Strong CP Problem with $10^{32}$ Standard Model Copies

We show that a recently proposed solution to the Hierarchy Problem simultaneously solves the Strong CP Problem, without requiring an axion or any further new physics. Consistency of black hole physics implies a non-trivial relation between the number of particle species and particle masses, so that...

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Detalles Bibliográficos
Autores principales: Dvali, Gia, Farrar, Glennys R.
Lenguaje:eng
Publicado: 2007
Materias:
Particle Physics - Theory
Acceso en línea:https://dx.doi.org/10.1103/PhysRevLett.101.011801
http://cds.cern.ch/record/1076635
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author Dvali, Gia
Farrar, Glennys R.
author_facet Dvali, Gia
Farrar, Glennys R.
author_sort Dvali, Gia
collection CERN
description We show that a recently proposed solution to the Hierarchy Problem simultaneously solves the Strong CP Problem, without requiring an axion or any further new physics. Consistency of black hole physics implies a non-trivial relation between the number of particle species and particle masses, so that with ~10^{32} copies of the standard model, the TeV scale is naturally explained. At the same time, as shown here, this setup predicts a typical expected value of the strong-CP parameter in QCD of theta ~ 10^{-9}. This strongly motivates a more sensitive measurement of the neutron electric dipole moment.
id cern-1076635
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2007
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spelling cern-10766352023-03-14T19:50:08Zdoi:10.1103/PhysRevLett.101.011801http://cds.cern.ch/record/1076635engDvali, GiaFarrar, Glennys R.Strong CP Problem with $10^{32}$ Standard Model CopiesParticle Physics - TheoryWe show that a recently proposed solution to the Hierarchy Problem simultaneously solves the Strong CP Problem, without requiring an axion or any further new physics. Consistency of black hole physics implies a non-trivial relation between the number of particle species and particle masses, so that with ~10^{32} copies of the standard model, the TeV scale is naturally explained. At the same time, as shown here, this setup predicts a typical expected value of the strong-CP parameter in QCD of theta ~ 10^{-9}. This strongly motivates a more sensitive measurement of the neutron electric dipole moment.We show that a recently proposed solution to the Hierarchy Problem simultaneously solves the Strong CP Problem, without requiring an axion or any further new physics. Consistency of black hole physics implies a non-trivial relation between the number of particle species and particle masses, so that with ~10^{32} copies of the standard model, the TeV scale is naturally explained. At the same time, as shown here, this setup predicts a typical expected value of the strong-CP parameter in QCD of theta ~ 10^{-9}. This strongly motivates a more sensitive measurement of the neutron electric dipole moment.arXiv:0712.3170oai:cds.cern.ch:10766352007-12-20
spellingShingle Particle Physics - Theory
Dvali, Gia
Farrar, Glennys R.
Strong CP Problem with $10^{32}$ Standard Model Copies
title Strong CP Problem with $10^{32}$ Standard Model Copies
title_full Strong CP Problem with $10^{32}$ Standard Model Copies
title_fullStr Strong CP Problem with $10^{32}$ Standard Model Copies
title_full_unstemmed Strong CP Problem with $10^{32}$ Standard Model Copies
title_short Strong CP Problem with $10^{32}$ Standard Model Copies
title_sort strong cp problem with $10^{32}$ standard model copies
topic Particle Physics - Theory
url https://dx.doi.org/10.1103/PhysRevLett.101.011801
http://cds.cern.ch/record/1076635
work_keys_str_mv AT dvaligia strongcpproblemwith1032standardmodelcopies
AT farrarglennysr strongcpproblemwith1032standardmodelcopies

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