Charmonia decay constants from the QCD lattice and QCD sum rules (CROSBI ID 635900)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Bečirević, Damir ; Duplančić, Goran ; Klajn, Bruno ; Melić, Blaženka ; Sanfillipo, Francesco
engleski
Charmonia decay constants from the QCD lattice and QCD sum rules
Using lattice QCD and QCD sum rules we compute the lowest state charmonia J^{;PC};=0^{;−+};(η_c), 1^{;−−};(J/ψ), and 1^{;+−};(h_c) decay constants. For calculating the decay constant of J/ψ we use both the vector and tensor currents and compare the results. Lattice QCD results are obtained from the unquenched (N_f=2) simulations using twisted mass QCD at four lattice spacings and taking the continuum limit. In the QCD sum rule calculation we apply the moment sum rules. We also comment the phenomenological implications of calculated charmonia decay constants in η_c→γγ decay, and B→X_{;c barc}; K decays.
charmonia; decay; QCD; lattice; sum rules
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Podaci o prilogu
1611-1617.
2016.
objavljeno
Podaci o matičnoj publikaciji
Nuclear and Particle Physics Proceedings 273-275
Aguilar-Benítez, M. ; Fuster, J. ; Martí-García, S. ; Santamaría, A.
Elsevier
2405-6014
Podaci o skupu
37th International Conference on High Energy Physics (ICHEP)
predavanje
02.07.2014-09.07.2014
Valencia, Španjolska