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Higgs candidate events from CMS 2011 and 2012 open data release selected in the Higgs-to-four-lepton analysis example

McCauley, Thomas

Cite as: McCauley, Thomas; (2019). Higgs candidate events from CMS 2011 and 2012 open data release selected in the Higgs-to-four-lepton analysis example. CERN Open Data Portal. DOI:10.7483/OPENDATA.CMS.YGG7.333M

Dataset Derived Education CMS CERN-LHC


Description

This document contains Higgs candidate events that pass the selections found in the example Higgs-to-four-lepton analysis example as part of the public release of CMS 2011 and 2012 data.

These data were selected for use in education and outreach and contain a subset of the total event information. They are not suitable for a full physics analysis.

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iSpy-WebGL

A browser-based event display for the CMS experiment at the LHC using WebGL

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Contributors: L. Barnard, M. Hategan, C. Logren, T. McCauley, P. Nguyen, M. Saunby

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Files

Detector

Tracker:
Silicon and pixel detectors used to detect passage of charged particles
ECAL Barrel:
Central electromagnetic calorimeter; measures energy of electrons and photons
ECAL Endcap:
Electromagnetic calorimeters at either end of CMS for measurements close to the beam axis
HCAL Barrel:
Central hadronic calorimeter; measures energy of hadrons
HCAL Endcap:
Hadronic calorimeters at either end of CMS, close to the beam axis
HCAL Outer:
Hadronic calorimeter layer just outside the solenoid magnet
HCAL Forward:
Hadronic calorimeters farther down and very close to the beam axis
Drift Tubes (DT):
Central muon chambers outside the solenoid and HCAL Outer
Cathode Strip Chambers (CSC):
Forward muon detectors
Resistive Place Chambers (RPC):
Solid state muon detectors

Want to know more? Go here.

Imported

Imported geometry models such the beam pipe.

Provenance

Event:
Each event is distinguished by a run number, event number, luminosity section, and time stamp

Tracking

Tracks (reco.):
Reconstructed particle tracks in the tracker
Rec. Hits (Tracking):
All particle hits in the tracker

ECAL: Electromagnetic calorimeter

Barrel Rec. Hits:
Energy in a single ECAL crystal
Endcap Rec. Hits:
Hits in ECAL Endcap
Preshower Rec. Hits:
Hits in ECAL Preshower

HCAL: Hadronic calorimeter

Barrel Rec. Hits:
Energy in a single HCAL tile
Endcap Rec. Hits:
Hits in HCAL Endcap
Forward Rec. Hits:
Hits in HCAL Forward
Outer Rec. Hits:
Hits in HCAL Outer

Muon

Matching muon chambers:
The muon chambers (drift tubes and/or cathode strip chambers) that correspond to the reconstructed muon
DT Rec. Hits:
Muon hits in Drift Tubes
DT Rec. Segments:
Muon track segments in Drift Tubes
CSC Segments:
Muon track segments in Cathode Strip Chambers
RPC Rec. Hits:
Muon hits in Resistive Plate Chambers
CSC Rec. Hits:
Muon hits in Cathode Strip Chambers

Physics Objects

Electron Tracks (GSF):
Reconstructed candidate electron tracks in the tracker
Photons (Reco):
Inferred photon trajectories
Tracker Muons (Reco):
Reconstructed muon tracks in tracker
Stand-alone Muons (Reco):
Reconstructed muon track segments in muon chambers
Global Muons (Reco):
Reconstructed complete muon tracks, combining tracker and stand-alone muons
Jets:
Collimated streams of particles
MET:
Missing transverse energy

Type Value

Invariant mass

GeV

Dataset characteristics

11 files. 28.8 MB in total.

How were these data selected?

These events were selected in the example Higgs-to-four-lepton analysis of CMS public data.

How were these data validated?

These events were selected in the example Higgs-to-four-lepton analysis of CMS public data.

How can you use these data?

Files with the extension .ig are JSON files containing information suitable for visual display. The data can be accessed from the file menu of the online event display. Comma-separated value (csv) files can be used in online applications such as the histogram visualizer and other applications, examples are given in

Jupyter notebooks using CMS Open Data

Instructions for use of CMS Open Data in R

Instructions for use of CMS Open Data in spreadsheets

Higgs-to-four-lepton analysis example using 2011-2012 data

File Indexes

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Files

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Disclaimer

The open data are released under the Creative Commons CC0 waiver. Neither CMS nor CERN endorse any works, scientific or otherwise, produced using these data. All releases will have a unique DOI that you are requested to cite in any applications or publications.

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