Performances of the Higgs decay to 4 muons analysis with the CMS Phase II detector upgrade

Link to the CMS PAS FTR-13-003 on the CERN document server.

Abstract

The performances of the Higgs to 4 muons analysis are studied in the context of the Compact Muon Solenoid (CMS) detector Phase II upgrade for the HL-LHC. Studies are performed with simulated H to ZZ* to 4 muon events, produced in proton-proton collision samples at sqrt(s)=14 TeV with up to 140 overlapping collisions per event. These samples were reconstructed with a CMS Phase II detector using the Delphes simulation framework.

Results

The effects of two possible Phase II detector configurations on the H to ZZ* to 4 muons analysis have been studied. The configuration 4 detector, with an extended tracking, calorimetry and muon detector acceptance up to a pseudorapidity value of eta=4.0, provides a relative selection efficiency increase of more than 40%. This result is even more impressive, since it was obtained despite the much larger pileup value of 140 events, expected at HL-LHC.

Figure/Table	Links	Description
	png	Figure 4: The cut flow table for the full analysis chain for the signal sample H to ZZ to 4muons.
	png	Figure 6: Four muon mass distributions obtained with 3000 fb-1 for the signal sample, H to ZZ to 4muons, and for the irreducible ZZ to 4muons background.
	png	Figure 7: Four muon mass distribution obtained with 3000 fb-1 for the signal sample, H to ZZ to 4muons.