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Status of Measurement of R Value at BESIII.

Authors :
Denig, A.
Redmer, C.-F.
Yan, Wenbiao
Source :
EPJ Web of Conferences. 10/18/2019, Vol. 218, p1-6. 6p.
Publication Year :
2019

Abstract

The R value is important for muon magnetic moment aµ and QED running coupling constant evaluated at Z pole, is useful to extract resonance parameters. BESIII experiment collected about 130 energy points between 2.0GeV and 4.6GeV for a precise measurement of R value. The status of R measurement at BESIII is reported in this paper. [ABSTRACT FROM AUTHOR]

Subjects

Subjects :
*MAGNETIC moments
*QUANTUM electrodynamics
*RESONANCE
*STANDARD model (Nuclear physics)
*ELECTROWEAK interactions

Details

Language :
English
ISSN :
21016275
Volume :
218
Database :
Academic Search Index
Journal :
EPJ Web of Conferences
Publication Type :
Conference
Accession number :
139291886
Full Text :
https://doi.org/10.1051/epjconf/201921802009
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