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The breakdown of the SU(6) global symmetry to its SU(5) subgroup, thatcontains the standard model (SM) gauge group, in the E6 inspired compositeHiggs 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 singletboson. In the limit when CP is conserved the SM singlet scalar A is a CP-oddstate that does not mix with the SM-like Higgs. The interactions of A withexotic matter beyond the SM, which ensures anomaly cancellation and approximategauge coupling unification, can induce couplings of this pseudoscalar to the SMgauge bosons. We specify the interactions of the SM singlet pNGB state with theexotic vector-like fermions, top quark and SM gauge bosons. Also we explore thedependence of the branching ratios of the pseudoscalar A and its LHC productioncross section on the parameters of the E6CHM.

LHC signatures of neutral pseudo-Goldstone boson in the E6CHM