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

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 cha...

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Detalles Bibliográficos
Autores: Garrido Beltrán, Lluís, Gascón Fora, David, Graciani Díaz, Ricardo, Graugés Pous, Eugeni, Marin Benito, Carla, Picatoste Olloqui, Eduardo, Rives Molina, Vicente José, Badalov, Alexey, LHCb Collaboration
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2016
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/114429
Acceso en línea:https://hdl.handle.net/2445/114429
Access Level:acceso abierto
Palabra clave:Mesons (Física nuclear)
Violació CP (Física nuclear)
Simetria (Física)
Mesons (Nuclear physics)
CP violation (Nuclear physics)
Symmetry (Physics)
Descripción
Sumario: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.

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