# RooStats: Statistical Tools for the LHC

- Institution: CERN
- Department: Conferences
- Speaker: Sven Kreiss
- Year: 2012
- Language: English
- Subjects: Physics, Computer science, Earth and environment
- Source: [CERN](https://videos.cern.ch/record/3009758)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Tweens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

RooStats is a project providing advanced statistical tools required for the analysis of LHC data, with emphasis on discoveries, confidence intervals, and combined measurements in the both the Bayesian and Frequentist approaches. The tools are built on top of the RooFit data modeling language and core ROOT mathematics libraries and persistence technology. These tools have been developed in collaboration with the LHC experiments and used by them to produce numerous physics results, such as the combination of ATLAS and CMS Higgs searches that resulted in a model with more than 200 parameters. We will review new developments which have been included in RooStats and the performance optimizations, required to cope with such complex models used by the LHC experiments. We will show as well the parallelization capability of these statistical tools using multiple-processors via PROOF..

0:00:00 Slide 1

0:01:12 Slide 2

0:02:24 Slide 3

0:04:47 Slide 4

0:07:10 Slide 5

0:09:33 Slide 6

0:11:57 Slide 7

0:14:20 Slide 8

0:16:43 Slide 9

0:19:06 Slide 10

0:21:29 Slide 11

## Lectures

1. [RooStats: Statistical Tools for the LHC](https://invisiblenetwork.ai/learn/cern/3009758/14f214697100), 24 min (CERN's player)