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CMS Wednesday General Meeting: WGM 193

by Camporesi Tiziano

 

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LEP II era/precision physics (1994-2004)

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LEP II era/precision physics (1994-2004)
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Gamma measurements in Bs->DsK and other tree-level decays

by Schiller Manuel Tobias

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