Holographic conformal transition and light scalars

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(Universitat Autònoma de Barcelona. Departament de Física)
Pujolàs Boix, Oriol

(Institut de Física d'Altes Energies)
Salas Escobar, Lindber Ivan (Institut de Física d'Altes Energies)

Fecha:	2019
Resumen:	We present an holographic approach to strongly-coupled theories close to the conformal to non-conformal transition, trying to understand the presence of light scalars as recent lattice simulations seem to suggest. We find that the dilaton is always the lightest resonance, although not parametrically lighter than the others. We provide a simple analytic formula for the dilaton mass that allows us to understand this behavior. The pattern of the meson mass spectrum, as we get close to the conformal transition, is found to be quite similar to that in lattice simulations. We provide further predictions from holography that can be checked in the future. These five-dimensional models can also implement new solutions to the hierarchy problem, having implications for searches at the LHC and cosmology.
Nota:	Altres ajuts: funded by SCOAP3
Derechos:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Lengua:	Anglès
Documento:	Article ; recerca ; Versió publicada
Materia:	Beyond standard model ; Conformal field theory ; Large extra dimensions ; Technicolor and composite models
Publicado en:	Journal of high energy physics, Vol. 2019, Issue 10 (October 2019) , art. 202, ISSN 1029-8479

35 p, 1.4 MB

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