On the structure of the new particle at 126 GeV (Higgs- or not Higgs-boson?)

Abstract

A new particle - discovered recently with the Atlas and CMS detectors at LHC - has been interpreted as the long sought Higgs-boson. A corresponding scalar field is needed to make the weak interaction gauge invariant and to understand the quark masses in the Standard Model. However, the Standard Model is an effective theory with quark masses, which can be understood only in a fundamental theory. Such a theory has been constructed, based on a generalised second order extension of QED, in which the quarks can be understood as effective fermions with masses given by binding energies in a boson-exchange potential. In the present approach the Higgs-mechanism is not needed. In this framework a good understanding of particles in the "top" regime is obtained. Two J^\pi=1^- q-qbar states are predicted, identified with Z(91.2 GeV) and the t-tbar state at about 350 GeV. Further, two 0^+ q-qbar states are obtained, one with a mass consistent with that of the new particle, the other with a mass of about 41 GeV. A detection of the second scalar state will serve as a crucial test of the present model.