# Gamma measurements in Bs->DsK and other tree-level decays

- Institution: CERN
- Department: LHC Seminar
- Speaker: Manuel Tobias Schiller
- Year: 2014
- Language: English
- Source: [CERN](https://videos.cern.ch/record/3006680)
- 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 angle gamma is the least constrained parameter in the CKM unitarity triangle. Its determination in decays induced by tree-level b -> u transitions is largely unaffected by potential new physics contributions. This allows for a consistency check of the unitarity triangle, but also of comparisons with gamma determinations from modes with loop-diagrams. We present here a new precise determination of gamma using a time-dependent flavour-tagged analysis of Bs -> Ds K decays with the LHCb experiment. New developments in flavour tagging are presented. .

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## Lectures

1. [Gamma measurements in Bs->DsK and other tree-level decays](https://invisiblenetwork.ai/learn/cern/3006680/5ca0c8502116), 54 min (CERN's player)