Spectrum and mass anomalous dimension of SU(2) adjoint QCD with two Dirac flavors

Bergner, Georg; Giudice, Pietro; Münster, Gernot; Montvay, Istvan; Piemonte, Stefano (2017). Spectrum and mass anomalous dimension of SU(2) adjoint QCD with two Dirac flavors. Physical review. D - particles, fields, gravitation, and cosmology, 96(3), 034504. American Physical Society 10.1103/PhysRevD.96.034504

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In this work we present the results of our investigation of SU(2) gauge theory with two Dirac fermions in the adjoint representation (aQCD2), which belongs to the class of strongly interacting gauge theories that are of basic interest for extensions of the Standard Model. We have done numerical lattice simulations of this theory at two different values of the gauge coupling and several fermion masses. Our results include the particle spectrum and the mass anomalous dimension. The spectrum contains new exotic fermion-gluon states and flavor-singlet mesons. The mass anomalous dimension is determined from the scaling of the masses and the mode number. The remnant dependence of the universal mass ratios and mass anomalous dimension on the gauge coupling indicates the relevance of scaling corrections, such that earlier estimations for the universal fixed point value of the mass anomalous dimension are incomplete without their inclusion.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Institute of Theoretical Physics

UniBE Contributor:

Bergner, Georg

Subjects:

500 Science > 530 Physics

ISSN:

1550-7998

Publisher:

American Physical Society

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

13 Dec 2017 14:03

Last Modified:

23 Oct 2019 23:51

Publisher DOI:

10.1103/PhysRevD.96.034504

ArXiv ID:

1610.01576

BORIS DOI:

10.7892/boris.107225

URI:

https://boris.unibe.ch/id/eprint/107225

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