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http://hdl.handle.net/2445/196774
Title: | Observation of charmonium pairs produced exclusively in pp collisions |
Author: | LHCb Collaboration Graciani Díaz, Ricardo Graugés Pous, Eugeni Marin Benito, Carla Picatoste Olloqui, Eduardo Rives Molina, Vicente José Ruiz, Hugo (Ruiz Pérez) |
Keywords: | Física de partícules Experiments Cromodinàmica quàntica Difracció Particle physics Experiments Quantum chromodynamics Diffraction |
Issue Date: | Nov-2014 |
Publisher: | Institute of Physics (IOP) |
Abstract: | The CP-violating asymmetry a s sl is studied using semileptonic decays of B0 s and B0 s mesons produced in pp collisions at a centre-of-mass energy of 7 TeV at the LHC, exploiting a data sample corresponding to an integrated luminosity of 1.0 fb−1 . The reconstructed final states are D± s µ ∓, with the D± s particle decaying in the φπ± mode. The D± s µ ∓ yields are summed over B0 s and B0 s initial states, and integrated with respect to decay time. Data-driven methods are used to measure efficiency ratios. We obtain a s sl = (−0.06 ± 0.50 ± 0.36)%, where the first uncertainty is statistical and the second systematic. |
Note: | Reproducció del document publicat a: https://doi.org/10.1088/0954-3899/41/11/115002 |
It is part of: | Journal of Physics G: Nuclear and Particle Physics, 2014, vol. 41, num. 11, p. 115002 |
URI: | http://hdl.handle.net/2445/196774 |
Related resource: | https://doi.org/10.1088/0954-3899/41/11/115002 |
ISSN: | 0954-3899 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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