Document type
ArticleVersion
Published versionPublication date
Publication license
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/196774
Observation of charmonium pairs produced exclusively in pp collisions
Journal Title
Director/Tutor
Journal ISSN
Volume Title
Related resource
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.
Subject (English)
Citation
Citation
LHCb Collaboration, et al. Observation of charmonium pairs produced exclusively in pp collisions. Journal of Physics G: Nuclear and Particle Physics. 2014. Vol. 41, num. 11, pags. 115002. ISSN 0954-3899. [consulted: 10 of August of 2026]. Available at: https://hdl.handle.net/2445/196774