Searches for the decays η′→ π{sup 0}γγ and η′ → ηγγ at the GAMS-4π setup
Journal Article
·
· Physics of Atomic Nuclei
- National Research Center Kurchatov Institute, Institute for High Energy Physics (Russian Federation)
Searches for the rare radiative decays η′→ π{sup 0}γγ and η′ → ηγγ were performed at the GAMS-4π setup. The following upper limits were set at a 90% confidence level: Br(η′→ π{sup 0}γγ) < 6 × 10{sup -4} and Br(η′→ ηγγ) < 8×10{sup -4}. The π{sup -}p charge-exchange reaction at the beammomentum of 32.5GeV/c was the source of 1.3 × 106 η′ mesons. The measurements in questions were performed at the U-70 accelerator of the Institute for High Energy Physics (Protvino, Russia)
- OSTI ID:
- 22471984
- Journal Information:
- Physics of Atomic Nuclei, Vol. 78, Issue 9; Other Information: Copyright (c) 2015 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7788
- Country of Publication:
- United States
- Language:
- English
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