Ricardo Matheus

QCD sum rules for the X(3872) as a mixed molecule-charmonium state

We use QCD sum rules to test the nature of the meson

The J/ψDD vertex in QCD sum rules

X(3872)

Are Θ+ and the Roper resonance diquark–diquark–antiquark states?

, assumed to be a mixture between charmonium and exotic molecular

Is the LHC observing the pseudoscalar state of a two-Higgs-doublet model?

[c\overline{q}][q\overline{c}]

Disentangling two- and four-quark state pictures of the charmed scalar mesons

states with

New perspectives for electronic government in Brazil: the adoption of open government data in national and subnational governments of Brazil

{J}^{\mathrm{PC}}={1}^{++}

J/ψ COUPLINGS TO OPEN CHARM MESONS FROM QCD SUM RULES

. We find that there is only a small range for the values of the mixing angle

New Strongly Coupled Sector at the Tevatron and the LHC

\ensuremath{\theta}

Do the QCD sum rules support four-quark states?

that can provide simultaneously good agreement with the experimental value of the mass and the decay width, and this range is

The Lepton Sector of a Fourth Generation

{5}^{0}\ensuremath{\le}\ensuremath{\theta}\ensuremath{\le}{13}^{0}