Exotic Higgs Decays in U(1) Extensions of the MSSM

Athron, Peter; Williams, Anthony G.; Mühlleitner, Margarete; Nevzorov, R.

doi:10.1142/9789813224568_0079

Cited by 8 publications

(5 citation statements)

References 14 publications

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“…The constrained E 6 SSM (cE 6 SSM) is a version of the full E 6 SSM that exploits the properties of unification of E 6 and assumes universal scalar and gaugino soft masses at the GUT scale [241,242]. Predictions of the cE 6 SSM include contributions to the Higgs mass and rare decays [243,244] together with light exotic states, such as the Z N associated with the U (1) N broken symmetry, and the colour triplet fermions D and D, all of which can be probed at the LHC [245]. Lastly, as in the MSSM the lightest supersymmetric particle is stable, so it is a valid candidate for dark matter.…”

Section: E 6 Ssmmentioning

confidence: 99%

GUT Physics in the Era of the LHC

et al. 2019

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Grand Unified Theories (GUTs) are one of the most interesting high-energy completions of the Standard Model, because they provide a rich, powerful and elegant group-theoretical framework able to resolve a variety of problems remaining in our current understanding of particle physics. They usually act as motivators for many low energy BSM theories, such as left-right symmetric or supersymmetric models, and they serve to fill the gap between the experimentally reachable low energies and the physics in the ultraviolet. In recent years, however, they have fallen slightly from the spotlight, in favour of "simplified" models with more specific phenomenological predictions. The aim of this review is to summarize the state of the art on GUTs and argue for their importance in modern physics. Recent advances in experiments permit to test the predictions of GUTs at different energy scales. First, as GUTs can play a role in the inflationary dynamics of the early Universe, their imprints could be found in the CMB observations by the Planck satellite. Remarkably enough, GUTs could manifest themselves also in terrestrial tests; several planned experiments aim to probe the proton stability and to establish order of magnitude higher bounds on its lifetime. Moreover, the predictions of specific GUT models could be tested even at the LHC thanks to its high energy reach, via searches for exotic states or additional contributions to flavour anomalies.

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Section: E 6 Ssmmentioning

confidence: 99%

GUT Physics in the Era of the LHC

et al. 2019

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“…The exotic matter in the E 6 SSM may result in distinctive LHC signatures [21,22,59,62,91,[99][100][101][102], and can give rise to non-standard Higgs decays [55,57,86,[103][104][105][106][107][108][109]. In the E 6 SSM with approximate Z H 2 symmetry, one can also impose an exact Z S 2 symmetry, which implies that only components of the Φ α superfields are odd [63].…”

Section: Interpretation In the E 6 Ssmmentioning

confidence: 99%

TeV-scale leptoquark searches at the LHC and their E$_6$SSM Interpretation

Ali¹,

Khalil²,

Moretti³

et al. 2023

Preprint

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We perform a model-independent search for leptoquarks (LQs) at the Large Hadron Collider through their pair-production and subsequent decay into t tτ τ intermediate states. We show that, assuming full luminosity of the Run 2, a fully hadronic signal emerging from this intermediate state can surpass in sensitivity the established searches relying on leptons in the final state. Our conclusion is supported by a thorough Monte-Carlo analysis, and we advocate the deployment of our proposed search channel in the proper experimental setting of the Run 3. Furthermore, in order to highlight the full scope of this approach for constraining LQ theories, we interpret our results in the context of the string-inspired Exceptional Supersymmetric Standard Model, which naturally predicts the S 1 -type scalar LQ states that we analyse here.

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Section: Interpretation In the E 6 Ssmmentioning

confidence: 99%

TeV-scale leptoquark searches at the LHC and their E6SSM interpretation

Ali

Khalil

Moretti

et al. 2023

J. High Energ. Phys.

Self Cite

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We perform a model-independent search for leptoquarks (LQs) at the Large Hadron Collider through their pair-production and subsequent decay into $$ t\overline{t}\tau \tau $$ t t ¯ ττ intermediate states. We show that, assuming full luminosity of the Run 2, a fully hadronic signal emerging from this intermediate state can surpass in sensitivity the established searches relying on leptons in the final state. Our conclusion is supported by a thorough Monte-Carlo analysis, and we advocate the deployment of our proposed search channel in the proper experimental setting of the Run 3. Furthermore, in order to highlight the full scope of this approach for constraining LQ theories, we interpret our results in the context of the string-inspired Exceptional Supersymmetric Standard Model, which naturally predicts the S1-type scalar LQ states that we analyse here.

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Exotic Higgs Decays in U(1) Extensions of the MSSM

Abstract: Abstract. We study the decays of the lightest CP-even Higgs boson into a pair of pseudoscalar Higgs states within U (1) N extensions of the MSSM.

Cited by 8 publications

References 14 publications

GUT Physics in the Era of the LHC

GUT Physics in the Era of the LHC

TeV-scale leptoquark searches at the LHC and their E$_6$SSM Interpretation

TeV-scale leptoquark searches at the LHC and their E6SSM interpretation

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