2741324 20250206125155.0 oai:cds.cern.ch:2741324 cerncds:FULLTEXT ATL-PHYS-SLIDE-2020-397 eng ATL-COM-PHYS-2020-682 AUTHOR|(INSPIRE)INSPIRE-00655960 AUTHOR|(SzGeCERN)762502 Meshkov, Oleg oleg_meshkov93@mail.ru M.V.Lomonosov Moscow State University The ATLAS collaboration Measurement of the CP violation in Bs ->J/ψϕ decays in pp collisions at √s= 13 TeV with the ATLAS detector 2020 Geneva CERN 13 Oct 2020 mult. p In the Standard Model of particle physics, CP violation arises due to a single complex phase in the Cabibbo–Kobayashi–Maskawa (CKM) quark mixing matrix. Precise measurements of the CKM parameters therefore constrain the Standard Model, and may reveal new physics effects. The measurement of the time–dependent decay rates of Bs -> J/ψϕ provides a theoretically clean method for extracting CP–violating weak mixing phase phi_s. This poster will present the most recent results from ATLAS on the CP-violating mixing phase phi_s and on several other parameters describing the Bs meson system. SLIDE CERN CDS-Invenio WebSubmit SzGeCERN Particle Physics - Experiment SzGeCERN Physics CERN BPHYS CERN INTNOTE PRIVATLAS PUBLATLASSLIDE CERN LHC ATLAS PH-EP ATLAS Collaboration http://cds.cern.ch/record/2734067 Original Communication (restricted to ATLAS) 2253404 3101678 http://cds.cern.ch/record/2741324/files/ATL-PHYS-SLIDE-2020-397.pdf oleg.meshkov@cern.ch n 202070 91 2718781 ATL-PHYS-SLIDE-2020-397 moscow20201005 PUBLIC 000770174CER PUBLATLASSLIDE Slides