Resumen
The first observation of the decay B̄ s 0→D 0K ×0 using pp data collected by the LHCb detector at a centre-of-mass energy of 7 TeV, corresponding to an integrated luminosity of 36 pb -1, is reported. A signal of 34.4±6.8 events is obtained and the absence of signal is rejected with a statistical significance of more than nine standard deviations. The B̄ s 0→D 0K ×0 branching fraction is measured relative to that of B̄0→D 0 ρ 0: B(B̄ s 0→D 0K ×0) B(B̄ 0→D 0ρ 0)=1.48±0 .34±0.15±0.12, where the first uncertainty is statistical, the second systematic and the third is due to the uncertainty on the ratio of the B 0 and Bs0 hadronisation fractions.
Idioma original | English |
---|---|
Páginas (desde-hasta) | 32-39 |
Número de páginas | 8 |
Publicación | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
Volumen | 706 |
N.º | 1 |
DOI | |
Estado | Published - 30 nov 2011 |
Publicado de forma externa | Sí |
All Science Journal Classification (ASJC) codes
- Física nuclear y de alta energía