Muon g − 2 in gauge mediation without SUSY CP problem

A bstract We discuss gauge mediated supersymmetry breaking models which explain the observed muon anomalous magnetic moment and the Higgs boson mass simultaneously. The successful explanation requires the messenger sector which violates the relation motivated by the grand unification theory (GUT). T...

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Bibliographic Details
Published in:The journal of high energy physics 2021-07, Vol.2021 (7), p.1-34, Article 98
Main Authors: Ibe, Masahiro, Kobayashi, Shin, Nakayama, Yuhei, Shirai, Satoshi
Format: Article
Language:English
Subjects:
Broken symmetry
Classical and Quantum Gravitation
Cosmic rays
CP violation
Elementary Particles
Flavors
Gravity
Higgs bosons
High energy physics
Large Hadron Collider
Leptons
Light
Magnetic moments
Mediation
Muons
Neutral currents
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Regular Article - Theoretical Physics
Relativity Theory
String Theory
Supersymmetry
Supersymmetry Phenomenology
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Summary:A bstract We discuss gauge mediated supersymmetry breaking models which explain the observed muon anomalous magnetic moment and the Higgs boson mass simultaneously. The successful explanation requires the messenger sector which violates the relation motivated by the grand unification theory (GUT). The naive violation of the GUT relation, however, ends up with the CP problem. We propose a model in which the phases of the gaugino masses are aligned despite the violation of the GUT relation. We also consider a model which generates the μ -term and the additional Higgs soft masses squared without causing CP violation. As a result, we find a successful model which explains the muon anomalous magnetic moment and the Higgs boson mass. The model is also free from the CP, flavor-changing neutral current and the lepton flavor violation problems caused by the subdominant gravity mediation effects. The lightest supersymmetric particles are gravitino/goldstini and the next-to-lightest ones are the Wino/Higgsinos in the typical parameter space. We also study the LHC constraints.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP07(2021)098