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Measurement of the two-photon widths of thea 2,η′, η

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Zeitschrift für Physik C Particles and Fields

Abstract

Results of a measurement of the two-photon widths of thea 2, η′, η with the detector MD-1 at thee + e − collider VEPP-4 are presented. The specific feature of this experiment is tagging of at least one scattered electron. The following results have been obtained

$$\begin{gathered} \Gamma _{\gamma \gamma } (a_2 ) = 1.26 \pm 0.26 \pm 0.18 keV, \hfill \\ \Gamma _{\gamma \gamma } (\eta ') = 4.6 \pm 1.1 \pm 0.6 keV, \hfill \\ \Gamma _{\gamma \gamma } (\eta ) = 0.51 \pm 0.12 \pm 0.05 keV. \hfill \\ \end{gathered} $$

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Authors and Affiliations

  1. Institute of Nuclear Physics, SU-630090, Novosibirsk, USSR

    S. E. Baru, A. E. Blinov, V. E. Blinov, A. E. Bondar, A. D. Bukin, Yu. I. Eidelman, V. R. Groshev, V. A. Kiselev, S. G. Klimenko, G. M. Kolachev, S. I. Mishnev, A. P. Onuchin, V. S. Panin, V. V. Petrov, I. Ya. Protopopov, A. G. Shamov, V. A. Sidorov, Yu. I. Skovpen, A. N. Skrinsky, V. A. Tayursky, V. I. Telnov, A. B. Temnykh, Yu. A. Tikhonov, G. M. Tumaikin, A. E. Undrus, A. I. Vorobiov, V. N. Zhilich & A. A. Zholents

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Baru, S.E., Blinov, A.E., Blinov, V.E. et al. Measurement of the two-photon widths of thea 2,η′, η . Z. Phys. C - Particles and Fields 48, 581–585 (1990). https://doi.org/10.1007/BF01614692

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  • DOI: https://doi.org/10.1007/BF01614692

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