000001824 001__ 1824
000001824 005__ 20200127144110.0
000001824 037__ $$aBELLE2-CONF-PROC-2020-002
000001824 041__ $$aeng
000001824 100__ $$aVladimir Chekelian
000001824 245__ $$aFirst Look at the Time-Dependent $CP$ Violation Using Early Belle II Data
000001824 260__ $$a$$c2020-01-27
000001824 300__ $$a5
000001824 520__ $$aThe Belle~II experiment at the SuperKEKB energy-asymmetric $e^+ e^-$ collider started the first physics run in March 2019 at a center of mass energy corresponding to the mass of the $\Upsilon(4S)$. A first look at the time-dependent $CP$ violation is presented, utilising an early data set comprising 2.6 fb$^{-1}$ of total luminosity. A new concept of time-dependent fits based on a weighting technique applied to an {\it assistive} MC sample of events is presented as well.
000001824 6531_ $$aCP violation
000001824 6531_ $$aB0-B0bar mixing
000001824 6531_ $$aB0 lifetime
000001824 6531_ $$atime-dependent analysis
000001824 6531_ $$aweighting technique
000001824 8560_ $$fvladimir.shekelyan@desy.de
000001824 8564_ $$uhttps://docs.belle2.org/record/1824/files/BELLE2-CONF-PROC-2020-002.pdf