W to muon and neutrino 2011

Description

This document contains 100k events where one muon candidate was observed and missing energy implies to the presence of a neutrino. The data was selected from the primary dataset SingleMu 2011. 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.

Related datasets

This data file and other similar data files can be found from

Datasets derived from the Run2011A SingleElectron, SingleMu, DoubleElectron, and DoubleMu primary datasets

Dataset characteristics

100000 events.

Dataset semantics

Variable	Type	Description
Run	The run number of the event.
Event	The event number.
pt	The transverse momentum of the muon (GeV).
eta	The pseudorapidity of the muon.
phi	The phi angle of the muon (rad).
Q	The charge of the muon.
chiSq	The chi-squared per degree-of-freedom of the muon.
dxy	The impact parameter in the transverse plane with respect to the vertex of the muon.
iso	The combined isolation (Itrack + Iecal + Ihcal) of the muon.
MET	The missing transverse momentum of the event (GeV).
phiMET	The phi angle of the missing transverse momentum (rad).

How were these data selected?

An event was selected if there was one (and only one) global muon in the event that satisfies: pT > 25.0 GeV and |eta| < 2.1. Furthermore, the event was rejected if there was another global muon in the event with pT > 10 GeV in the acceptance region |eta| < 2.4.

How can you use these data?

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

Files and indexes