Asymptotically Safe Gravitons in Electroweak Precision Physics

Details Asymptotically Safe Gravitons in Electroweak Precision Physics Asymptotically Safe Gravitons in Electroweak Precision Physics

2010-12-06

arxiv.org/abs/1012.1118v2

Eur.Phys.J.C71:1676,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

Published version; added references and additional minor changes including appendix

Scientific paper

10.1140/epjc/s10052-011-1676-4

Asymptotic safety offers a field theory based UV completion to gravity. For low Planck scales, gravitational effects on low-energy precision observables cannot be neglected. We compute the contribution to the rho parameter from asymptotically safe gravitons and find that in contrast to effective theory, constraints on models with more than three extra dimensions are significantly weakened. The relative size of the trans-Planckian contribution increases proportional to the number of extra dimensions.

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