TY - JOUR
T1 - The sextet gauge model, light Higgs, and the dilaton
AU - Fodor, Zoltan
AU - Holland, Kieran
AU - Kuti, Julius
AU - Nagrdi, Dniel
AU - Schroeder, Chris
AU - Wong, Chik Him
N1 - Funding Information:
We acknowledge support by the DOE under grant DE-FG02-90ER40546, by the NSF under grants 0704171 and 0970137, by the EU Framework Programme 7 grant (FP7/2007-2013)/ERC No 208740, and by the Deutsche Forschungsgemeinschaft grant SFB-TR 55. Computational resources were provided by USQCD at Fermilab and JLab, by the NSF XSEDE program, and by the University of Wuppertal. KH wishes to thank the Institute for Theoretical Physics and the Albert Einstein Center for Fundamental Physics at Bern University for their support. KH and JK wish to thank the Galileo Galilei Institute for Theoretical Physics and INFN for their hospitality and support at the workshop "New Frontiers in Lattice Gauge Theories".
PY - 2012
Y1 - 2012
N2 - The frequently discussed strongly interacting gauge theory with a fermion flavor doublet in the two-index symmetric (sextet) representation of the SU(3) color gauge group is investigated [1]. The chiral condensate and the mass spectrum are consistent with chiral symmetry breaking (cSB) at vanishing fermion mass. In contrast, sextet fermion mass deformations of spectral properties are not consistent with leading conformal scaling behavior near the critical surface of a conformal theory. A recent paper [2] which could not resolve the conformal fixed point of the gauge coupling from the slowly walking scenario of a very small nearly vanishing b-function is not in conflict with cSB reported here. A light Higgs impostor could emerge as the dilaton from spontaneous symmetry breaking of scale invariance or, without the dilaton mechanism, as a composite state.
AB - The frequently discussed strongly interacting gauge theory with a fermion flavor doublet in the two-index symmetric (sextet) representation of the SU(3) color gauge group is investigated [1]. The chiral condensate and the mass spectrum are consistent with chiral symmetry breaking (cSB) at vanishing fermion mass. In contrast, sextet fermion mass deformations of spectral properties are not consistent with leading conformal scaling behavior near the critical surface of a conformal theory. A recent paper [2] which could not resolve the conformal fixed point of the gauge coupling from the slowly walking scenario of a very small nearly vanishing b-function is not in conflict with cSB reported here. A light Higgs impostor could emerge as the dilaton from spontaneous symmetry breaking of scale invariance or, without the dilaton mechanism, as a composite state.
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M3 - Conference article
AN - SCOPUS:85030094308
VL - Part F130497
JO - Proceedings of Science
JF - Proceedings of Science
SN - 1824-8039
M1 - 024
T2 - 30th International Symposium on Lattice Field Theory, Lattice 2012
Y2 - 24 June 2012 through 29 June 2012
ER -