Reconciling collider signals, dark matter, and the muon anomalous magnetic moment in the supersymmetric U(1) R × U(1) B−L model

Parham Dehghani (Department of Physics, Concordia University, 7141 Sherbrooke St. West, Montreal, QC, H4B 1R6, Canada) ; Mariana Frank (Department of Physics, Concordia University, 7141 Sherbrooke St. West, Montreal, QC, H4B 1R6, Canada)

We study the low-scale predictions of the supersymmetric model extended by U(1) R × U(1) B−L symmetry, obtained by breaking SO(10) symmetry at GUT scale via a left-right supersymmetric model. Two new singlet Higgs fields χ R χ ¯ R $$ \left({\upchi}_R,{\overline{\upchi}}_R\right) $$ are responsible for the U(1) R × U(1) B−L symmetry breaking to the standard model gauge group. We explore the phenomenology of this model by assuming universal and non-universal boundary conditions at the GUT scale and their effects in obtaining consistency among low-energy observables, dark matter experiments, muon magnetic moment measurements, and Z′ phenomenology. We examine different scenarios with both the lightest neutralino and sneutrino mass eigenstates as dark matter candidates. We explore the collider signals of various scenarios by including relevant benchmarks and exploring their significance versus standard model background. To complement our analysis, we perform recasting of several LHC analyses to verify the credibility of the benchmarks. We find that relaxing the universality conditions at M GUT can significantly improve the agreement of the model against the experimental bounds. While the muon anomalous magnetic moment is found to be the most challenging observable to fit within the model, we identify, allowing for non-universality at the GUT scale, points in the parameter space consistent within 2σ from the average measured value.

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      "title": "Reconciling collider signals, dark matter, and the muon anomalous magnetic moment in the supersymmetric U(1) R  \u00d7 U(1) B\u2212L  model"
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      "source": "Springer", 
      "value": "We study the low-scale predictions of the supersymmetric model extended by U(1) R  \u00d7 U(1) B\u2212L  symmetry, obtained by breaking SO(10) symmetry at GUT scale via a left-right supersymmetric model. Two new singlet Higgs fields   <math> <mfenced> <msub> <mi>\u03c7</mi> <mi>R</mi> </msub> <msub> <mover> <mi>\u03c7</mi> <mo>\u00af</mo> </mover> <mi>R</mi> </msub> </mfenced> </math>  $$ \\left({\\upchi}_R,{\\overline{\\upchi}}_R\\right) $$  are responsible for the U(1) R  \u00d7 U(1) B\u2212L  symmetry breaking to the standard model gauge group. We explore the phenomenology of this model by assuming universal and non-universal boundary conditions at the GUT scale and their effects in obtaining consistency among low-energy observables, dark matter experiments, muon magnetic moment measurements, and Z\u2032 phenomenology. We examine different scenarios with both the lightest neutralino and sneutrino mass eigenstates as dark matter candidates. We explore the collider signals of various scenarios by including relevant benchmarks and exploring their significance versus standard model background. To complement our analysis, we perform recasting of several LHC analyses to verify the credibility of the benchmarks. We find that relaxing the universality conditions at M GUT can significantly improve the agreement of the model against the experimental bounds. While the muon anomalous magnetic moment is found to be the most challenging observable to fit within the model, we identify, allowing for non-universality at the GUT scale, points in the parameter space consistent within 2\u03c3 from the average measured value."
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Published on:
01 June 2023
Publisher:
Springer
Published in:
Journal of High Energy Physics , Volume 2023 (2023)
Issue 6
Pages 1-51
DOI:
https://doi.org/10.1007/JHEP06(2023)001
arXiv:
2301.05959
Copyrights:
The Author(s)
Licence:
CC-BY-4.0

Fulltext files: