Fate of a recent conformal fixed point and β-function in the SU(3) BSM gauge theory with ten massless flavors

2018/12/10 by Fodor, Zoltan, Holland, Kieran, Kuti, Julius +2
#FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.1812.03972

Abstract

SU(3) gauge theory with N_f fermions in the fundamental representation serves as a theoretical testing ground for possible infrared conformal behavior, which could play a role in BSM composite Higgs models. We use lattice simulations to study the 10-flavor model, for which it has been claimed there is an infrared fixed point in the gauge coupling β-function. Our results suggest the opposite conclusion, namely we find no β-function fixed point in the explored range, with qualitative agreement with the 5-loop MS prediction. We comment on the inconsistency between our findings and other studies.

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