Cross-fertilising extra gauge boson searches at the LHC

Araz, Jack Y.; Frank, Mariana; Fuks, Benjamin; Moretti, Stefano; Özdal, Özer

doi:10.1007/jhep11(2021)014

Cited by 5 publications

(4 citation statements)

References 65 publications

(85 reference statements)

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“…leptonic decay channel Z → e + e − within the green shaded region. We also note that the calculations based on U (1) ψ model indicate the accepted region for the mass of Z is where M Z > 4.2 TeV, compatible with other works pertaining to Z phenomenology [66,67]. Other than that, our solution for BM IV is in full agreement with the results of U (1) ψ model below and above the exclusion limits.…”

Section: Z Phenomenologysupporting

confidence: 90%

Reconciling collider signals, dark matter, and the muon anomalous magnetic moment in the supersymmetric $ U(1)_{R}\times U(1)_{B-L}$ model

Dehghani¹,

Frank²

2023

Preprint

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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 (X R , X R ) 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 the dark matter candidates that satisfy all the experimental constraints. We explore the collider signals of various scenarios including different benchmarks and their significance versus standard model background. To complement our analysis, we perform recasting of several LHC analyses to verify the credibility of different 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 with the model, we find points in the parameter space consistent within 2σ from the average measured value, employing non-universality at the GUT scale.

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Section: Z Phenomenologysupporting

confidence: 90%

Reconciling collider signals, dark matter, and the muon anomalous magnetic moment in the supersymmetric $ U(1)_{R}\times U(1)_{B-L}$ model

Dehghani¹,

Frank²

2023

Preprint

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show abstract

“…Looking at figure 14, we see that BM IV and most of the solutions satisfying the dark matter constraints obey the exclusion limits of Z production cross section followed by the leptonic decay channel Z → e + e − within the green shaded region. We also note that the calculations based on U (1) ψ model indicate the accepted region for the mass of Z is where M Z > 4.2 TeV, compatible with other works pertaining to Z phenomenology [71,72]. Other than that, our solution for BM IV is in full agreement with the results of U (1) ψ model below and above the exclusion limits.…”

Section: Z Phenomenologysupporting

confidence: 90%

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

Dehghani

Frank

2023

J. High Energ. Phys.

Self Cite

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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 $$ \left({\upchi}_R,{\overline{\upchi}}_R\right) $$ χ R χ ¯ R 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 MGUT 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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“…Phenomenological studies based on combined NC and CC searches have been performed in ref [44]. in the context of the Sequential Standard Model and Left-Right Symmetric Models.…”

mentioning

confidence: 99%

Enhancing the Large Hadron Collider sensitivity to charged and neutral broad resonances of new gauge sectors

Fiaschi

Giuli

Hautmann

et al. 2022

J. High Energ. Phys.

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In scenarios beyond the Standard Model (BSM) characterised by charged (W′) or neutral (Z′) massive gauge bosons with large width, resonant mass searches are not very effective, so that one has to exploit the tails of the mass distributions measured at the Large Hadron Collider (LHC). In this case, the LHC sensitivity to new physics signals is influenced significantly by systematic uncertainties associated with the Parton Distribution Functions (PDF), particularly in the valence quark sector relevant for the multi-TeV mass region. As a BSM framework featuring such conditions, we consider the 4-Dimensional Composite Higgs Model (4DCHM), in which multiple W′ and Z′ broad resonances are present, with strongly correlated properties. By using the QCD tool xFitter, we study the implications on W′ and Z′ searches in Drell-Yan (DY) lepton decay channels that follow from the reduction of PDF uncertainties obtained through combining high-statistics precision measurements of DY lepton-charge and forward-backward asymmetries. We find that the sensitivity to the BSM states is greatly increased with respect to the case of base PDF sets, thereby enabling one to set more stringent limits on (or indeed discover) such new particles, both independently and in correlated searches.

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Cross-fertilising extra gauge boson searches at the LHC

Cited by 5 publications

References 65 publications

Reconciling collider signals, dark matter, and the muon anomalous magnetic moment in the supersymmetric $ U(1)_{R}\times U(1)_{B-L}$ model

Reconciling collider signals, dark matter, and the muon anomalous magnetic moment in the supersymmetric $ U(1)_{R}\times U(1)_{B-L}$ model

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

Enhancing the Large Hadron Collider sensitivity to charged and neutral broad resonances of new gauge sectors

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