FEF, Fizik Bölümü, Makale Koleksiyonu
Güncel Gönderiler

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 ... 
The structure, mixing angle, mass and couplings of the light scalar f(0)(500) and f(0)(980) mesons
(Elsevier, 201806)The mixing angle, mass and couplings of the light scalar mesons f(0)(500) and f(0)(980) are calculated in the framework of QCD twopoint sum rule approach by assuming that they are tetraquarks with diquarkantidiquark ... 
Analysis of the structure of Xi (1690) through its decays
(Springer, 201805)The mass and pole residue of the first orbitally and radially excited Xi state as well as the ground state residue are calculated by means of the twopoint QCD sum rules. Using the obtained results for the spectroscopic ... 
Electromagnetic multipole moments of the Pc(+) (4380) pentaquark in lightcone QCD
(Springer, 201805)We calculate the electromagnetic multipole moments of the Pc(+) (4380) pentaquark by modeling it as the diquarkdiquarkantiquark and D* Sigma(c) molecular state with quantum numbers J(P) = 3/2(). In particular, the ... 
The electromagnetic multipole moments of the charged openflavor Z((c)overbarq) states
(IOP Publishing, 201805)The electromagnetic multipole moments of the openflavor Z (c) over barq states are investigated by assuming a diquarkantidiquark picture for their internal structure and quantum numbers J(PC) = 1(+) for their spinparity. ... 
Semileptonic Lambda(b) > Lambda(c)l(v)overbar(l) transition in full QCD
(American Physical Society, 201804)The treelevel b > cl (v) over bar (l) based hadronic transitions have been the focus of much attention since recording significant deviations of the experimental data, on the ratios of the branching fractions in tau and ...