Schwinger-Dyson approach and its application to generate a light composite scalar
arXiv:1601.04024 · doi:10.1142/S0217751X1650024X
Abstract
We discuss the possibility of generating a light composite scalar boson, in a scenario that we may generically call Technicolor, or in any variation of a strongly interacting theory, where by light we mean a scalar composite mass about one order of magnitude below the characteristic scale of the strong theory. Instead of most of the studies about a composite Higgs boson, which are based on effective Lagrangians, we consider this problem in the framework of non-perturbative solutions of the fermionic Schwinger-Dyson and Bethe-Salpeter equations. We study a range of mechanisms proposed during the recent years to form such light composite boson, and verify that such possibility seems to be necessarily associated to a fermionic self-energy that decreases slowly with the momentum.
35 pages, 6 figures, few typos corrected. Version to appear in IJMPA
References in corpus (10)
- Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
- Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
- Combined Measurement of the Higgs Boson Mass in Collisions at and 8 TeV with the ATLAS and CMS Experiments
- Supersymmetry Inspired QCD Beta Function
- A lattice study of the masses of singlet 0++ mesons
- sigma and f_0(980) substructures from gamma-gamma to pi-pi, J/psi, phi radiative and D_s semi-leptonic decays
- Light composite Higgs from an effective action for technicolor
- Light composite Higgs boson from the normalized Bethe-Salpeter equation
- A Composite Higgs Model with Minimal Fine-Tuning I.~The Large-N and Weak-technicolor Limit
- Limit on the fermion masses in technicolor models