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We present new results for the SU(3) "sextet model" with two flavorstransforming according to the two-index symmetric representation of the gaugegroup. The simulations are performed using unimproved Wilson fermions. Wemeasure the meson and baryon spectrum of the theory for multiple bare quarkmasses at two different lattice spacings. To address the pressing issue ofwhether the model is inside or below the conformal window, we compare thespectrum to the expectations for a theory with spontaneous chiral symmetrybreaking and to those of an IR conformal theory. Regardless of the answer(conformal or chirally broken), the theory is a cornerstone in ourunderstanding of near-conformal and composite dynamics, ranging fromTechnicolor models to unparticle physics. It is also interesting for thecomposite dynamics of vector-like singlets with respect to the Standard Modelinteractions.

Conformal symmetry vs. chiral symmetry breaking in the SU(3) sextet model