The flavor of quantum gravity |
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Authors: | Xavier Calmet Dionysios Fragkakis and Nina Gausmann |
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Institution: | (1) Department of Physics, University of Maryland, College Park, MD 20742-4111, USA |
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Abstract: | We develop an effective field theory to describe the coupling of non-thermal quantum black holes to particles such as those
of the Standard Model. The effective Lagrangian is determined by imposing that the production cross section of a non-thermal
quantum black hole be given by the usual geometrical cross section. Having determined the effective Lagrangian, we estimate
the contribution of a virtual hole to the anomalous magnetic moment of the muon, μ→eγ transition and to the electric dipole moment of the neutron. We obtain surprisingly weak bounds on the Planck mass due to
a chiral suppression factor in the calculated low energy observables. The tightest bounds come from μ→eγ and the limit on the neutron electric dipole moment. These bounds are in the few TeV region. |
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