https://doi.org/10.1140/epjc/s10052-011-1676-4
Regular Article - Theoretical Physics
Asymptotically safe gravitons in electroweak precision physics
SUPA, School of Physics and Astronomy, The University of Edinburgh, Edinburgh, Scotland, UK
* e-mail: E.gerwick@sms.ed.ac.uk
Received:
7
February
2011
Revised:
10
May
2011
Published online:
28
June
2011
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 ρ 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.
© Springer-Verlag / Società Italiana di Fisica, 2011
