EPJ Web Conf.
Volume 212, 2019The 12th International Workshop on e+e- Collisions from Phi to Psi (PhiPsi 2019)
|Number of page(s)||6|
|Section||e+e- Annihilation and Gamma-gamma Physics|
|Published online||17 June 2019|
Status of R value measurement at BESIII
Institute of High Energy Physics, CAS, Beijing
* e-mail: email@example.com
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
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.