Safe glueballs and baryons

Thomas A. Ryttov, Kimmo Tuominen

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Sammanfattning

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.
Originalspråkengelska
Artikelnummer173
TidskriftJournal of High Energy Physics
Volym2019
Utgåva4
Antal sidor14
ISSN1029-8479
DOI
StatusPublicerad - 30 apr 2019
MoE-publikationstypA1 Tidskriftsartikel-refererad

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