Measurement of the Difference of Time-Integrated CP Asymmetries in D0 → K-K+ and D0 → π-π + Decays

All of RECERCAT

To access the full text documents, please follow this link: http://hdl.handle.net/2445/114429

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
Other authors:	Universitat de Barcelona
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.
Subject(s):	-Mesons (Física nuclear) -Violació CP (Física nuclear) -Simetria (Física) -Mesons (Nuclear physics) -CP violation (Nuclear physics) -Symmetry (Physics)
Rights:	cc-by (c) CERN, 2016 http://creativecommons.org/licenses/by/3.0/es
Document type:	Article Article - Published version
Published by:	American Physical Society
Share: