Precise measurement of Ruds and R between 1.84 and 3.72 GeV at the KEDR detector

KEDR Collaboration, Андрей Михайлович Сухарев, Алексей Леонидович Масленников, Василий Николаевич Кудрявцев, Дмитрий Александрович Максимов, Алексей Леонидович Масленников, Иван Борисович Николаев, Алексей Павлович Онучин, Антон Александрович Осипов, Сергей Владимирович Пелеганчук, Ольга Леонардовна Резанова, Анатолий Альбертович Рубан, Борис Альбертович Шварц, Алексей Александрович Талышев, Юрий Анатольевич Тихонов, A. N. Zhuravlev

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)42-51
Number of pages10
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume788
DOIs
Publication statusPublished - 10 Jan 2019

Keywords

  • TOTAL CROSS-SECTION
  • MONTE-CARLO SIMULATION
  • E(+)E(-) ANNIHILATION
  • RADIATIVE-CORRECTIONS
  • HADRONIC PRODUCTION
  • E&E-ANNIHILATION
  • E+E-ANNIHILATION
  • PARAMETERS
  • ENERGIES

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