Search for CP violation in D (+/-) -> (KSK +/-)-K-0 and D-s(+/-) -> K-S(0)pi(+/-) decays

A search for CP violation in Cabibbo-suppressed D± → K0 SK± and D± s → K0 S π ± decays is performed using pp collision data, corresponding to an integrated luminosity of 3 fb−1 , recorded by the LHCb experiment. The individual CP-violating asymmetries are measured to be A D±→K0 SK± CP = (+0.03 ± 0.1...

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Detalles Bibliográficos
Autores: Camboni, Alessandro, Garrido Beltrán, Lluís, Graciani Díaz, Ricardo, Graugés Pous, Eugeni, Marin Benito, Carla, Picatoste Olloqui, Eduardo, Rives Molina, Vicente José, Ruiz, Hugo (Ruiz Pérez), LHCb Collaboration
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2014
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/185637
Acceso en línea:https://hdl.handle.net/2445/185637
Access Level:acceso abierto
Palabra clave:Hadrons
Gran Col·lisionador d'Hadrons
Física de partícules
Experiments
Large Hadron Collider (France and Switzerland)
Particle physics
Descripción
Sumario:A search for CP violation in Cabibbo-suppressed D± → K0 SK± and D± s → K0 S π ± decays is performed using pp collision data, corresponding to an integrated luminosity of 3 fb−1 , recorded by the LHCb experiment. The individual CP-violating asymmetries are measured to be A D±→K0 SK± CP = (+0.03 ± 0.17 ± 0.14)% A D ± s →K0 S π± CP = (+0.38 ± 0.46 ± 0.17)%, assuming that CP violation in the Cabibbo-favoured decays is negligible. A combination of the measured asymmetries for the four decay modes D ± (s) → K0 SK± and D ± (s) → K0 S π ± gives the sum A D±→K0 SK± CP + A D ± s →K0 S π± CP = (+0.41 ± 0.49 ± 0.26)%. In all cases, the first uncertainties are statistical and the second systematic. The results represent the most precise measurements of these asymmetries to date and show no evidence for CP violation. Submitted to JHEP

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