Browsing by Author "Erkol, Güray"
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QCD coupling constants and VDM
Erkol, Güray; Ozpineci, A.; Zamiralov, V. S. (AIP, 2012)QCD sum rules for coupling constants of vector mesons with baryons are constructed.The corresponding QCD sum rules for electric charges and magnetic moments are also derived and with the use of vectormesondominance model ... 
QCD sum rules for the coupling constants of vector mesons to octet baryons
Zamiralov, V. S.; Ozpineci, A.; Erkol, Güray (Springer Science+Business Media, 201305)The QCD sum rules on the light cone proposed by Wang for the coupling constants of the ρ meson are generalized to the vector mesons ω and φ and all octet baryons, the Λhyperon included. A comparison with other results is given. 
Radiative transitions of doubly charmed baryons in lattice QCD
Bahtiyar, H.; Can, K. U.; Erkol, Güray; Oka, M.; Takahashi, T. T. (American Physical Society, 20181213)We evaluate the spin3/2→spin1/2 electromagnetic transitions of the doubly charmed baryons on 2+1 flavor, 323×64 PACSCS lattices with a pion mass of 156(9) MeV/c2. A relativistic heavy quark action is employed to minimize ... 
Spin content of Λ in QCD sum rules
Erkol, Güray; Oka, M. (American Physical Society, 20090601)We calculate the isoscalar axialvector coupling constants of the Λ hyperon using the method of QCD sum rules. A determination of these coupling constants reveals the individual contributions of the u, d, and the s quarks ... 
Structure and dynamics of charmed baryons in lattice QCD
Erkol, Güray (AIP, 2017)I report on the transition from factors of Ωcγ → Ωc ∗ and the preliminary results for Ξcγ → Ξ' c transitions in lattice QCD, which give access to the only decay modes of Ωc∗ and Ξ' c. The decay rates of Ωc ∗ and Ξ' c as ... 
Tensor form factors of nucleon in QCD
Erkol, Güray; Ozpineci, A. (Elsevier, 20111025)We extract the isovector tensor nucleon form factors, which play an important role in understanding the transverse spin structure of the nucleon when related to the quark helicityflip generalized parton distributions via ... 
Theoretical determination of K(1)(1270,1400) mixing angle in QCD
Dağ, Hüseyin; Ozpineci, A.; Çağıl, A.; Erkol, Güray (IOP Publishing, 2012)In quark model, the strange axial vector mesons K1(1270) and K1(1400) are defined as the mixtures of orbital angular momentum states K1A and K1B. In this work, by using the orthogonality of the mass eigenstates, we have ... 
Vector and axialvector couplings of D and D⁎ mesons in 2+1 flavor lattice QCD
Can, Kadir Utku; Erkol, Güray; Oka, M.; Ozpineci, A.; Takahashi, T. T. (Elsevier, 20130212)Using the axialvector coupling and the electromagnetic form factors of the D and D⁎ mesons in 2+1 flavor lattice QCD, we compute the D⁎Dπ , DDρ and D⁎D⁎ρ coupling constants, which play an important role in describing ... 
ΛcΣcπ coupling and Σc → Λcπ decay in lattice QCD
Can, K. U.; Erkol, Güray; Oka, M.; Takahashi, T. T. (Elsevier, 20170510)We evaluate the Lambda(c)Sigma(c)pi coupling constant (G(Lambda c)Sigma(c)pi) and the width of the strong decay Sigma(c) > Lambda(c)pi in 2 + 1flavor lattice QCD on four different ensembles with pion masses ranging from ... 
Ξcγ→Ξc ′ transition in lattice QCD
Bahtiyar, H.; Can, K. U.; Erkol, Güray; Oka, M.; Takahashi, T. T. (Elsevier, 20170910)We evaluate the electromagnetic Ξcγ→Ξc ′ transition on 2+1 flavor lattices corresponding to a pion mass of ∼156 MeV. We extract the magnetic Sachs and Pauli form factors which give the Ξc–Ξc ′ transition magnetic moment ... 
Ωcγ → Ω∗ transition in lattice QCD
Bahtiyar, H.; Can, K. U.; Erkol, Güray; Oka, M. (Elsevier, 20150730)We study the electromagnetic View the MathML sourceΩcγ→Ωc⁎ transition in 2+12+1 flavor lattice QCD, which gives access to the dominant decay mode of View the MathML sourceΩc⁎ baryon. The magnetic dipole and the electric ...
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