Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

S3 symmetry and the quark mixing matrix

Das, Dipankar LU ; Dey, Ujjal Kumar and Pal, Palash B. (2016) In Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 753. p.315-318
Abstract

We impose an S3 symmetry on the quark fields under which two of three quarks transform like a doublet and the remaining one as singlet, and use a scalar sector with the same structure of SU(2) doublets. After gauge symmetry breaking, a Z2 subgroup of the S3 remains unbroken. We show that this unbroken subgroup can explain the approximate block structure of the CKM matrix. By allowing soft breaking of the S3 symmetry in the scalar sector, we show that one can generate the small elements, of quadratic or higher order in the Wolfenstein parametrization of the CKM matrix. We also predict the existence of exotic new scalars, with unconventional decay properties, which can be used to test our model... (More)

We impose an S3 symmetry on the quark fields under which two of three quarks transform like a doublet and the remaining one as singlet, and use a scalar sector with the same structure of SU(2) doublets. After gauge symmetry breaking, a Z2 subgroup of the S3 remains unbroken. We show that this unbroken subgroup can explain the approximate block structure of the CKM matrix. By allowing soft breaking of the S3 symmetry in the scalar sector, we show that one can generate the small elements, of quadratic or higher order in the Wolfenstein parametrization of the CKM matrix. We also predict the existence of exotic new scalars, with unconventional decay properties, which can be used to test our model experimentally.

(Less)
Please use this url to cite or link to this publication:
author
; and
publishing date
type
Contribution to journal
publication status
published
subject
in
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
volume
753
pages
4 pages
publisher
Elsevier
external identifiers
  • scopus:84955264303
ISSN
0370-2693
DOI
10.1016/j.physletb.2015.12.038
language
English
LU publication?
no
id
3ba74154-badb-4e5f-be8e-1fee68a5b143
date added to LUP
2019-05-22 15:30:17
date last changed
2022-03-10 03:58:45
@article{3ba74154-badb-4e5f-be8e-1fee68a5b143,
  abstract     = {{<p>We impose an S<sub>3</sub> symmetry on the quark fields under which two of three quarks transform like a doublet and the remaining one as singlet, and use a scalar sector with the same structure of SU(2) doublets. After gauge symmetry breaking, a Z2 subgroup of the S<sub>3</sub> remains unbroken. We show that this unbroken subgroup can explain the approximate block structure of the CKM matrix. By allowing soft breaking of the S<sub>3</sub> symmetry in the scalar sector, we show that one can generate the small elements, of quadratic or higher order in the Wolfenstein parametrization of the CKM matrix. We also predict the existence of exotic new scalars, with unconventional decay properties, which can be used to test our model experimentally.</p>}},
  author       = {{Das, Dipankar and Dey, Ujjal Kumar and Pal, Palash B.}},
  issn         = {{0370-2693}},
  language     = {{eng}},
  month        = {{02}},
  pages        = {{315--318}},
  publisher    = {{Elsevier}},
  series       = {{Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics}},
  title        = {{S<sub>3</sub> symmetry and the quark mixing matrix}},
  url          = {{http://dx.doi.org/10.1016/j.physletb.2015.12.038}},
  doi          = {{10.1016/j.physletb.2015.12.038}},
  volume       = {{753}},
  year         = {{2016}},
}