Dirac gauginos, R symmetry and the 125 GeV Higgs

A bstract We study a supersymmetric scenario with a quasi exact R-symmetry in light of the discovery of a Higgs resonance with a mass of 125 GeV. In such a framework, the additional adjoint superfields, needed to give Dirac masses to the gauginos, contribute both to the Higgs mass and to electroweak...

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Bibliographic Details
Published in:The journal of high energy physics 2015-04, Vol.2015 (4), p.1, Article 89
Main Authors: Bertuzzo, Enrico, Frugiuele, Claudia, Grégoire, Thomas, Pontón, Eduardo
Format: Article
Language:English
Subjects:
beyond standard model
Classical and Quantum Gravitation
Elementary Particles
Higgs physics
High energy physics
Physics
Physics and Astronomy
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Regular Article - Theoretical Physics
Relativity Theory
String Theory
supersymmetric standard model
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Summary:A bstract We study a supersymmetric scenario with a quasi exact R-symmetry in light of the discovery of a Higgs resonance with a mass of 125 GeV. In such a framework, the additional adjoint superfields, needed to give Dirac masses to the gauginos, contribute both to the Higgs mass and to electroweak precision observables. We analyze the interplay between the two aspects, finding regions in parameter space in which the contributions to the precision observables are under control and a 125 GeV Higgs boson can be accommodated. We estimate the fine-tuning of the model finding regions of the parameter space still unexplored by the LHC with a fine-tuning considerably improved with respect to the minimal supersymmetric scenario. In particular, sizable non-holomorphic (non-supersoft) adjoints masses are required to reduce the fine-tuning.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP04(2015)089