Generation of baryon asymmetry in the E₆CHM
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(Published version)
Date
2018
Authors
Nevzorov, R.
Thomas, A.
Editors
Volkova, V.E.
Zhezher, Y.V.
Levkov, D.G.
Rubakov, V.A.
Matveev, V.A.
Zhezher, Y.V.
Levkov, D.G.
Rubakov, V.A.
Matveev, V.A.
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Conference paper
Citation
EPJ Web of Conferences, 2018 / Volkova, V.E., Zhezher, Y.V., Levkov, D.G., Rubakov, V.A., Matveev, V.A. (ed./s), vol.191, pp.1-8
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Roman Nevzorov and Anthony Thomas
Conference Name
XXth International Seminar on High Energy Physics (27 May 2018 - 2 Jun 2018 : Valday, Russia)
Abstract
The strongly interacting sector in the E6 inspired composite Higgs model (E6CHM) with baryon number violation possesses an SU(6) × U(1)L global symmetry. In the weakly-coupled sector of this model the U(1)L symmetry associated with lepton number conservation is broken down to a ZL2 discrete symmetry, which stabilizes the proton. Near the scale f ≳ 10 TeV the SU(6) symmetry is broken down to its SU(5) subgroup, giving rise to a set of pseudo- Nambu-Goldstone bosons (pNGBs) that involves the SM-like Higgs doublet, a scalar coloured triplet and a SM singlet boson. Because f is so high, all baryon number violating operators are sufficiently strongly suppressed. Nevertheless, in this variant of the E6CHM the observed matter-antimatter asymmetry can be induced if CP is violated. The pNGB scalar coloured triplet plays a key role in this process and leads to a distinct signature that may be detected at the LHC in the near future.
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© The Authors, published by EDP Sciences, 2018. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.