paper

Heavy Vector Partners of the Light Composite Higgs

arXiv:1507.07102 · doi:10.1016/j.physletb.2015.12.003

Abstract

If the Higgs boson $H (125)$ is a composite due to new strong interactions at high energy, it has spin-one partners, $I ¨ _{H}$ and $a_{H}$ , analogous to the $I ¨ $ and $a_{1}$ mesons of QCD. These bosons are heavy, their mass determined by the strong interaction scale. The strongly interacting particles light enough for $I ¨ _{H}$ and $a_{H}$ to decay to are the longitudinal weak bosons $V_{L} = W_{L}, Z_{L}$ and the Higgs boson $H$ . These decay signatures are consistent with resonant diboson excesses recently reported near 2 TeV by ATLAS and CMS. We calculate $I ¨ \times B R (I ¨ _{H} \to V V) =$ few fb and $I ¨ \times B R (a_{H} \to V H) =$ 0.5-1 fb at $s =$ 8 TeV, increasing by a factor of 5-7 at 13 TeV. Other tests of the hypothesis of the strong-interaction nature of the diboson resonances are suggested.

Improved discussion of Drell-Yan production; 11 pages, 2 tables, no figures; version to appear in Physics Letters B