We investigate the sensitivity of Asymmetry Observables constructed from top pair decay products, specifically in the semileptonic channel, to an underlying Z′ boson arising from U(1) gauge extensions to the Standard Model. We include full tree-level Standard Model background eﬀects and interference. We also account for appropriate experimental cuts and realistic reconstruction eﬃciencies for the partonic ﬁnal state decay products, including quark-assignment, and reconstruction of the neutrino momentum. We demonstrate that combinations of spin and charge asymmetries can enable one to distinguish between a selection of benchmark Z′ models, owing to their unique dependencies on chiral couplings to the new gauge boson.
Thursday, November 5, 2015 - 13:00
Building 46, seminar room (5th floor)
Searching for and profiling new neutral bosons in top pair production at the LHC