Search for scalar resonances in the 200500 CMS.GeV mass range decaying into a Z and a photon in pp collisions at √s=8 CMS.TeV

This is the CDS entry for the analysis: HIG-14-031

Abstract

A search for a high mass scalar particle decaying into a Z boson and a photon is described. The analysis is performed using proton-proton collision datasets recorded by the CMS detector at the LHC. Events were collected at center-of-mass energies of 8 CMS.TeV, corresponding to integrated luminosities of 19.7 fb-1. The selected events are required to have opposite-sign electron or muon pairs. No excess of events above standard model predictions has been found in the 200500 CMS.GeV mass range and limits at 95% confidence level have been derived on the scalar boson production cross section times the A → Zγ → llγ branching fraction. The observed limits are between 0.2 and 1.4 fb.

PAS Figures:

Figure Label Description
PAS_fit_02-11-15_HighMass800_8TeV_mu_cat0_v4.png png pdf Figure 1a: The mμμγ distribution from data, compared to the background model fit, for the muon channel. The statistical uncertainty bands shown are computed from a fit to data.
PAS_fit_02-11-15_HighMass800_8TeV_el_cat0_v4.png png pdf Figure 1b: The meeγ distribution from data, compared to the background model fit, for the electron channel. The statistical uncertainty bands shown are computed from a fit to data.
limitPlot_FullCombo_02-11-15_HighMass800_YR3_DCB_v4.png png pdf Figure 2a: Exclusion limits at 95% confidence level on the cross section times branching ratio for A→Zγ→llγ using the broad resonance signal model.
limitPlot_FullCombo_02-11-15_HighMassNarrow800_YR3_CBG_v4.png png pdf Figure 2b: Exclusion limits at 95% confidence level on the cross section times branching ratio for A→Zγ→llγ using the narrow resonance signal model.
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Topic revision: r2 - 2015-03-17 - GuillelmoCeballos
 
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