Buscar
Mostrando ítems 1-10 de 164
D*D rho vertex from QCD sum rules
(ELSEVIER SCIENCE BV, 2011)
We calculate the form factors and the coupling constant in the D*D rho vertex in the framework of QCD sum rules. We evaluate the three-point correlation functions of the vertex considering D, rho and D* mesons off-shell. ...
QCD sum rules for the 'Z POT + IND C' (3900) state.
(World Scientific Publishing Company, 2014-01-22)
We use the QCD sum rules to study the recently observed charmonium-like structure
Z+
c (3900) as a tetraquark state. We evaluate the three-point function and extract the
coupling constants of the Z+
c J/ψ π+, Z+
c ηc ...
Qcd Sum Rules for the G(KK*pi)(Q(2)) form factor
(World Scientific Publ Co Pte Ltd, 2003-01-01)
The QCD Sum Rules have been used to evaluate the form factor in the vertex KK*pi. The method of QCD Sum Rules is based on the duality principle in which it is assumed that the hadrons can simultaneously be described in two ...
The omega DD vertex in a sum rule approach
(Elsevier B.V., 2007-01-18)
The study of charmonium dissociation in heavy ion collisions is generally performed in the framework of effective Lagrangians with meson exchange. Some studies are also developed with the intention of calculate form factors ...
The omega DD vertex in a sum rule approach
(Elsevier B.V., 2007-01-18)
The study of charmonium dissociation in heavy ion collisions is generally performed in the framework of effective Lagrangians with meson exchange. Some studies are also developed with the intention of calculate form factors ...
QCD sum rule calculation for the charmonium-like structures in the J/psi phi and J/psi omega invariant mass spectra
(ELSEVIER SCIENCE BV, 2011)
Using the QCD sum rules we test if the charmonium-like structure Y(4274), observed in the J/psi phi invariant mass spectrum, can be described with a D(s)(D) over bar (s0)(2317)+ h.c. molecular current with J(PC) = 0(-+). ...
Finite temperature qcd sum rules: a review
(2017)
The method of QCD sum rules at finite temperature is reviewed, with emphasis on recent results. These include predictions forthe survival of charmonium and bottonium states, at and beyond the critical temperature for ...
Qcd determination of the magnetic field dependence of qcd and hadronic parameters
(2018)
A set of four finite energy QCD sum rules are used to determine the magnetic field dependence of the sum of the up- and down-quark masses of QCD, (m(u) + m(d)), the pion decay constant f(pi), the pion mass m(pi), the gluon ...
QCD sum rules study of the J(PC)=1(- -) charmonium Y mesons
(ELSEVIER SCIENCE BV, 2009)
We use QCD sum rules to test the nature of the recently observed mesons Y(4260), Y(4350) and Y(4660), assumed to be exotic four-quark (c (c) over barq (q) over bar) or (c (c) over bars (s) over bar) states with J(PC)= ...