TY - JOUR
T1 - Extended investigation of the twelve-flavor β-function
AU - Fodor, Zoltán
AU - Holland, Kieran
AU - Kuti, Julius
AU - Nógrádi, Dániel
AU - Wong, Chik Him
N1 - Funding Information:
We acknowledge support by the DOE under grant DE- SC0009919, by the NSF under grants 1318220 and 1620845, by OTKA under the grant OTKA-NF-104034, and by the Deutsche Forschungsgemeinschaft grant SFB-TR 55. Computational resources were provided by the DOE INCITE program on the ALCF BG/Q platform, USQCD at Fermilab, by the University of Wuppertal, by Juelich Supercomputing Center on Juqueen and by the Institute for Theoretical Physics, Eotvos University. We are grateful to Szabolcs Borsanyi for his code development for the BG/Q platform. We are also grateful to Sandor Katz and Kalman Szabo for their CUDA code development.
Funding Information:
We acknowledge support by the DOE under grant DE- SC0009919 , by the NSF under grants 1318220 and 1620845 , by OTKA under the grant OTKA-NF-104034 , and by the Deutsche Forschungsgemeinschaft grant SFB-TR 55 . Computational resources were provided by the DOE INCITE program on the ALCF BG/Q platform, USQCD at Fermilab, by the University of Wuppertal, by Juelich Supercomputing Center on Juqueen and by the Institute for Theoretical Physics, Eotvos University. We are grateful to Szabolcs Borsanyi for his code development for the BG/Q platform. We are also grateful to Sandor Katz and Kalman Szabo for their CUDA code development.
Publisher Copyright:
© 2018 The Author(s)
PY - 2018/4/10
Y1 - 2018/4/10
N2 - We report new results from high precision analysis of an important BSM gauge theory with twelve massless fermion flavors in the fundamental representation of the SU(3) color gauge group. The range of the renormalized gauge coupling is extended from our earlier work [1] to probe the existence of an infrared fixed point (IRFP) in the β-function reported at two different locations, originally in [2] and at a new location in [3]. We find no evidence for the IRFP of the β-function in the extended range of the renormalized gauge coupling, in disagreement with [2,3]. New arguments to guard the existence of the IRFP remain unconvincing [4], including recent claims of an IRFP with ten massless fermion flavors [5,6] which we also rule out. Predictions of the recently completed 5-loop QCD β-function for general flavor number are discussed in this context.
AB - We report new results from high precision analysis of an important BSM gauge theory with twelve massless fermion flavors in the fundamental representation of the SU(3) color gauge group. The range of the renormalized gauge coupling is extended from our earlier work [1] to probe the existence of an infrared fixed point (IRFP) in the β-function reported at two different locations, originally in [2] and at a new location in [3]. We find no evidence for the IRFP of the β-function in the extended range of the renormalized gauge coupling, in disagreement with [2,3]. New arguments to guard the existence of the IRFP remain unconvincing [4], including recent claims of an IRFP with ten massless fermion flavors [5,6] which we also rule out. Predictions of the recently completed 5-loop QCD β-function for general flavor number are discussed in this context.
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U2 - 10.1016/j.physletb.2018.02.008
DO - 10.1016/j.physletb.2018.02.008
M3 - Article
AN - SCOPUS:85044676795
VL - 779
SP - 230
EP - 236
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
ER -