https://doi.org/10.1140/epjc/s10052-019-6858-5
Regular Article - Experimental Physics
Exclusion of heavy, broad resonances from precise measurements of WZ and VH final states at the LHC
1
Department of Physics, National Taiwan University, No 1, Sec 4, Roosevelt Road, Taipei, 10617, Taiwan
2
IRFU, CEA, Universite Paris-Saclay, Gif-sur-Yvette, France
* e-mail: stathes.paganis@cern.ch
Received:
8
October
2018
Accepted:
6
April
2019
Published online:
17
April
2019
A novel search for heavy vector resonances in the and
final states in association with a leptonically decaying V (Z or W) and W-only respectively, is proposed. It is argued that excesses with respect to the Standard Model prediction should be observed in all final states (0, 1 or 2 leptons), with the 1-lepton final state being the strongest. Since the relative strengths of these excesses depend on branching ratios and efficiencies, this is a clear signal for the presence of heavy resonances or their low mass tails. A general vector-triplet model is used to explore the discovery potential as a function of the resonance mass and width. Recent Higgs to
observation data reported by the experiments ATLAS and CMS are used to test the model. Current limits are extended to resonance widths over mass as large as 9%.
© The Author(s), 2019