M. E. Bracco

activity

19942017

most cited

D^{*} D π

form factor revisited

95 citations · 370 across the 16 of their papers we have counts for

collaborators

Showing hep-phShow all

11 papers · 1 filter

hep-ph2017★ 7 cited

A QCD sum rules calculation of the $η_{c} D^{} D$ and $η_{c} D_{s}^{} D_{s}$ form factors and strong coupling constants

B. Osório Rodrigues, M. E. Bracco, C. M. Zanetti

We use the QCD sum rules for the three point correlation functions to compute the strong coupling constants of the meson vertices $η_{c} D^{*} D$ and $η_{c} D_{s}^{*} D_{s}$ . We consider pertu…

hep-ph2015★ 7 cited

$B_{s} B^{} K$ and $B_{s} B K^{}$ vertices using QCD sum rules

A. Cerqueira, B. Osório Rodrigues, M. E. Bracco +1

The form factors and the coupling constant of the $B_{s} B^{*} K$ and $B_{s} B K^{*}$ vertices are calculated using the QCD sum rules method. Three point correlation functions are compute…

hep-ph2011★ 28 cited

$B_{s}^{*} B K$ vertex from QCD sum rules

A. Cerqueira, B. Osório Rodrigues, M. E. Bracco

The form factors and the coupling constant of the $B_{s}^{*} B K$ vertex are calculated using the QCD sum rules method. Three point correlation functions are computed considering both…

hep-ph2010★ 25 cited

The B_{s0} meson and the B_{s0}B K coupling from QCD sum rules

M. E. Bracco, M. Nielsen

We evaluate the mass of the $B_{s 0}$ scalar meson and the coupling constant in the $B_{s 0} B K$ vertex in the framework of QCD sum rules. We consider the $B_{s 0}$ as a tetraquark s…

hep-ph2006★ 1 cited

Coupling constants of $D^{} D_{s} K$ and $D_{s}^{} D K$ processes

M. E. Bracco, A. Lozea, A. Cerqueira +2

We calculate the coupling constants of $D^{*} D_{s} K$ and $D_{s}^{*} D K$ vertices using the QCD sum rules technique. We compare results obtained in the limit of SU(4) symmetry and found that…

hep-ph2006★ 7 cited

Investigating the tetraquark structure of the new mesons

M. Nielsen, F. S. Navarra, M. E. Bracco

Using the QCD sum rule approach we investigate the possible four-quark structure of the recently observed mesons $D_{s J}^{+} (2317)$ , firstly observed by BaBaR, X(3872), firstly obs…

hep-ph2006

Reply to ``Reply to comment on A QCD sum rule study of the light scalar mesons"

M. E. Bracco, F. S. Navarra, M. Nielsen

This paper has been withdrawn by the authors. We have discovered an error in the evaluation of the diagram, which invalidates our conclusion.

hep-ph2005★ 26 cited

Diquark-Antidiquark with open charm in QCD sum rules

M. Nielsen, R. D. Matheus, F. S. Navarra +2

Using the QCD sum rule approach we investigate the possible four-quark structure of the recently observed charmed scalar mesons $D_{0}^{0} (2308)$ (BELLE) and $D_{0}^{0, +} (2405)$ (FOCUS…

hep-ph2001★ 95 cited

$D^{*} D π$ form factor revisited

F. S. Navarra, M. Nielsen, M. E. Bracco

The $D^{*} D π$ form factor is evaluated in a QCD sum rule calculation for both $D$ and $π$ off-shell mesons. We study the Borel sum rule for the three-point function of one pseudoscal…

hep-ph2001★ 66 cited

D and rho Mesons: Who resolves whom?

M. E. Bracco, M. Chiapparini, A. Lozea +2

The DDrho form factor is evaluated in a QCD sum rule calculation for both D and rho off-shell mesons. We study the double Borel sum rule for the three point function of two pseudos…

hep-ph1999

Hyperon-nucleon coupling from QCD sum rules

M. E. Bracco, F. S. Navarra, M. Nielsen

The NKY coupling constant for $Y = Λ$ and $Σ$ is evaluated in a QCD sum rule calculation. We discuss and extend the result of a previous analysis in the $/ q i γ_{5}$ structure…