# A new high-precision measurement of the B0 meson lifetime at the ATLAS experiment

- Institution: CERN
- Department: LHC Seminar
- Speaker: Maria Smizanska
- Year: 2024
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3016438)
- Licence: [CERN](http://copyright.web.cern.ch)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

The seminar presents a new high-precision measurement of the B0 effective lifetime in B0 to J/psi K*0 decays, using 140 fb-1 of 13 TeV pp collision data recorded by the ATLAS detector. Results for the average decay width, Gamma_d, and the width ratio Gamma_d/Gamma_s are also reported. The experimental methodologies and systematic uncertainty evaluations are described in detail and implications of the results for heavy-flavor effective theories are discussed.

Refreshments will be served at 10:30 .

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## Lectures

1. [A new high-precision measurement of the B0 meson lifetime at the ATLAS experiment](https://invisiblenetwork.ai/learn/cern/3016438/4dfacb899d51), 1 h 1 min (CERN's player)