Safe glueballs and baryons

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http://hdl.handle.net/10138/301845

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Ryttov , T A & Tuominen , K 2019 , ' Safe glueballs and baryons ' , Journal of High Energy Physics , vol. 2019 , no. 4 , 173 . https://doi.org/10.1007/JHEP04(2019)173

Title: Safe glueballs and baryons
Author: Ryttov, Thomas A.; Tuominen, Kimmo
Contributor: University of Helsinki, Department of Physics
Date: 2019-04-30
Language: eng
Number of pages: 14
Belongs to series: Journal of High Energy Physics
ISSN: 1029-8479
URI: http://hdl.handle.net/10138/301845
Abstract: We consider a non-Abelian gauge theory with N-f fermions and discuss the possible existence of a non-trivial UV fixed point at large N-f . Specifically, we study the anomalous dimension of the (rescaled) glueball operator Tr F-2 to first order in 1/N-f by relating it to the derivative of the beta function at the fixed point. At the fixed point the anomalous dimension violates its unitarity bound and so the (rescaled) glueball operator is either decoupled or the fixed point does not exist. We also study the anomalous dimensions of the two spin-1/2 baryon operators to first order in 1/N-f for an SU(3) gauge theory with fundamental fermions and find them to be relatively small and well within their associated unitarity bounds.
Subject: 1/N Expansion
Lattice Quantum Field Theory
Renormalization Group
BETA-FUNCTION
114 Physical sciences
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