# Observation of B0s→D¯0K0S and evidence for B0s→D¯∗0K0S decays

Abstract : The first observation of the B0s→D¯0K0S decay mode and evidence for the B0s→D¯∗0K0S decay mode are reported. The data sample corresponds to an integrated luminosity of 3.0 fb−1 collected in pp collisions by LHCb at center-of-mass energies of 7 and 8 TeV. The branching fractions are measured to be B(B0s→D¯0K¯0)B(B0s→D¯∗0K¯0)=(4.3±0.5(stat)±0.3(syst)±0.3(frag)±0.6(norm))×10−4,=(2.8±1.0(stat)±0.3(syst)±0.2(frag)±0.4(norm))×10−4, where the uncertainties are due to contributions coming from statistical precision, systematic effects, and the precision of two external inputs, the ratio fs/fd and the branching fraction of B0→D¯0K0S, which is used as a calibration channel.
Document type :
Journal articles

http://hal.in2p3.fr/in2p3-01288903
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Submitted on : Tuesday, March 15, 2016 - 4:59:58 PM
Last modification on : Thursday, December 16, 2021 - 2:11:24 PM

### Citation

R. Aaij, L. Beaucourt, M. Chefdeville, D. Decamp, N. Déléage, et al.. Observation of B0s→D¯0K0S and evidence for B0s→D¯∗0K0S decays. Physical Review Letters, American Physical Society, 2016, 116, pp.161802 ⟨10.1103/PhysRevLett.116.161802⟩. ⟨in2p3-01288903⟩

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