Efficiency Studies using the Tag and Probe Method

What is this lesson about?

Welcome. In this lesson you will:

• Learn what Tag & Probe method is.
• Plotting efficiency distributions for several variables using the Tag & Probe Method with data from ϒ (Upsilon) resonance decays to dimuons.
• Learn two methods for performing signal extraction from a given dataset.
• Learn how to use two efficiency measurement tools.

Prerequisites

In order to complete this lesson you need

• ROOT CERN 6.16 or later installed. You can set up ROOT as recommended here.
• Internet connection.
• A basic understanding of terminal commands.

Helpline

Authors: Allan Jales (Rio de Janeiro State University - UERJ/Brazil) and Thomas Gaehtgens (Instituto Superior Técnico - IST/Lisbon)

Advisors: Eliza Melo (UERJ/Brazil), Nuno Leonardo (LIP/Lisbon) and Sandro Fonseca (UERJ/Brazil)

Data used

The data used in this lesson was derived (already pre-processed with tools similar to the ones you have been learning about) from these CMS Open Data datasets:

• Collisions data (2011 legacy)
• Monte Carlo simulations