Speaker
Mr
Vyacheslav Ivanov
(Budker Institute of Nuclear Physics)
Description
The process e+e−→K+K− has been studied in the center-of-mass energy range from 1.075 to 2.0 GeV using the data sample of 61 pb−1, collected with the CMD-3 detector at the VEPP-2000 e+e− collider in 2019. For the signal events selection a special technique of particle identification was developed and used. Namely, for the electron, muon and pion backround suppression we used the set of the boosted decision trees classifiers, trained on the base of simulated events samples with the specific energy losses of the particle in the layers of liquid Xenon calorimeter as input variables. The obtained preliminary results for e+e- -> K+K- process cross section have a comparable precision with previous measurements of BaBar and SND.
Primary author
Mr
Vyacheslav Ivanov
(Budker Institute of Nuclear Physics)
