EPJ Web Conf.
Volume 129, 2016QCD@Work 2016 - International Workshop on Quantum Chromodynamics - Theory and Experiment
|Number of page(s)||6|
|Published online||25 November 2016|
Search for Z′, vacuum (in)stability and hints of high-energy structures
1 School of Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ, UK
2 Dipartimento di Matematica e Fisica Ennio De Giorgi, Università del Salento and INFN-Lecce, Via Arnesano 73100 Lecce, IT
3 Dept. of Particle Physics, Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, UK
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Published online: 25 November 2016
We study the high-energy behaviour of a class of anomaly-free abelian extensions of the Standard Model. We focus on the interplay among the phenomenological characterisation of the model and the use of precise renormalisation group methods. Using as boundary conditions regions of the parameter space at the verge of current LHC probe, interesting unification patterns emerge linked to thresholds belonging to a SO(10) grand unification theory (GUT). We stress how the evolution of the mixing between the two abelian factors may provide a valuable tool to address the candidate high-energy embedding. The emerging unification scenarios are then challenged to be perturbative and to allow for a stable vacuum.
© The Authors, published by EDP Sciences, 2016
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