Observation of the decay $B_s^0\to\bar{D}^0\phi$ - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Physics Letters B Year : 2013

Observation of the decay $B_s^0\to\bar{D}^0\phi$

R. Aaij
  • Function : Author
J. He
J. Cogan
O. Leroy
J. Serrano


First observation of the decay Bs -> D0bar phi is reported using pp collision data, corresponding to an integrated luminosity of 1.0 fb^-1, collected by the LHCb experiment at a centre-of-mass energy of 7 TeV. The significance of the signal is 6.2 standard deviations. The branching fraction is measured relative to that of the decay Bs -> D0bar K*0bar to be 0.069 +/- 0.013 (stat) +/- 0.007 (syst). The first measurement of the ratio of branching fractions for the decays Bs -> D0bar K*0bar and Bd->D0bar K*0 is found to be 7.8 +/- 0.7 (stat) +/- 0.3 (syst) +/- 0.6 (f_s/f_d), where the last uncertainty is due to the ratio of the Bs and Bd fragmentation fractions.

Dates and versions

in2p3-00853213 , version 1 (22-08-2013)



R. Aaij, Y. Amhis, S. Barsuk, O. Callot, J. He, et al.. Observation of the decay $B_s^0\to\bar{D}^0\phi$. Physics Letters B, 2013, 727, pp.403-411. ⟨10.1016/j.physletb.2013.10.057⟩. ⟨in2p3-00853213⟩
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