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Type: Journal article
Title: LHC signatures of neutral pseudo-Goldstone boson in the E₆CHM
Other Titles: LHC signatures of neutral pseudo-Goldstone boson in the E(6)CHM
Author: Nevzorov, R.
Thomas, A.
Citation: Journal of Physics G: Nuclear and Particle Physics, 2017; 44(7):075003-1-075003-21
Publisher: IOP Publishing
Issue Date: 2017
ISSN: 0954-3899
Statement of
R Nevzorov and A W Thomas
Abstract: The breakdown of the SU(6) global symmetry to its SU(5) subgroup, that contains the standard model (SM) gauge group, in the E6 inspired composite Higgs model (E6CHM) results in a set of pseudo-Nambu–Goldstone bosons (pNGBs). This set, in particular, involves the SM-like Higgs doublet and a SM singlet boson. In the limit when CP is conserved the SM singlet scalar A is a CP-odd state that does not mix with the SM-like Higgs. The interactions of A with exotic matter beyond the SM, which ensures anomaly cancellation and approximate gauge coupling unification, can induce couplings of this pseudoscalar to the SM gauge bosons. We specify the interactions of the SM singlet pNGB state with the exotic vector-like fermions, top quark and SM gauge bosons. Also we explore the dependence of the branching ratios of the pseudoscalar A and its LHC production cross section on the parameters of the E₆CHM.
Keywords: Composite Higgs models; grand unified theories; pseudo-Nambu–Goldstone boson
Description: Published 19 May 2017
Rights: © 2017 IOP Publishing Ltd
RMID: 0030071541
DOI: 10.1088/1361-6471/aa6fe1
Grant ID:
Appears in Collections:Physics publications

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