期刊
EUROPEAN PHYSICAL JOURNAL C
卷 81, 期 4, 页码 -出版社
SPRINGER
DOI: 10.1140/epjc/s10052-020-08790-2
关键词
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资金
- CERN
- CAPES (Brazil)
- CNPq (Brazil)
- FAPERJ (Brazil)
- FINEP (Brazil)
- MOST (China)
- NSFC (China)
- CNRS/IN2P3 (France)
- BMBF (Germany)
- DFG (Germany)
- MPG (Germany)
- INFN (Italy)
- NWO (Netherlands)
- MNiSW (Poland)
- NCN (Poland)
- MEN/IFA (Romania)
- MSHE (Russia)
- MICINN (Spain)
- SNSF (Switzerland)
- SER (Switzerland)
- NASU (Ukraine)
- STFC (United Kingdom)
- DOE NP (USA)
- NSF (USA)
- AvH Foundation (Germany)
- ERC (European Union)
- RFBR (Russia)
- RSF (Russia)
- Yandex LLC (Russia)
- GVA (Spain)
- XuntaGal (Spain)
- GENCAT (Spain)
- Royal Society (United Kingdom)
- Leverhulme Trust (United Kingdom)
- EPLANET (European Union)
- Marie Sklodowska-Curie Actions (European Union)
- Key Research Program of Frontier Sciences of CAS (China)
- CAS PIFI (China)
- Thousand Talents Program (China)
- Sci. & Tech. Program of Guangzhou (China)
- Science and Technology Facilities Council [ST/S000879/1] Funding Source: researchfish
Using data from proton-proton collisions with an integrated luminosity of 5.0fb-1, the branching fraction of the B0 -> Ds+pi- decay was measured to be (19.4 +/- 1.8 +/- 1.3 +/- 1.2)x10-6, providing important information on non-factorizable strong interaction effects and the Cabibbo-Kobayashi-Maskawa matrix element Vub. Additionally, the collision energy dependence of the hadronisation-fraction ratio fs/fd was also determined through Bs0 -> Ds+pi- and B0 -> D-pi + decays.
A branching fraction measurement of the B0 -> Ds+pi- decay is presented using proton-proton collision data collected with the LHCb experiment, corresponding to an integrated luminosity of 5.0fb-1. The branching fraction is found to be B(B0 -> Ds+pi-)=(19.4 +/- 1.8 +/- 1.3 +/- 1.2)x10-6, where the first uncertainty is statistical, the second systematic and the third is due to the uncertainty on the B0 -> D-pi+, Ds+-> K+K-pi+ and D--> K+pi-pi- branching fractions. This is the most precise single measurement of this quantity to date. As this decay proceeds through a single amplitude involving a b -> u charged-current transition, the result provides information on non-factorisable strong interaction effects and the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element Vub. Additionally, the collision energy dependence of the hadronisation-fraction ratio fs/fd is measured through Bs0 -> Ds+pi- and B0 -> D-pi + decays.
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