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http://hdl.handle.net/2445/119305
Title: | First observation of the decay B(formula presented.)at LHCb |
Author: | Casanova Mohr, Raimon Garrido Beltrán, Lluís Gascón Fora, David Graciani Díaz, Ricardo Graugés Pous, Eugeni Marin Benito, Carla Picatoste Olloqui, Eduardo Ruiz, Hugo (Ruiz Pérez) Badalov, Alexey LHCb Collaboration |
Keywords: | Interaccions d'hadrons Col·lisions (Física) Hadron interactions Collisions (Physics) |
Issue Date: | 4-Jan-2016 |
Publisher: | Springer Verlag |
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 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 |
Note: | Reproducció del document publicat a: https://doi.org/10.1007/JHEP01(2016)012 |
It is part of: | Journal of High Energy Physics, 2016, vol. 2016, num. 12 |
URI: | http://hdl.handle.net/2445/119305 |
Related resource: | https://doi.org/10.1007/JHEP01(2016)012 |
ISSN: | 1126-6708 |
Appears in Collections: | Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) Articles publicats en revistes (Física Quàntica i Astrofísica) |
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