Tau identification performance measurements in data

Structured Offline Guide common to all pages in this guide

Contacts

• Conveners: Sébastien Greder
• Hypernews forum: https://hypernews.cern.ch/HyperNews/CMS/get/xxx.html

Introduction

This task force is aimed at providing and optimizing measurement of tau identification efficiencies in real data. As the identification path consists of several steps including triggering, cuts and selection, it can split down into different topics such as:

• energy response/resolution
• isolation cuts (charged/neutral)
• jet shapes ( energy dependant)
• distinction of low/high-pT regimes
• trigger
• conversions
• ...

Optimization procedures (esp. isolations) should involve a luminosity dependence approach

Tutorials

Algorithms and Software Architecture

Analysis and Validation

• Measurement of tau-identification efficiency from Z->ee/Z->etau events. K. Petridis and S. Greder. Based on CMS NOTE 2006/074
• Measurement of tau-identification efficiency from Z->ee/Z->mutau events. ????? ( needs urgently someone)

To-do

Meetings

• Tau plans
• Tau Coffee meeting 2007-30-08

Documents

(see also presentations in Meetings section)

CMS Notes:

• CMS NOTE 2006/074, "Measurement of the τ tag efficiency using the Z → τ τ → µ + hadrons + X events"

Other

• D0, "Measurement of sigma.Br(Z→ τ τ) at D0" and D0 NOTE 4550
• CDF, "Measurement of sigma(ppbar)-->Z)·Br(Z→ τ τ) in ppbar collisions at sqrt(s)=1.96 TeV", Phys. Rev. D 75, 092004 (2007)

Subgroups/Activities

Related Topics

Review status

Responsible: SebastienGreder
Last reviewed by: SebastienGreder - 06 Sep 2007