Abstract
We extend our previous study of the SU(3) gauge theory with ${N}_{f}=2$ flavors of fermions in the sextet representation of color. Our tool is the Schr\"odinger functional method. By changing the lattice action, we push the bulk transition of the lattice theory to stronger couplings and thus reveal the beta function and the mass anomalous dimension ${\ensuremath{\gamma}}_{m}$ over a wider range of coupling, out to ${g}^{2}\ensuremath{\simeq}11$. Our results are consistent with an infrared fixed point, but walking is not ruled out. Our main result is that ${\ensuremath{\gamma}}_{m}$ never exceeds 0.45, making the model unsuitable for walking technicolor. We use a novel method of extrapolation to the large-volume/continuum limit, tailored to near-conformal theories.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
