Constraint on a composite two Higgs doublet model from the electric dipole moment of the electron

Mahanta, Uma (1992) Constraint on a composite two Higgs doublet model from the electric dipole moment of the electron. In: Physics Letters B, 281 (3-4). pp. 320-324.

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Abstract

In this article we use the Barr-Zec mechanism for generating the electric dipole moment $d_e/e$ of the electron to impose an upper bound on the complex four Fermi term that appears in the high energy lagrangian of a composite two Higgs doublet model. We derive the most general, renormalizable, low energy effective lagrangian that arises from the high energy four Fermi lagrangian via the RG. Three unknown parameters appear in the $(mass)^ 2$ matrix of the neutral scalars. Two of them, which are not responsible for CP violation, are chosen so that the unitarity limit of Weinberg is realized. The remaining unknown parameter is the only quantity lhat is responsible for CP violation in this model and is constrained from above by the experimental upper bound on $d_e/e$.

Item Type:	Journal Article
Publication:	Physics Letters B
Publisher:	Elsevier
Additional Information:	Copyright of this article belongs to Elsevier.
Department/Centre:	Division of Physical & Mathematical Sciences > Centre for Theoretical Studies (Ceased to exist at the end of 2003)
Date Deposited:	06 Nov 2006
Last Modified:	19 Sep 2010 04:31
URI:	http://eprints.iisc.ac.in/id/eprint/8382

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