Abstract
A brief review of the recent results on the hadronic cross section measurements with the CMD-3 detector at the e+e− collider VEPP-2000 is given. Focus is made on the processes with charged kaons in multihadron events, which have a strong impact on strange meson spectroscopy and form factors that are important ingredients in the Dalitz plot analysis. Experimental data relevant to the topic are presented from the broad energy range covered by VEPP-2000 and compared to earlier measurements by the different collaborations. The analysis is based on the integrated luminosity of about 100 pb−1 collected in 2011, 2012 and 2017.
Highlights
High-precision measurements of the exclusive e+e− → hadrons cross sections are required for many applications, in particular, to evaluate the hadronic contribution to the muon anomalous magnetic moment (AMM)
The major hadronic contribution to AMM comes from energy range covered by the VEPP-2000, that determined the hadronic vacuum polarization itself (∼92%) and its uncertainty
The exclusive K+K−(nπ) final states are of special interest since their production involves rich intermediate dynamics which allows to test the isotopic relations and to measure parameters of these intermediate states. These results are required for the strange meson spectroscopy and form factors that are important ingredients in the Dalitz plot analysis
Summary
High-precision measurements of the exclusive e+e− → hadrons cross sections are required for many applications, in particular, to evaluate the hadronic contribution to the muon anomalous magnetic moment (AMM). Preliminary results on the ratio of the luminosities measured with e+e− → e+e− and γγ events are consistent within ∼1% [3]. The most precise previous study of these processes was performed by the CMD-2, KLOE and BaBar detectors.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
