TY - JOUR AU - Gómez Nicola, Ángel AU - Peláez Sagredo, José Ramón AU - Ruiz De Elvira Carrascal, Jacobo PY - 2010 DO - 10.1103/PhysRevD.82.074012 SN - 1550-7998 UR - https://hdl.handle.net/20.500.14352/44564 T2 - Physical review D AB - Four-quark correlators and the factorization hypothesis are analyzed in the meson sector within chiral perturbation theory. We define the four-quark condensate as lim(x -> 0) < T((q) over barq)(x)((q) over barq)(0)>, which is equivalent to other... LA - eng PB - Amer Physical Soc KW - Strange quarks KW - Order P(6) KW - One-loop KW - Qcd KW - Renormalization KW - Scattering KW - Chpt KW - Mass TI - Nonfactorization of four-quark condensates at low energies within chiral perturbation theory TY - journal article VL - 82 ER -