Measurement of the branching fraction of the B0→D+sπ− decay
| Parent link: | The European Physical Journal C Vol. 81, iss. 4.— 2021.— [314, 15 p.] |
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| Körperschaften: | , |
| Weitere Verfasser: | , , , , , , |
| Zusammenfassung: | Title screen A branching fraction measurement of the B0→D+sπ− decay is presented using proton-proton collision data collected with the LHCb experiment, corresponding to an integrated luminosity of 5.0fb−15.0fb−1. The branching fraction is found to be B(B0→D+sπ−)=(19.4±B(B0→Ds+π−)=(19.4± 1.8±1.3±1.2)×10−61.8±1.3±1.2)×10−6, where the first uncertainty is statistical, the second systematic and the third is due to the uncertainty on the B0→D−π+, D+s→K+K−π+Ds+→K+K−π+ and D−→K+π−π−D−→K+π−π− 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→ub→u charged-current transition, the result provides information on non-factorisable strong interaction effects and the magnitude of the Cabibbo-Kobayashi-Maskawa matrix element VubVub. Additionally, the collision energy dependence of the hadronisation-fraction ratio fs/fdfs/fd is measured through B¯s0→Ds+π− and B0→D−π+ decays. |
| Sprache: | Englisch |
| Veröffentlicht: |
2021
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| Schlagworte: | |
| Online-Zugang: | https://doi.org/10.1140/epjc/s10052-020-08790-2 |
| Format: | Elektronisch Buchkapitel |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664722 |