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Alternative Z ′ bosons in E 6

Rojas, Eduardo Y Erler, Jens (2015) Alternative Z ′ bosons in E 6. Journal of High Energy Physics, 2015 (10). pp. 1-21. ISSN 1029-8479


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We classify the quantum numbers of the extra U(1)' symmetries contained in E_6 . In particular, we categorize the cases with rational charges and present the full list of models which arise from the chains of the maximal subgroups of E_6 . As an application, the classification allows us to determine all embeddings of the Standard Model fermions in all possible decompositions of the fundamental representation of E_6 under its maximal subgroups. From this we find alternative chains of subgroups for Grand Unified Theories. We show how many of the known models including some new ones appear in alternative breaking patterns. We also use low energy constraints coming from parity-violating asymmetry measurements and atomic parity non-conservation to set limits on the E 6 motivated parameter space for a Z' boson mass of 1.2 TeV. We include projected limits for the present and upcoming QWEAK, MOLLER and SOLID experiments.

Tipo de Elemento: Artículo
Asunto: Q Ciencias > QC Physics
Division: Facultad de Ciencias Exactas y Naturales > Programa de Física > Productividad
Depósito de Usuario: Prof. Eduardo Rojas
Fecha Deposito: 26 Sep 2018 13:51
Ultima Modificación: 26 Sep 2018 13:51

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