English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We present a study of the inclusive photon spectra from 5.9 million J/psidecays collected with the KEDR detector at the VEPP-4M e+e- collider. Wemeasure the branching fraction of radiative decay J/psi to eta_c gamma, eta_cwidth and mass. Our preliminary results are: M(eta_c) = 2979.4+-1.5+-1.9 MeV,G(eta_c) = 27.8+-5.1+-3.3 MeV, B(J/psi to eta_c gamma) = (2.34+-0.15+-0.40)%.

Measurement of J/psi to eta_c gamma at KEDR