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TY - CONF AU - Nikolaev, I.B. ED - Li, Ying-ying ED - Li, Lu ED - Schaa, Volker RW TI - High Precision Experiments in the J/psi, Psi(2S) and Tau Sector J2 - Proc. of eeFACT2018, Hong Kong, China, 24-27 September 2018 CY - Hong Kong, China T2 - ICFA ABDW on High Luminosity Circular e$^+$e$^-$ Colliders T3 - 62 LA - english AB - High precision experiments in charmonium sector require beam energy calibration. VEPP-4M storage ring with energy measurement by resonant depolarization (RD) method provided high precision mass measurement of J/ψ- and ψ(2S)- mesons with KEDR detector with accuracy 2×10⁻⁶. This narrow resonances can be used for calibration of energy scale of other accelerators such as BEPC-II or future Super Charm-Tau Factories equipped with Compton backscattering (CBS) energy measurement system. PB - JACoW Publishing CP - Geneva, Switzerland SP - 179 EP - 181 KW - polarization KW - resonance KW - scattering KW - detector KW - storage-ring DA - 2019/04 PY - 2019 SN - 978-3-95450-216-5 DO - DOI: 10.18429/JACoW-eeFACT2018-WEXAA01 UR - http://jacow.org/eefact2018/papers/wexaa01.pdf ER -