Abstract
We report the first direct measurement of the inclusive branching fraction B(Bs→DsX) via Bs tagging in e+e-→ (5S) events. Tagging is accomplished through a partial reconstruction of semileptonic decays Bs→DsXℓν, where X denotes unreconstructed additional hadrons or photons and ℓ is an electron or muon. With 121.4 fb-1 of data collected at the (5S) resonance by the Belle detector at the KEKB asymmetric-energy e+e- collider, we obtain B(Bs→DsX)=(60.2±5.8±2.3)%, where the first uncertainty is statistical and the second is systematic.
| Original language | English |
|---|---|
| Article number | 012004 |
| Journal | Physical Review D |
| Volume | 105 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2022 Jan 1 |
Bibliographical note
Publisher Copyright:© 2022 authors. Published by the American Physical Society.
ASJC Scopus subject areas
- Nuclear and High Energy Physics
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