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New charged resonance Z−c(4100) : the spectroscopic parameters and width
(Springer, 201903)The mass, coupling and width of the newly observed charged resonance Z−c(4100) are calculated by treating it as a scalar fourquark system with a diquark–antidiquark structure. The mass and coupling of the state ... 
Weak decays of the axialvector tetraquark Tbb;(u)overbar(d)overbar()
(American Physical Society, 201902)The weak decays of the axialvector tetraquark Tbb;(u) over bar(d) over bar() to the scalar state Z(bc;(u) over bar(d) over bar)(0) are investigated using the QCD threepoint sum rule approach. In order to explore the ... 
On the mass and decay constant of the Pwave ground and radially excited h(c) and h(b) axialvector mesons
(IOP Publishing, 201903)The mass and decay constant of the heavy quarkonia h(Q)(1P) and h(Q)(2P) (Q = b, c) with quantum numbers J(PC) = 1(+) are calculated in the framework of the twopoint QCD sum rule method by taking into account the vacuum ... 
The nonet of the light scalar tetraquarks: The mesons a(0)(980) and K0*(800)
(Elsevier, 201902)The spectroscopic parameters and partial decay widths of the light mesons a(0)(980) and K0*(800) are calculated by treating them as scalar diquarkantidiquark states. The masses and couplings of the mesons are found in ... 
The doubly charmed pseudoscalar tetraquarks Tcc(;(s)overbar(s)overbar)++ and Tcc(;(d)overbar<)(s()over bar)>(++)
(Elsevier, 201902)The mass and coupling of the doubly charmed J(P) = 0() diquarkantidiquark states Tcc (s) over bar(s) over bar(++) and Tcc;(d) over bar<(s)over (++)(bar)(>) that bear two units of the electric charge are calculated by ... 
Probing an axialvector tetraquark Zs via its semileptonic decay Zs → X(4274) l¯ νl
(Springer, 201807)The semileptonic decays of the open charmbottom axialvector tetraquark Zs= [cs] [b¯ s¯] to X(4274) l¯ νl , l= e, μ, τ are explored by means of the QCD threepoint sum rule method. Both Zs and X(4274) = [cs] [c¯ s¯] are ... 
Interpretation of the newly discovered Ω (2012)
(American Physical Society, 2018)Very recently, Belle Collaboration reported observation of a narrow state called Ω(2012) with mass 2012.4±0.7(stat)±0.6(syst) MeV and width 6.42.0+2.5(stat)±1.6(syst) MeV. We calculate the mass and residue of the Ω(2012) ... 
The structure, mixing angle, mass and couplings of the light scalar f0(500) and f0(980) mesons
(Elsevier, 201806)The mixing angle, mass and couplings of the light scalar mesons f0(500) and f0(980) are calculated in the framework of QCD twopoint sum rule approach by assuming that they are tetraquarks with diquark–antidiquark structures. ... 
Strong decay of Pc(4380) pentaquark in a molecular picture
(Elsevier, 201807)There are different assumptions on the substructure of the pentaquarks Pc(4380) and Pc(4450), newly founded in J/ψN invariant mass by the LHCb Collaboration, giving consistent mass results with the experimental observations. ... 
The electromagnetic multipole moments of the possible charmstrange pentaquarks in lightcone QCD
(Springer, 201809)We investigate the electromagnetic properties of possible charmstrange pentaquarks in the framework of the lightcone QCD sum rule using the photon distribution amplitudes. In particular, by calculating the corresponding ... 
Beautiful mathematics for beautyfull and other multiheavy hadronic systems
(Springer, 201809)In most nonperturbative methods in hadron physics the calculations are started with a correlation function in terms of some interpolating and transition currents in x space. For simplicity, the calculations are then ... 
On the nature of Ξc(2930)
(Springer, 201809)The single charmed excited Ξc(2930) state was discovered many years ago by the BABAR Collaboration and recently confirmed by Belle experiment. However, both these experiments, unfortunately, could not fix the quantum numbers ... 
Possible molecular pentaquark states with different spin and quark configurations
(American Physical Society, 201809)We investigate three possible pentaquark candidates, one of which contains a single charm quark and the other two contain triple charm quarks in their substructure. To this end we apply the QCD sum rule method and take ... 
The strong decays of the light scalar mesons f0(500) and f0(980)
(Elsevier, 201809)The partial width of the decay channels f0(500)→ππ f0(980)→ππ and f0(980)→KK¯ are calculated using QCD lightcone sum rules method and a technique of the soft meson approximation. The scalar particles are treated as mixtures ... 
Resonance Y(4660) as a vector tetraquark and its strong decay channels
(American Physical Society, 201809)The spectroscopic parameters and partial widths of the strong decay channels of the vector meson Y(4660) are calculated by treating it as a bound state of a diquark and antidiquark. The mass and coupling of the JPC=1  ... 
Structure of the Ξb (6227) resonance
(American Physical Society, 2018)We explore the recently observed Ξbð6227Þ− resonance to fix its quantum numbers. To this end, we consider various possible scenarios: It can be considered as either a 1P or 2S excitation of the Ξ−b and Ξ0bð5935Þ groundstate ... 
X(3872): propagating in a dense medium
(Elsevier, 2018)In cold nuclear matter, the shifts in the mass and currentmeson coupling as well the vector self energy of the exotic X(3872)are calculated using the diquark–antidiquark current within the framework of the inmedium ... 
Nature of the Ω (2012) through its strong decays
(Springer, 2018)We extend our previous analysis on the mass of the recently discovered Ω (2012) state by investigation of its strong decays and calculation of its width employing the method of light cone QCD sum rule. Considering two ... 
Probing an axialvector tetraquark Z(s) via its semileptonic decay Z(s) > X(4274)(I)overbar nu(I)
(Springer, 201807)The semileptonic decays of the open charmbottom axialvector tetraquark Z(s) = [cs][(b) over bar(s) over bar] to X(4274) (l) over bar nu(l) = e, mu, tau are explored by means of the QCD threepoint sum rule method. Both ... 
Strong decay of Pc (4380) pentaquark in a molecular picture
(Elsevier, 20180710)There are different assumptions on the substructure of the pentaquarks Pc(4380) and Pc(4450), newly founded in J/psi N invariant mass by the LHCb Collaboration, giving consistent mass results with the experimental ...