Analytic estimates from large-Nc QCD, the chiral quark model, and next-to-leading-order chiral perturbation theory indicate the strange tensor charge in the neutron is of order 0.1 to 0.3 of the valence charges, contradicting lattice QCD values.
SU(3) Clebsch-Gordan Coefficients for Baryon-Meson Coupling at Arbitrary N_c
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abstract
We present explicit formulae for the SU(3) Clebsch-Gordan coefficients that are relevant for the couplings of large N_c baryons to mesons. In particular, we compute the Clebsch-Gordan series for the coupling of the octet (associated with mesons, and remains the correct representation at large N_c) to the large N_c analogs of the baryon octet and decuplet representations.
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A strange contribution to the neutron EDM
Analytic estimates from large-Nc QCD, the chiral quark model, and next-to-leading-order chiral perturbation theory indicate the strange tensor charge in the neutron is of order 0.1 to 0.3 of the valence charges, contradicting lattice QCD values.