Status of R value measurement at BESIII
Institute of High Energy Physics, CAS, Beijing
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Published online: 17 June 2019
The dominant systematic error of R value measurement comes from the hadronic generator simulations. This paper reviews the present status of R value measurement from 2.232 to 3.671 GeV at 14 energy points, especially describes the calculations of initial state radiative correction and the issue of the parameter tuning for the Lund area law generator LUARLW.
© The Authors, published by EDP Sciences, 2019
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