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- W2130960459 abstract "We study the octet SS-PP correlator within resonance chiral theory up to the one-loop level, i.e., up to next-to-leading order in the 1/Nc expansion. We will require that our correlator follows the power behaviour prescribed by the operator product expansion at high euclidian momentum. Nevertheless, we will not make use of short-distance constraints from other observables. Likewise, the high-energy behaviour will be demanded for the whole correlator, not for individual absorptive channels. The amplitude is progressively improved by considering more and more complicated operators in the hadronic lagrangian. Matching the resonance chiral theory result with chiral perturbation theory at low energies produces the estimates L_8(mu)^{SU(3)} = (1.0+-0.4)10^-3 and C_{38}(mu)^{SU(3)} = (8+-5) 10^-6 for mu=770 MeV. The effect of alternative renormalization schemes is also discussed in the article." @default.
- W2130960459 created "2016-06-24" @default.
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- W2130960459 date "2010-03-18" @default.
- W2130960459 modified "2023-10-07" @default.
- W2130960459 title "High energy constraints in the octetSS−PPcorrelator and resonance saturation at next-to-leading order in1/NC" @default.
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- W2130960459 doi "https://doi.org/10.1103/physrevd.81.056005" @default.
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