First observation of the decay B0s→K0SK∗(892)0

Abstract : A search for B0(s)→K0SK∗(892)0 decays is performed using pp collision data, corresponding to an integrated luminosity of 1.0 fb−1, collected with the LHCb detector at a centre-of-mass energy of 7 TeV. The B0s→K0SK∗(892)0 decay is observed for the first time, with a significance of 7.1 standard deviations. The branching fraction is measured to be B(B0s→K0SK∗(892)0)=(10.9±2.5±1.2)×10−6, where the first uncertainty is statistical and the second is systematic. No evidence is found for the decay B0→K0SK∗(892)0 and an upper limit is set on the branching fraction, B(B0→K0SK∗(892)0)<0.64 ×10−6, at 90% confidence level. All results are consistent with Standard Model predictions.
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Journal of High Energy Physics, Springer Verlag (Germany), 2016, 01 (012), 〈10.1007/JHEP01(2016)012〉
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http://hal.in2p3.fr/in2p3-01169711
Contributeur : Sabine Starita <>
Soumis le : mardi 30 juin 2015 - 09:55:22
Dernière modification le : jeudi 18 janvier 2018 - 01:56:28

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R. Aaij, Y. Amhis, S. Barsuk, M. Borsato, O. Kochebina, et al.. First observation of the decay B0s→K0SK∗(892)0. Journal of High Energy Physics, Springer Verlag (Germany), 2016, 01 (012), 〈10.1007/JHEP01(2016)012〉. 〈in2p3-01169711〉

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