2018/05/31 by V. V. Anashin, В.В. Анашин, O. V. Anchugov +145 · 1 citation
Physics and Astronomy · #Detector #High-Energy Particle Collisions Research #Nuclear physics #Optics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.1016/j.physletb.2018.11.012
arXiv admin note: text overlap with arXiv:1610.02827 and substantial text overlap with arXiv:1510.02667
arxiv created 2018/11/08 · openalex publication_date 2018/11/12 · arxiv updated 2018/11/14 · openalex created_date 2018/11/16 · openalex updated_date 2026/08/05
The present work continues a series of the KEDR measurements of the R value that started in 2010 at the VEPP-4M e+e− collider. By combining new data with our previous results in this energy range we measured the values of Ruds and R at nine center-of-mass energies between 3.08 and 3.72 GeV. The total accuracy is about or better than 2.6% at most of energy points with a systematic uncertainty of about 1.9%. Together with the previous precise R measurement at KEDR in the energy range 1.84–3.05 GeV, it constitutes the most detailed high-precision R measurement near the charmonium production threshold.