Graviton loops and brane observables

We discuss how to consistently perform effective Lagrangian computations in quantum gravity with branes in compact extra dimensions. A reparametrization invariant and infrared finite result is obtained in a non trivial way. It is crucial to properly account for brane fluctuations and to correctly id...

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Detalles Bibliográficos
Autores principales: Contino, Roberto, Pilo, Luigi, Rattazzi, Riccardo, Strumia, Alessandro
Lenguaje:eng
Publicado: 2001
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1088/1126-6708/2001/06/005
http://cds.cern.ch/record/490627
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author Contino, Roberto
Pilo, Luigi
Rattazzi, Riccardo
Strumia, Alessandro
author_facet Contino, Roberto
Pilo, Luigi
Rattazzi, Riccardo
Strumia, Alessandro
author_sort Contino, Roberto
collection CERN
description We discuss how to consistently perform effective Lagrangian computations in quantum gravity with branes in compact extra dimensions. A reparametrization invariant and infrared finite result is obtained in a non trivial way. It is crucial to properly account for brane fluctuations and to correctly identify physical observables. Our results correct some confusing claims in the literature. We discuss the implications of graviton loops on electroweak precision observables and on the muon g-2 in models with large extra dimensions. We model the leading effects, not controlled by effective field theory, by introducing a hard momentum cut-off.
id cern-490627
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2001
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spelling cern-4906272023-10-04T06:57:00Zdoi:10.1088/1126-6708/2001/06/005http://cds.cern.ch/record/490627engContino, RobertoPilo, LuigiRattazzi, RiccardoStrumia, AlessandroGraviton loops and brane observablesParticle Physics - PhenomenologyWe discuss how to consistently perform effective Lagrangian computations in quantum gravity with branes in compact extra dimensions. A reparametrization invariant and infrared finite result is obtained in a non trivial way. It is crucial to properly account for brane fluctuations and to correctly identify physical observables. Our results correct some confusing claims in the literature. We discuss the implications of graviton loops on electroweak precision observables and on the muon g-2 in models with large extra dimensions. We model the leading effects, not controlled by effective field theory, by introducing a hard momentum cut-off.We discuss how to consistently perform effective Lagrangian computations in quantum gravity with branes in compact extra dimensions. A reparametrization invariant and infrared finite result is obtained in a non trivial way. It is crucial to properly account for brane fluctuations and to correctly identify physical observables. Our results correct some confusing claims in the literature. We discuss the implications of graviton loops on electroweak precision observables and on the muon g-2 in models with large extra dimensions. We model the leading effects, not controlled by effective field theory, by introducing a hard momentum cut-off.hep-ph/0103104CERN-TH-2000-383IFUP-TH-2000-24SNS-PH-01-04CERN-TH-2000-383IFUP-TH-2000-24SNS-PH-2001-04oai:cds.cern.ch:4906272001-03-10
spellingShingle Particle Physics - Phenomenology
Contino, Roberto
Pilo, Luigi
Rattazzi, Riccardo
Strumia, Alessandro
Graviton loops and brane observables
title Graviton loops and brane observables
title_full Graviton loops and brane observables
title_fullStr Graviton loops and brane observables
title_full_unstemmed Graviton loops and brane observables
title_short Graviton loops and brane observables
title_sort graviton loops and brane observables
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1088/1126-6708/2001/06/005
http://cds.cern.ch/record/490627
work_keys_str_mv AT continoroberto gravitonloopsandbraneobservables
AT piloluigi gravitonloopsandbraneobservables
AT rattazziriccardo gravitonloopsandbraneobservables
AT strumiaalessandro gravitonloopsandbraneobservables

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