Measurement of proton electromagnetic form factors in the time-like region using initial state radiation at BESIII

BESIII Collaboration

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3 Citations (Scopus)

Abstract

The electromagnetic process e+e→pp¯ is studied with the initial-state-radiation technique using 7.5 fb−1 of data collected by the BESIII experiment at seven energy points from 3.773 to 4.600 GeV. The Born cross section and the effective form factor of the proton are measured from the production threshold to 3.0 GeV/c2 using the pp¯ invariant-mass spectrum. The ratio of electric and magnetic form factors of the proton is determined from the analysis of the proton-helicity angular distribution.

Original languageEnglish
Article number136328
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume817
DOIs
Publication statusPublished - 10 Jun 2021

Keywords

  • BESIII
  • Electromagnetic form factors
  • Initial state radiation
  • Proton

OECD FOS+WOS

  • 1.03 PHYSICAL SCIENCES AND ASTRONOMY
  • 1.03.BU ASTRONOMY & ASTROPHYSICS

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