We present a possible interpretation of the recent diphoton excess reported by the s=13 TeV LHC data in quark seesaw left-right models with vectorlike fermions proposed to solve the strong CP problem without the axion. The gauge singlet real scalar field responsible for the mass of the vectorlike fermions has the right production cross section and diphoton branching ratio to be identifiable with the reported excess at around 750 GeV diphoton invariant mass. Various ways to test this hypothesis as more data accumulates at the LHC are proposed.
@article{arxiv.1512.08507,
title = {Quark Seesaw, Vectorlike Fermions and Diphoton Excess},
author = {P. S. Bhupal Dev and Rabindra N. Mohapatra and Yongchao Zhang},
journal= {arXiv preprint arXiv:1512.08507},
year = {2016}
}
Comments
18 pages, 6 figures, 1 table; section on high-scale validity and some discussions and references added, version to appear in JHEP