Phenomenology of Standard Model in spontaneously broken mirror symmetry

TL;DR

This paper explores how violated mirror symmetry in the Standard Model can explain observed particle properties, neutrino behavior, and the origins of matter-antimatter asymmetry in the universe.

Contribution

It introduces a framework where violated mirror symmetry accounts for neutrino masses, mixing, CP violation, and leptogenesis, linking high-energy processes to cosmological phenomena.

Findings

Violated mirror symmetry reproduces weak mixing properties.

Neutrinos are Dirac particles with lepton number changing processes.

Conditions for leptogenesis are established within this framework.

Abstract

Violated mirror symmetry (MS) is capable of reproducing observed qualitative properties of weak mixing for quarks and leptons. In violated MS, lepton phenomenology, that is, small neutrino masses and mixing properties different from those of quarks, requires the Dirac nature of neutrinos and existence of processes that change the total lepton number. Such processes involve heavy mirror neutrinos, and therefore occur at very high energies. CP non-conservation would mean here that the parity conserving MS Lagrangian must be non-invariant to both time reversal T and (according to the CPT theorem) the charge conjugation C. All these properties create appropriate conditions for leptogenesis, a mechanism for generating baryon-lepton asymmetry of the Universe in violated MS models.