Measurement of time-dependent CP violation in B 0 → η′K 0 decaysŠantelj, Luka (Avtor) Bračko, Marko (Avtor) Golob, Boštjan (Avtor) Korpar, Samo (Avtor) Križan, Peter (Avtor) Nanut, Tara (Avtor) Pestotnik, Rok (Avtor) Petrič, Marko (Avtor) Ribežl, Eva (Avtor) Starič, Marko (Avtor) Zupanc, Anže (Avtor) CP violationCKM angle betae+-e- ExperimentsB physicsWe present a measurement of the time-dependent CP violation parameters in B0 → η′K0 decays. The measurement is based on the full data sample containing 772 × 10^6 BB pairs collected at the Υ(4S) resonance using the Belle detector at the KEKB asymmetric-energy e+e− collider. The measured values of the mixing-induced and direct CP violation parameters are: sin⁡ 2ϕ1eff=+0.68±0.07±0.03, Aη′K0=+0.03±0.05±0.04, where the first uncertainty is statistical and the second is systematic. The values obtained are the most accurate to date. Furthermore, these results are consistent with our previous measurements and with the world-average value of sin 2ϕ1 measured in B0 → J/ψK0 decays.20142017-06-27 12:08:41Znanstveno delo66462ISSN: 1029-8479UDK: 539.1OceCobissID: 1314148COBISS_ID: 28166695DOI: 10.1007/JHEP10(2014)165ISSN pri članku: 1029-8479NUK URN: URN:SI:UM:DK:IOEFGCVWsl