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Title: Measurement of the Difference of Time-Integrated CP Asymmetries in D0 → K-K+ and D0 → π-π + Decays
Author: Garrido Beltrán, Lluís
Gascón Fora, David
Graciani Díaz, Ricardo
Graugés Pous, Eugeni
Marín Benito, Carla
Picatoste Olloqui, Eduardo
Rives Molina, Vicente José
Badalov, Alexey
LHCb Collaboration
Keywords: Mesons (Física nuclear)
Violació CP (Física nuclear)
Simetria (Física)
Mesons (Nuclear physics)
CP violation (Nuclear physics)
Symmetry (Physics)
Issue Date: 13-May-2016
Publisher: American Physical Society
Abstract: A search for CP violation in D-0 -> K-K+ and D-0 -> pi(-)pi(+) decays is performed using pp collision data, corresponding to an integrated luminosity of 3 fb(-1), collected using the LHCb detector at center-of-mass energies of 7 and 8 TeV. The flavor of the charm meson is inferred from the charge of the pion in D*(+) -> D-0 pi(+) and D*(-) -> (D) over bar (0)pi(-) decays. The difference between the CP asymmetries in D-0 -> K-K+ and D-0 -> pi(-)pi(+) decays, Delta A(CP) A(CP)(K-K+) - A(CP)(pi(-)pi(+)), is measured to be [-0.10 +/- 0.08(stat) +/- 0.03(syst)]%. This is the most precise measurement of a time-integrated CP asymmetry in the charm sector from a single experiment.
Note: Reproducció del document publicat a:
It is part of: Physical Review Letters, 2016, vol. 116, num. 19, p. 191601
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ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)
Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))

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