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Study of η–η′ mixing in B-meson decay with the LHCb detector

Physics of Atomic Nuclei, ISSN: 1063-7788, Vol: 79, Issue: 2, Page: 288-291
2016
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Article Description

The first ever observation of the decay process B → J/ψη′ is described. The branching ratios were measured for the decay processes B → J/ψη(′), and the η–η′ mixing angles were determined on this basis. The first indication of the occurrence of the decay process B → ψ(2S)η′ is presented. The respective analysis was performed on the basis of data accumulated with the LHCb detector in proton–proton collisions at the c.m. collision energies of 7 and 8 TeV and the integrated luminosity of 3 fb.

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