CKM pattern from localized generations in extra dimension

Theoretical Physics


We revisit the issue of the quark masses and mixing angles in the framework of large extra dimension. We consider three identical standard model families resulting from higher-dimensional fields localized on different branes embedded in a large extra dimension. Furthermore we use a decaying profile in the bulk different form previous works. With the Higgs field also localized on a different brane, the hierarchy of masses between the families results from their different positions in the extra space. When the left-handed doublet and the right-handed singlets are localized with different couplings on the branes, we found a set of brane locations in one extra dimension which leads to the correct quark masses and mixing angles with the sufficient strength of CP-violation. We see that the decaying profile of the Higgs field plays a crucial role for producing the hierarchies in a rather natural way.


Yukawa Coupling Quark Masse Extra Dimension Zero Mode Extra Space 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  1. 1.William I. Fine Theoretical Physics InstituteUniversity of MinnesotaMinneapolisUSA
  2. 2.Ecole Polytechnique Fédérale de LausanneLausanneSwitzerland

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