Six-lepton Z' resonance at the Large Hadron Collider.
New physics models admit the interesting possibility of a Z' weak boson associated with an extra U(1) gauge symmetry and a Higgs boson that is heavy enough to decay into a pair of Z bosons. Then Z' production and decay via Z' --> ZH --> ZZZ has a distinctive LHC signal that is nearly background-free and reconstructs the H and Z' masses and widths. The Z' decay to 3 pairs of leptons is especially distinctive. The ZH decay mode exists even if the Z' is decoupled from leptons, which motivates an independent 6-lepton resonance search regardless of the dilepton search results.
Barger
Vernon
V
Department of Physics, University of Wisconsin, Madison, Wisconsin 53706, USA.
Langacker
Paul
P
Lee
Hye-Sung
HS