%0 Journal Article
%T The vector form factor at the next-to-leading order in 1/N-C: chiral couplings L-9(mu) and C-88(mu)-C-90(mu)
%A Pich, A.
%A Rosell, I.
%A Sanz-Cillero, J. J.
%J Journal of High Energy Physics
%D 2011
%V 02
%N 2
%I Springer
%@ 1126-6708
%G English
%F Pich_etal2011
%O ISI:000287939200009
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=620), last updated on Mon, 23 May 2011 15:11:37 +0000
%X Using the Resonance Chiral Theory Lagrangian, we perform a calculation of the vector form factor of the pion at the next-to-leading order (NLO) in the 1/N-C expansion. Imposing the correct QCD short-distance constraints, one fixes the amplitude in terms of the pion decay constant F and resonance masses. Its low momentum expansion determines then the corresponding O(p(4)) and O(p(6)) low-energy chiral couplings at NLO, keeping control of their renormalization scale dependence. At mu(0) = 0.77 GeV, we obtain L-9(mu(0)) = (7.9 +/- 0.4).10(-3) and C-88(mu(0)) – C-90(mu(0)) = (-4.6 +/- 0.4).10(-5).
%K 1/N Expansion
%K Chiral Lagrangians
%K QCD
%R 10.1007/JHEP02(2011)109
%U http://arXiv.org/abs/arXiv:1011.5771
%U https://doi.org/10.1007/JHEP02(2011)109
%P 109-23pp