Some hadronic parameters of charmonia in Nf=2 lattice QCD.

Autor: Bailas, Gabriela, Blossier, Benoît, Morénas, Vincent
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Zdroj: European Physical Journal C -- Particles & Fields; Dec2018, Vol. 78 Issue 12, p1-1, 1p
Abstrakt: The phenomenology of leptonic decays of quarkonia holds many interesting features: for instance, it can establish constraints on scenarios beyond the Standard Model with the Higgs sector enriched by a light CP-odd state. In the following paper, we report on a two-flavor lattice QCD study of the ηc and J/ψ decay constants, fηc=387(3)(3)MeV and fJ/ψ=399(4)(2)MeV. We also examine some properties of the first radial excitation ηc(2S) and ψ(2S). [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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