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)
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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)

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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)

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dc.contributor.author Pich Zardoya, Antonio
dc.contributor.author Rosell Escribà, Ignasi
dc.contributor.author Sanz Cillero, Juan José
dc.date.accessioned 2015-02-27T12:06:47Z
dc.date.available 2015-02-27T12:06:47Z
dc.date.issued 2011
dc.identifier.uri http://hdl.handle.net/10550/42517
dc.description.abstract 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(p4) and O(p6) low-energy chiral couplings at NLO, keeping control of their renormalization scale dependence. At mu0=0.77 GeV, we obtain L9(mu0) = (7.9 \pm 0.4) 10^{-3} and C88(mu0)-C90(mu0)=(-4.6 \pm 0.4) 10^{-5}.
dc.language.iso eng
dc.relation.ispartof Journal of High Energy Physics, 2011, vol. 2011, num. 2, p. 109
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Pich Zardoya, Antonio Rosell Escribà, Ignasi Sanz Cillero, Juan José 2011 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) Journal of High Energy Physics 2011 2 109
dc.subject Física
dc.title 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)
dc.type info:eu-repo/semantics/article
dc.date.updated 2015-02-27T12:06:47Z
dc.identifier.doi http://dx.doi.org/10.1007/JHEP02(2011)109
dc.identifier.idgrec 068042

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