In the context of a warped extra dimension with standard model fields in the bulk, we obtain the general flavor structure of the radion couplings to fermions and show that the result is independent of the particular nature of the Higgs mechanism (bulk or brane localized). These couplings will be generically misaligned with respect to the fermion mass matrix when the fermion bulk mass parameters are not all degenerate. When the radion is light enough, the generic size of these tree-level flavor changing couplings will be strongly constrained by the experimental bounds on Delta F = 2 processes. At the LHC the possibility of a heavier radion decaying into top and charm quarks is then considered as a promising signal to probe the flavor structure of both the radion sector and the whole scenario.

Radion Mediated Flavor Changing Neutral Currents / Azatov, Aleksandr; Toharia, Manuel; Zhu, Lijun. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 80:3(2009), pp. 1-5. [10.1103/PhysRevD.80.031701]

Radion Mediated Flavor Changing Neutral Currents

Azatov Aleksandr
;
2009-01-01

Abstract

In the context of a warped extra dimension with standard model fields in the bulk, we obtain the general flavor structure of the radion couplings to fermions and show that the result is independent of the particular nature of the Higgs mechanism (bulk or brane localized). These couplings will be generically misaligned with respect to the fermion mass matrix when the fermion bulk mass parameters are not all degenerate. When the radion is light enough, the generic size of these tree-level flavor changing couplings will be strongly constrained by the experimental bounds on Delta F = 2 processes. At the LHC the possibility of a heavier radion decaying into top and charm quarks is then considered as a promising signal to probe the flavor structure of both the radion sector and the whole scenario.
2009
80
3
1
5
031701(R)
https://arxiv.org/abs/0812.2489
Azatov, Aleksandr; Toharia, Manuel; Zhu, Lijun
File in questo prodotto:
File Dimensione Formato  
PhysRevD.80.031701.pdf

non disponibili

Tipologia: Versione Editoriale (PDF)
Licenza: Non specificato
Dimensione 157.35 kB
Formato Adobe PDF
157.35 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/66257
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 25
  • ???jsp.display-item.citation.isi??? 25
social impact