Resolving an ambiguity of Higgs couplings in the FSM, greatly improving thereby the model’s predictive range and prospects

Abstract

We show that, after resolving what was thought to be an ambiguity in the Higgs coupling, the FSM gives, apart from two extra terms (i) and (ii) to be specified below, an effective action in the standard sector which has the same form as the SM action, the two differing only in the values of the mass and mixing parameters of quarks and leptons which the SM takes as Γinputs from experiment while the FSM obtains as a result of a fit with a few parameters. Hence, to the accuracy that these two sets of parameters agree in value, and they do to a good extent as shown in earlier work, 1 the FSM should give the same result as the SM in all the circumstances where the latter has been successfully applied, except for the noted modifications due to (i) and (ii). If so, it would be a big step forward for the FSM. The correction terms are: (i) a mixing between the SM’s [Formula: see text] with a new vector boson in the hidden sector, (ii) a mixing between the standard Higgs with a new scalar boson also in the hidden sector. And these have been shown a few years back to lead to (i[Formula: see text]) an enhancement of the W mass over the SM value, 2 and (ii[Formula: see text]) effects consistent with the [Formula: see text] and some other anomalies, 3 precisely the two deviations from the SM reported by experiments 4 , 5 recently much in the news.