Details

Autor(en) / Beteiligte

• Abellan Beteta, Carlos
• Calvo Gómez, Míriam
• Camboni, Alessandro
• Comerma Montells, Albert
• Garrido Beltrán, Lluís
• Graciani Díaz, Ricardo
• Graugés Pous, Eugeni
• López Asamar, Elias
• Oyanguren Campos, Arantza de
• Pérez-Calero Yzquierdo, Antonio
• Picatoste Olloqui, Eduardo
• Potterat, Cédric
• Rives Molina, Vicente José
• Ruiz, Hugo (Ruiz Pérez)
• Ruiz Valls, Pablo
• Vázquez Gómez, Ricard
• Vilasis-Cardona, Xavier
• LHCb Collaboration

Titel

First Measurement of the CP-Violating Phase in B0s→ϕϕ Decays

Ist Teil von

• Physical review letters, 2013-06

Ort / Verlag

American Physical Society

Erscheinungsjahr

2013

Quelle

American Physical Society Journals

Beschreibungen/Notizen

• A first flavor-tagged measurement of the time-dependent C P -violating asymmetry in B 0 s → ϕ ϕ decays is presented. In this decay channel, the C P -violating weak phase arises due to C P violation in the interference between B 0 s − ¯¯¯ B 0 s mixing and the b → s ¯ s s gluonic penguin decay amplitude. Using a sample of p p collision data corresponding to an integrated luminosity of 1.0     fb − 1 and collected at a center-of-mass energy of 7 TeV with the LHCb detector, 880 B 0 s → ϕ ϕ signal decays are obtained. The C P -violating phase is measured to be in the interval [ − 2.46 , − 0.76 ]     rad at a 68% confidence level. The p value of the standard model prediction is 16%.