Jul 4 – 11, 2018
COEX, SEOUL
Asia/Seoul timezone

Measurement of Bs and Y(5S) Decays with Belle

Jul 5, 2018, 2:00 PM
20m
101 (COEX, Seoul)

101

COEX, Seoul

Parallel Strong Interactions and Hadron Physics Strong Interactions and Hadron Physics

Speaker

Leo Piilonen (Virginia Tech)

Description

The branching fraction of the decay Bs → Ds X has been measured by Belle and other experiments, but with indirect methods which have model-dependent limitations. We report a direct measurement of this decay by tagging one Bs from Y(5S) with semi-leptonic decay (Bs → Ds l nu), where several Ds decay modes are combined to increase the total statics. We also report a search for eta and eta' transitions from Y(5S) resonance to the lower bottomonia. These results are based on data sample of 121 /fb collected at the Y(5S) resonance by the Belle detector at the KEKB asymmetric-energy e+ e- collider. Other analyses on Bs and Y(5S) decays are also covered in this talk.

Primary authors

Shohei Nishida (KEK) Leo Piilonen (Virginia Tech)

Presentation materials