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Belyaev, I. M.; Egorychev, V. Yu
Physics of atomic nuclei, 11/2015, Letnik: 78, Številka: 8Journal Article
The production of P-wave quarkonium states, χ b , was studied in the LHCb experiment at the Large Hadron Collider (LHC, CERN) in proton–proton collisions at the c.m. energies of 7 and 8 TeV. The results obtained on the basis of a measurement of the relative cross sections for χ b -meson production, the first ever observation of the decay process χ b (3 P ) → ϒ(3 S ) γ , and a precise measurement of the mass of the χ b 1 (3 P ) state are presented in this article.
