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ISSN - 03702693, Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 1982, vol. 118, p. 225-229

A high precision measurement of the υ-meson mass

Artamonov A. S., Baru S. E., Blinov A. E., Bondar A. E., Bukin A. D., Groshev V. R., Denisov N. F., Eidelman Yu I., Inozemtsev N. I., Kiselev V. A., Klimenko S. G., Kezeraschvili G. Ya, Kuper E. A., Kurdadze L. M., Mishnev S. I., Nikitin S. A., Onuchin A. P., Panin V. S., Petrov V. V., Protopopov I. Ya, Saldin E. L., Shamov A. G., Shatunov Yu M., Sidorov V. A., Skrinsky A. N., Tayursky V. A., Telnov V. I., Temnykh A. B., Tikhonov Yu A., Tumaikin G. M., Vorobiov A. I., Yurkov M. V., Zholents A. A.

A high precision measurement of the υ-meson mass has been performed at the storage ring VEPP-4 using the MD-1 detector. The resonance depolarization method has been used for the absolute calibration of the beam energy that allowed to improve the accuracy of υ-mass measurement by a factor of ten. The following mass value has been obtained: M = 9459.7 ± 0.6 MeV. © 1982.