Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/131208
Title: | Measurement of CP violation in B0s → ϕϕ decays |
Author: | Badalov, Alexey Calvo Gómez, Míriam Garrido Beltrán, Lluís Graciani Díaz, Ricardo Graugés Pous, Eugeni Marin Benito, Carla Picatoste Olloqui, Eduardo Rives Molina, Vicente José Ruiz, Hugo (Ruiz Pérez) Vilasis-Cardona, Xavier LHCb Collaboration |
Keywords: | Física de partícules Gran Col·lisionador d'Hadrons Col·lisions (Física nuclear) Particle physics Large Hadron Collider (France and Switzerland) Collisions (Nuclear physics) |
Issue Date: | 30-Sep-2014 |
Publisher: | American Physical Society |
Abstract: | A measurement of the decay time-dependent C P -violating asymmetry in B 0 s → ϕ ϕ decays is presented, along with measurements of the T -odd triple-product asymmetries. In this decay channel, the C P -violating weak phase arises from the interference between B 0 s − ¯ B 0 s mixing and the loop-induced decay amplitude. Using a sample of proton-proton collision data corresponding to an integrated luminosity of 3.0 fb − 1 collected with the LHCb detector, a signal yield of approximately 4000 B 0 s → ϕ ϕ decays is obtained. The C P -violating phase is measured to be ϕ s = − 0.17 ± 0.15 ( stat ) ± 0.03 ( syst ) rad . The triple-product asymmetries are measured to be A U = − 0.003 ± 0.017 ( stat ) ± 0.006 ( syst ) and A V = − 0.017 ± 0.017 ( stat ) ± 0.006 ( syst ) . Results are consistent with the hypothesis of C P conservation. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.90.052011 |
It is part of: | Physical Review D, 2014, vol. 90, num. 5, p. 052011 |
URI: | http://hdl.handle.net/2445/131208 |
Related resource: | https://doi.org/10.1103/PhysRevD.90.052011 |
ISSN: | 1550-7998 |
Appears in Collections: | Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
645744.pdf | 509.14 kB | Adobe PDF | View/Open |
This item is licensed under a Creative Commons License