TY - JOUR
T1 - First observation of the decay Bˉ0s→D0K∗0 and a measurement of the ratio of branching fractions B(Bˉ0s→D0K∗0)B(Bˉ0→D0ρ0).
AU - The LHCb Collaboration
AU - Playfer, Stephen
AU - Needham, Matthew
AU - Muheim, Franz
AU - Clarke, Peter
AU - Xie, Yuehong
AU - Eisenhardt, Stephan
PY - 2011/11/15
Y1 - 2011/11/15
N2 - The first observation of the decay Bˉ0s→D0K∗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 Bˉ0s→D0K∗0 branching fraction is measured relative to that of Bˉ0→D0ρ0: B(Bˉ0s→D0K∗0)B(Bˉ0→D0ρ0)=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 B0 and B0s hadronisation fractions.
AB - The first observation of the decay Bˉ0s→D0K∗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 Bˉ0s→D0K∗0 branching fraction is measured relative to that of Bˉ0→D0ρ0: B(Bˉ0s→D0K∗0)B(Bˉ0→D0ρ0)=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 B0 and B0s hadronisation fractions.
UR - http://www.scopus.com/inward/record.url?scp=81355161698&partnerID=8YFLogxK
U2 - 10.1016/j.physletb.2011.10.073
DO - 10.1016/j.physletb.2011.10.073
M3 - Article
SN - 1873-2445
JO - Physics Letters B
JF - Physics Letters B
ER -