S3 flavored left-right symmetric model of quarks

Research output: Contribution to journalArticle

Abstract

We construct a model based on the electroweak gauge group SU(2)L×SU(2)R×U(1)B-L augmented by an S3 symmetry. We assign nontrivial S3 transformation properties to the quarks, and consequently we need two scalar bidoublets. Despite the extra bidoublet, we have only six Yukawa couplings thanks to the discrete symmetry. Diagonalization of the quark mass matrices shows that at the leading order only the first two generations mix, resulting in a block diagonal CKM matrix, and the first generation quarks are massless. Inclusion of subleading terms produces an acceptable CKM matrix up to corrections of O(λ4). As for the first generation quark masses, we obtain a satisfactory value for mu/md. The masses themselves, though in the same ballpark, turn out to be somewhat smaller than the accepted range.

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Authors
Organisations
External organisations
  • University of Calcutta
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Subatomic Physics
Original languageEnglish
Article number115001
JournalPhysical Review D
Volume98
Issue number11
Publication statusPublished - 2018 Dec 1
Publication categoryResearch
Peer-reviewedYes