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The flavor of quantum gravity
journal contribution
posted on 2023-06-08, 12:39 authored by Xavier CalmetXavier Calmet, Dionysios Fragkakis, Nina GausmannWe 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, $\mu \to e \gamma$ 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 $\mu \to e \gamma$ and the limit on the neutron electric dipole moment. These bounds are in the few TeV region. However, the bound obtained from proton decay is much more severe and of the order of $1 \times 10^6$ GeV.
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Publication status
- Published
Journal
European Physical Journal CISSN
1434-6044Publisher
EDP SciencesExternal DOI
Issue
11Volume
C71Page range
1781-1784Department affiliated with
- Physics and Astronomy Publications
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- No
Peer reviewed?
- Yes
Legacy Posted Date
2012-10-17Usage metrics
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