2026-04-18T02:09:16Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1193052025-12-05T16:38:30Zcom_2072_1057col_2072_478823col_2072_478904col_2072_478917

00925njm 22002777a 4500 dc Casanova Mohr, Raimon author Garrido Beltrán, Lluís author Gascón Fora, David author Graciani Díaz, Ricardo author Graugés Pous, Eugeni author Marin Benito, Carla author Picatoste Olloqui, Eduardo author Ruiz, Hugo (Ruiz Pérez) author Badalov, Alexey author LHCb Collaboration author 2018-01-25T12:47:36Z 2018-01-25T12:47:36Z 2016-01-04 2018-01-25T12:47:36Z 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 B0 s → K0 SK∗ (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(B 0 s → K¯ 0K∗ (892)0 ) + B(B 0 s → 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 B0 → K0 SK∗ (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 Interaccions d'hadrons Col·lisions (Física) Hadron interactions Collisions (Physics) First observation of the decay B(formula presented.)at LHCb