Abstract
The Born cross section for the process is measured using the initial state radiation technique with an undetected photon. This analysis is based on datasets corresponding to an integrated luminosity of , collected with the BESIII detector at the BEPCII collider at center of mass energies between 3.773 and 4.600 GeV. The Born cross section for the process and the proton effective form factor are determined in the invariant mass range between 2.0 and divided into 30 intervals. The proton form factor ratio () is measured in 3 intervals of the invariant mass between 2.0 and .
9 More- Received 2 February 2019
DOI:https://doi.org/10.1103/PhysRevD.99.092002
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Published by the American Physical Society