Tau mass measurement at BES-III

A scan of the threshold region of the process e+ e−→ τ+τ− with integrated luminosity about 140 pb−1 was performed with the BES-III detector at the BEPC-II collider in order to measure the τ-lepton mass. The beam energy was determined by the Compton backscattering method. To verify the measurement ac...

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Bibliographic Details
Main Authors: Achasov M.N., Mo X.H., Muchnoi N.Yu., Nikolaev I.B., Privalov S.A., Zhang J.Y.
Format: Article
Language:English
Published: EDP Sciences 2019-01-01
Series:EPJ Web of Conferences
Online Access:https://www.epj-conferences.org/articles/epjconf/pdf/2019/17/epjconf_phipsi18_08005.pdf