and pion decay constants within Chiral Perturbation Theory to two loops. We determine the value of the scalar form factor at zero momentum transfer, at the Callan-Treiman point and at its soft kaon analog as well as its slope. Results are in good agreement with their determination from experiment using the standard couplings of quarks to the W boson. The slope is however rather large. A study of the convergence of the chiral expansion is also performed.
SN  - 1126-6708
UR  - http://lanl.arxiv.org/abs/0912.3792
UR  - https://doi.org/10.1007/JHEP04(2010)001
DO  - 10.1007/JHEP04(2010)001
LA  - English
N1  - ISI:000277473100070
ID  - Bernard+Passemar2010
ER  -