%0 Journal Article
%T First observation of the decay $\bar{B}^0_s \to D^0 K^{*0}$ and a measurement of the ratio of branching fractions $\frac{{\cal B}(\bar{B}^0_s \to D^0 K^{*0})}{{\cal B}(\bar{B}^0 \to D^0 \rho^0)}$
%+ Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE)
%+ Laboratoire d'Annecy de Physique des Particules (LAPP)
%+ Centre de Calcul de l'IN2P3 (CC-IN2P3)
%+ Laboratoire de Physique Corpusculaire - Clermont-Ferrand (LPC)
%+ Laboratoire de l'Accélérateur Linéaire (LAL)
%+ Centre de Physique des Particules de Marseille (CPPM)
%A Aaij, R.
%A Ben-Haim, E.
%A Benayoun, M.
%A David, P.
%A del Buono, L.
%A Ghez, Ph.
%A Hopchev, P.
%A Lees, J.-P.
%A Machikhiliyan, I.V.
%A Minard, M.-N.
%A Pietrzyk, B.
%A t'Jampens, S.
%A Tisserand, V.
%A Arrabito, L.
%A Ajaltouni, Ziad, Zj
%A Deschamps, O.
%A Henrard, Pierre
%A Jahjah-Hussein, Marwa
%A Lefèvre, R.
%A Li Gioi, L.
%A Monteil, S.
%A Niess, V.
%A Perret, Pascal
%A Roa Romero, Diego Alejandro
%A Sobczak, Krzysztof Grzegorz
%A Barsuk, S.
%A Callot, O.
%A d'Almagne, B.
%A He, J.
%A Jean-Marie, B.
%A Lefrançois, J.
%A Machefert, F.
%A Martin Sanchez, A.
%A Nicol, M.
%A Robbe, P.
%A Schune, M.-H.
%A Viaud, B.
%A Videau, I.
%A Adrover, C.
%A Aslanides, E.
%A Cogan, J.
%A Khanji, B.
%A Le Gac, R.
%A Leroy, O.
%A Mancinelli, G.
%A Maurice, E.
%A Perrin-Terrin, M.
%A Sapunov, M.
%A Serrano, J.
%A Tsaregorodtsev, A.
%A de Bonis, Isabelle
%Z 10 pages, 3 figures, submitted to Phys. Lett. B (See paper for full list of authors)
%< avec comité de lecture
%Z LHCb-PAPER-2011-008 CERN-PH-EP-2011-150
%@ 0370-2693
%J Physics Letters B
%I Elsevier
%V 706
%P 32-39
%8 2011
%D 2011
%Z 1110.3676
%R 10.1016/j.physletb.2011.10.073
%Z Physics [physics]/High Energy Physics - Experiment [hep-ex]Journal articles
%X The first observation of the decay $\bar{B}^0_s \to D^0 K^{*0}$ 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 $34.4 \pm 6.8$ events is obtained and the absence of signal is rejected with a statistical significance of more than nine standard deviations. The $\bar{B}^0_s \to D^0 K^{*0}$ branching fraction is measured relative to that of $\bar{B}^0 \to D^0 \rho^0$: $\frac{{\cal B}(\bar{B}^0_s \to D^0 K^{*0})}{{\cal B}(\bar{B}^0 \to D^0 \rho^0)} = 1.48 \pm 0.34 \pm 0.15 \pm 0.12$, 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 $B^0_s$ hadronisation fractions.
%G English
%Z LHCb
%2 https://hal.in2p3.fr/in2p3-00637871/document
%2 https://hal.in2p3.fr/in2p3-00637871/file/1-s2.0-S0370269311013396-main.pdf
%L in2p3-00637871
%U https://hal.in2p3.fr/in2p3-00637871
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