Measurement of e+e- → ɸ → K+K- cross section with CMD-2 detector at VEPP-2M collider

Europe/Rome
Seminar Room (Laboratori Nazionali di Frascati, Via Enrico Fermi 40, Frascati)

Seminar Room

Laboratori Nazionali di Frascati, Via Enrico Fermi 40, Frascati

Via Enrico Fermi 40 00044 Frascati
Description
ABSTRACT

The process e+e- → ɸ → K+K- has been studied with the CMD-2 detector using about 542 000 events detected in the center-of-mass energy range from 1.01 to 1.034 GeV. The systematic error of the cross section is estimated to be 2.2%. The ɸ(1020) meson parameters in the ɸ → K+K- decay channel have been measured: σ ɸ (ɸ → K+K-) = 2016 ± 8 ± 44 nb, mɸ = 1019.441 ± 0.008 ± 0.080 MeV/c², Γ = 4.24±0.02±0.03 MeV, B(e+e-)B(K+K-) = (14.27±0.05±0.31)×10(-5).

The agenda of this meeting is empty
Your browser is out of date!

Update your browser to view this website correctly. Update my browser now

×