A search for B (s) 0  → K S 0 K ∗(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 B s 0  → K S 0 K ∗(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 → K¯ 0K∗(892)0) + B(B0s → K0K¯ ∗(892)0)=(16.4±3.4±2.3)×10−6, where the first uncertainty is statistical and the second is systematic. No evidence is found for the decay B 0 → K S 0 K ∗(892)0 and an upper limit is set on the branching fraction, B(B0 → K¯ 0K∗(892)0) + B(B0 → K0K¯ ∗(892)0) <0.96×10−6 , at 90 % confidence level. All results are consistent with Standard Model predictions.

First observation of the decay Bs0→KS0K ∗(892)0at LHCb / Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A.A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreotti, M., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2016:1(2016), pp. 1-17. [10.1007/JHEP01(2016)012]

First observation of the decay Bs0→KS0K ∗(892)0at LHCb

Capriotti, L.;Casse, G.;Sarti, A.;Sciubba, A.;
2016

Abstract

A search for B (s) 0  → K S 0 K ∗(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 B s 0  → K S 0 K ∗(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 → K¯ 0K∗(892)0) + B(B0s → K0K¯ ∗(892)0)=(16.4±3.4±2.3)×10−6, where the first uncertainty is statistical and the second is systematic. No evidence is found for the decay B 0 → K S 0 K ∗(892)0 and an upper limit is set on the branching fraction, B(B0 → K¯ 0K∗(892)0) + B(B0 → K0K¯ ∗(892)0) <0.96×10−6 , at 90 % confidence level. All results are consistent with Standard Model predictions.
2016
Hadron-Hadron scattering B physics
01 Pubblicazione su rivista::01a Articolo in rivista
First observation of the decay Bs0→KS0K ∗(892)0at LHCb / Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A.A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreotti, M., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2016:1(2016), pp. 1-17. [10.1007/JHEP01(2016)012]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1074202
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