Approaching the conformal window: systematic study of the particle spectrum in SU(2) field theory with Nf=2, 4 and 6

Abstract

It is expected that SU(2) gauge theory with $N_f$ fundamental fermions has an infrared fixed point when $N_f$ is between $\sim 6$ and 10. We study the hadron spectrum and scale setting in SU(2) gauge field theory with $N_f=2,4,6$ using hypercubic stout smeared Wilson-clover (HEX) action. The case $N_f=2$ is QCD-like, whereas $N_f=6$ is close to the lower edge of the conformal window. In our study the length scales are determined by using the gradient flow approach.

arXiv comment7 pages, 7 figures, presented at the 33rd International Symposium on Lattice Field Theory, 14 - 18 July 2015, Kobe, Japan

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Cited by in corpus (1)

• Strong dynamics, composite Higgs and the conformal window