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Non-minimal flavour violation in A4 × SU(5) SUSY GUTs with smuon assisted dark matter

Non-minimal flavour violation in A4 × SU(5) SUSY GUTs with smuon assisted dark matter
Non-minimal flavour violation in A4 × SU(5) SUSY GUTs with smuon assisted dark matter

We study CP-conserving non-minimal flavour violation in A4 × SU(5) inspired Supersymmetric Grand Unified Theories (GUTs), focussing on the regions of parameter space where dark matter is successfully accommodated due to a light right-handed smuon a few GeV heavier than the lightest neutralino. In this region of parameter space we find that some of the flavour-violating parameters are constrained by the requirement of the dark matter relic density, due to the delicate interplay between the smuon and neutralino masses. By scanning over GUT scale flavour violating parameters, constrained by low-energy quark and lepton flavour violating observables, we find a striking difference in the results in which individual parameters are varied to those where multiple parameters are varied simultaneously, where the latter relaxes the constraints on flavour violating parameters due to cancellations and/or correlations. Since charged lepton-flavour violation provides the strongest constraints within a GUT framework, due to relations between quark and lepton flavour violation, we examine in detail a prominent correlation between some of the flavour violating parameters at the GUT scale consistent with the stringent lepton flavour violating process μ → eγ. We also examine the relation between GUT scale and low scale flavour violating parameters, for both quarks and leptons, and show how the usual expectations may be violated due to the correlations when multiple parameters are varied simultaneously.

Supersymmetry Phenomenology
1126-6708
1-30
Bernigaud, Jordan
b587cef9-f742-418a-92c6-d09cac6edd49
Herrmann, Björn
60e46709-ee15-42b8-891a-cd712ad562bd
King, Stephen F.
f8c616b7-0336-4046-a943-700af83a1538
Rowley, Samuel J.
ab8cb79d-627e-4e1c-834a-8a16f12fc65a
Bernigaud, Jordan
b587cef9-f742-418a-92c6-d09cac6edd49
Herrmann, Björn
60e46709-ee15-42b8-891a-cd712ad562bd
King, Stephen F.
f8c616b7-0336-4046-a943-700af83a1538
Rowley, Samuel J.
ab8cb79d-627e-4e1c-834a-8a16f12fc65a

Bernigaud, Jordan, Herrmann, Björn, King, Stephen F. and Rowley, Samuel J. (2019) Non-minimal flavour violation in A4 × SU(5) SUSY GUTs with smuon assisted dark matter. Journal of High Energy Physics, 2019 (3), 1-30, [67]. (doi:10.1007/JHEP03(2019)067).

Record type: Article

Abstract

We study CP-conserving non-minimal flavour violation in A4 × SU(5) inspired Supersymmetric Grand Unified Theories (GUTs), focussing on the regions of parameter space where dark matter is successfully accommodated due to a light right-handed smuon a few GeV heavier than the lightest neutralino. In this region of parameter space we find that some of the flavour-violating parameters are constrained by the requirement of the dark matter relic density, due to the delicate interplay between the smuon and neutralino masses. By scanning over GUT scale flavour violating parameters, constrained by low-energy quark and lepton flavour violating observables, we find a striking difference in the results in which individual parameters are varied to those where multiple parameters are varied simultaneously, where the latter relaxes the constraints on flavour violating parameters due to cancellations and/or correlations. Since charged lepton-flavour violation provides the strongest constraints within a GUT framework, due to relations between quark and lepton flavour violation, we examine in detail a prominent correlation between some of the flavour violating parameters at the GUT scale consistent with the stringent lepton flavour violating process μ → eγ. We also examine the relation between GUT scale and low scale flavour violating parameters, for both quarks and leptons, and show how the usual expectations may be violated due to the correlations when multiple parameters are varied simultaneously.

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Bernigaud 2019 Article Non-minimal Flavour Violation - Version of Record
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More information

Accepted/In Press date: 1 March 2019
e-pub ahead of print date: 13 March 2019
Published date: March 2019
Keywords: Supersymmetry Phenomenology

Identifiers

Local EPrints ID: 429542
URI: http://eprints.soton.ac.uk/id/eprint/429542
ISSN: 1126-6708
PURE UUID: a70ba92a-8770-4192-934b-ff30169b242a

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Date deposited: 29 Mar 2019 17:30
Last modified: 07 Oct 2020 00:52

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