Hunting physics beyond the standard model with unusual W± and Z decays

Nonstandard on-shell decays of W± and Z bosons are possible within the framework of extended supersymmetric models, i.e., with singlet states and/or new couplings compared to the minimal supersymmetric standard model. These modes are typically encountered in regions of the parameter space with light...

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Autores principales: Ghosh, P., López-Fogliani, D.E., Mitsou, V.A., Muñoz, C., De Austri, R.R.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_15507998_v91_n3_p_Ghosh
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_15507998_v91_n3_p_Ghosh2023-10-03T16:25:08Z Hunting physics beyond the standard model with unusual W± and Z decays Ghosh, P. López-Fogliani, D.E. Mitsou, V.A. Muñoz, C. De Austri, R.R. Nonstandard on-shell decays of W± and Z bosons are possible within the framework of extended supersymmetric models, i.e., with singlet states and/or new couplings compared to the minimal supersymmetric standard model. These modes are typically encountered in regions of the parameter space with light singlet-like scalars, pseudoscalars, and neutralinos. In this letter we emphasize how these states can lead to novel signals at colliders from Z- or W±-boson decays with prompt or displaced multileptons/tau jets/jets/photons in the final states. These new modes would give distinct evidence of new physics even when direct searches remain unsuccessful. We discuss the possibilities of probing these new signals using the existing LHC run-I data set. We also address the same in the context of the LHC run-II, as well as for the future colliders. We exemplify our observations with the "μ from ν" supersymmetric standard model, where three generations of right-handed neutrino superfields are used to solve shortcomings of the minimal supersymmetric standard model. We also extend our discussion for other variants of supersymmetric models that can accommodate similar signatures. © 2015 American Physical Society. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_15507998_v91_n3_p_Ghosh
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description Nonstandard on-shell decays of W± and Z bosons are possible within the framework of extended supersymmetric models, i.e., with singlet states and/or new couplings compared to the minimal supersymmetric standard model. These modes are typically encountered in regions of the parameter space with light singlet-like scalars, pseudoscalars, and neutralinos. In this letter we emphasize how these states can lead to novel signals at colliders from Z- or W±-boson decays with prompt or displaced multileptons/tau jets/jets/photons in the final states. These new modes would give distinct evidence of new physics even when direct searches remain unsuccessful. We discuss the possibilities of probing these new signals using the existing LHC run-I data set. We also address the same in the context of the LHC run-II, as well as for the future colliders. We exemplify our observations with the "μ from ν" supersymmetric standard model, where three generations of right-handed neutrino superfields are used to solve shortcomings of the minimal supersymmetric standard model. We also extend our discussion for other variants of supersymmetric models that can accommodate similar signatures. © 2015 American Physical Society.
format JOUR
author Ghosh, P.
López-Fogliani, D.E.
Mitsou, V.A.
Muñoz, C.
De Austri, R.R.
spellingShingle Ghosh, P.
López-Fogliani, D.E.
Mitsou, V.A.
Muñoz, C.
De Austri, R.R.
Hunting physics beyond the standard model with unusual W± and Z decays
author_facet Ghosh, P.
López-Fogliani, D.E.
Mitsou, V.A.
Muñoz, C.
De Austri, R.R.
author_sort Ghosh, P.
title Hunting physics beyond the standard model with unusual W± and Z decays
title_short Hunting physics beyond the standard model with unusual W± and Z decays
title_full Hunting physics beyond the standard model with unusual W± and Z decays
title_fullStr Hunting physics beyond the standard model with unusual W± and Z decays
title_full_unstemmed Hunting physics beyond the standard model with unusual W± and Z decays
title_sort hunting physics beyond the standard model with unusual w± and z decays
url http://hdl.handle.net/20.500.12110/paper_15507998_v91_n3_p_Ghosh
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AT mitsouva huntingphysicsbeyondthestandardmodelwithunusualwandzdecays
AT munozc huntingphysicsbeyondthestandardmodelwithunusualwandzdecays
AT deaustrirr huntingphysicsbeyondthestandardmodelwithunusualwandzdecays
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