Fitxers
Tipus de document
ArticleVersió
Versió publicadaData de publicació
Llicència de publicació
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/185809
First observation and measurement of the branching fraction for the decay B {/s 0} → D {/s ∗} ∓ K ±
Títol de la revista
Director/Tutor
ISSN de la revista
Títol del volum
Recurs relacionat
Resum
The first observation of the B0 s → D∗∓ s K± decay is reported using 3.0 fb−1 of protonproton collision data collected by the LHCb experiment. The D∗∓ s mesons are reconstructed through the decay chain D∗∓ s → γD∓ s (K∓K±π ∓). The branching fraction relative to that for B0 s → D∗− s π + decays is measured to be B(B0 s→ D∗∓ s K±)/B(B0 s→ D∗− s π +) = 0.068 ± 0.005+0.003 −0.002, where the first uncertainty is statistical and the second is systematic. Using a recent measurement of B(B0 s → D∗− s π +), the absolute branching fraction of B0 s → D∗∓ s K± is measured as B(B0 s → D∗∓ s K±) = ( 16.3 ± 1.2 (stat) +0.7 −0.5 (syst) ± 4.8 (norm) ) × 10−5 , where the third uncertainty is due to the uncertainty on the branching fraction of the normalisation channel.
Matèries (anglès)
Citació
Citació
BADALOV, A., et al. First observation and measurement of the branching fraction for the decay B {/s 0} → D {/s ∗} ∓ K ±. Journal of High Energy Physics. 2015. Vol. 2015, num. 130, pags. 1-18. ISSN 1126-6708. [consulted: 24 of September of 2026]. Available at: https://hdl.handle.net/2445/185809