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Title: | Measurement of CP asymmetries in D± → η‧π± and Ds± →η‧π± decays |
Author: | Camboni, Alessandro Coquereau, Samuel Garrido Beltrán, Lluís Gascón Fora, David Graciani Díaz, Ricardo Graugés Pous, Eugeni Marin Benito, Carla Picatoste Olloqui, Eduardo Rives Molina, Vicente José LHCb Collaboration |
Keywords: | Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Hadrons Large Hadron Collider (France and Switzerland) Particle physics Experiments |
Issue Date: | Aug-2017 |
Publisher: | Elsevier B.V. |
Abstract: | A search for CP violation in D± →η‧π± and Ds± →η‧π± decays is performed using proton-proton collision data, corresponding to an integrated luminosity of 3 fb-1, recorded by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The measured CP-violating charge asymmetries are ACP (D± →η‧π±) = (- 0.61 ± 0.72 ± 0.53 ± 0.12)% and ACP (Ds± →η‧π±) = (- 0.82 ± 0.36 ± 0.22 ± 0.27)%, where the first uncertainties are statistical, the second systematic, and the third are the uncertainties on the ACP (D± →KS0 π±) and ACP (Ds± → ϕπ±) measurements used for calibration. The results represent the most precise measurements of these asymmetries to date. |
Note: | Reproducció del document publicat a: https://doi.org/10.1016/j.physletb.2017.05.013 |
It is part of: | Physics Letters B, 2017, vol. 771, p. 21-30 |
URI: | http://hdl.handle.net/2445/186439 |
Related resource: | https://doi.org/10.1016/j.physletb.2017.05.013 |
ISSN: | 0370-2693 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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