Mass anomalous dimension in SU(2) with six fundamental fermions

Preprint number: CP3-Origins-2010-28
Authors: Francis Bursa (Jesus College, Cambridge), Luigi Del Debbio (University of Edinburgh), Liam Keegan (University of Edinburgh), Claudio Pica (CP3-Origins), and Thomas Pickup (University of Oxford)
External link: arXiv.org

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We simulate SU(2) gauge theory with six massless fundamental Dirac fermions. We measure the running of the coupling and the mass in the Schroedinger Functional scheme. We observe very slow running of the coupling constant. We measure the mass anomalous dimension gamma, and find it is between 0.135 and 1.03 in the range of couplings consistent with the existence of an IR fixed point.