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Quark–lepton mass relation in a realistic extension of the Standard Model

Quark–lepton mass relation in a realistic extension of the Standard Model
Quark–lepton mass relation in a realistic extension of the Standard Model
We propose a realistic A4A4 extension of the Standard Model involving a particular quark–lepton mass relation, namely that the ratio of the third family mass to the geometric mean of the first and second family masses are equal for down-type quarks and charged leptons. This relation, which is approximately renormalization group invariant, is usually regarded as arising from the Georgi–Jarlskog relations, but in the present model there is no unification group or supersymmetry. In the neutrino sector we propose a simple modification of the so-called Zee–Wolfenstein mass matrix pattern which allows an acceptable reactor angle along with a deviation of the atmospheric and solar angles from their bi-maximal values. Quark masses, mixing angles and CP violation are well described by a numerical fit.
0370-2693
68-72
King, S.F.
f8c616b7-0336-4046-a943-700af83a1538
Morisi, S.
1aa275b1-afd1-47b6-97bd-24268cd82fc6
Peinado, E.
e4f05b8e-f75e-4208-86c9-132497ebb4c1
Valle, J.W.F.
fe5b9f6e-1f4f-49da-b448-ca2171551ae7
King, S.F.
f8c616b7-0336-4046-a943-700af83a1538
Morisi, S.
1aa275b1-afd1-47b6-97bd-24268cd82fc6
Peinado, E.
e4f05b8e-f75e-4208-86c9-132497ebb4c1
Valle, J.W.F.
fe5b9f6e-1f4f-49da-b448-ca2171551ae7

King, S.F., Morisi, S., Peinado, E. and Valle, J.W.F. (2013) Quark–lepton mass relation in a realistic extension of the Standard Model. Physics Letters B, 724 (1-3), 68-72. (doi:10.1016/j.physletb.2013.05.067).

Record type: Article

Abstract

We propose a realistic A4A4 extension of the Standard Model involving a particular quark–lepton mass relation, namely that the ratio of the third family mass to the geometric mean of the first and second family masses are equal for down-type quarks and charged leptons. This relation, which is approximately renormalization group invariant, is usually regarded as arising from the Georgi–Jarlskog relations, but in the present model there is no unification group or supersymmetry. In the neutrino sector we propose a simple modification of the so-called Zee–Wolfenstein mass matrix pattern which allows an acceptable reactor angle along with a deviation of the atmospheric and solar angles from their bi-maximal values. Quark masses, mixing angles and CP violation are well described by a numerical fit.

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Published date: 9 July 2013
Organisations: Physics & Astronomy

Identifiers

Local EPrints ID: 369298
URI: http://eprints.soton.ac.uk/id/eprint/369298
ISSN: 0370-2693
PURE UUID: a141642b-3590-4a29-91d2-9db9d2d9a545

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Date deposited: 23 Sep 2014 12:43
Last modified: 11 Nov 2019 20:49

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