Left-right asymmetry and 750 GeV diphoton excess

Understand

We propose the left-right models based on SU(3)_C\otimes SU(M)_L \otimes SU(N)_R \otimes U(1)_X gauge symmetry for (M,N)=(3,3), (2,3), and (3,2) that address the 750 GeV diphoton excess recently reported by the LHC.

• The fermion contents are minimally introduced, and the generation number must match the fundamental color number to cancel anomalies and ensure QCD asymptotic freedom.
• The diphoton excess arises from the field that breaks the left-right symmetry spontaneously in the first model, while for the last models it emerges as an explicit violation of the left-right symmetry.
• The neutrino masses, flavor-changing neutral currents, and new boson searches are also discussed.