Browsing Faculty of Engineering by OzU Authors "Erkol, Güray"
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Axial charges of octet baryons in twoflavor lattice QCD
Erkol, Güray; Oka, M.; Takahashi, T. T. (Elsevier, 20100315)We evaluate the strangenessconserving NN, ΣΣ, ΞΞ, ΛΣ and the strangenesschanging ΛN, ΣN, ΛΞ, ΣΞ axial charges in lattice QCD with two flavors of dynamical quarks and extend our previous work on pseudoscalarmeson–octetbaryon ... 
Charmed baryon spectrum from lattice QCD near the physical point
Bahtiyar, H.; Can, K. U.; Erkol, Güray; Gubler, P.; Oka, M.; Takahashi, T. T. (American Physical Society, 20200923)We calculate the lowlying spectrum of charmed baryons in lattice QCD on the 32(3) x 64, Nf = 2 +/ 1 PACSCS gauge configurations at the almost physical pion mass of similar to 156 MeV/c(2). By employing a set of ... 
Electromagnetic properties of doubly charmed baryons in Lattice QCD
Can, K. Utku; Erkol, Güray; Işıldak, Bora; Oka, M.; Takahashi, T. T. (Elsevier, 20131104)We compute the electromagnetic properties of Ξcc baryons in (2+1)flavor Lattice QCD. By measuring the electric charge and magnetic form factors of Ξcc baryons, we extract the magnetic moments, charge and magnetic radii ... 
Electromagnetic structure of charmed baryons
Can, K. U.; Oka, M.; Erkol, Güray; Işıldak, Bora; Takahashi, T. T. (Proceedings of Science, 2013)We compute the electromagnetic form factors of charmed baryons (∑ c, (ξcc, ω c and ω cc) in 2+1 Lattice QCD and extract their electric and magnetic charge radii as well as their magnetic moments. Such observables are ... 
Electromagnetic structure of charmed baryons  extended to spin3/2
Can, K. U.; Oka, M.; Erkol, Güray; Takahashi, T. T. (2015)The electromagnetic form factors of the spin3/2 Ω baryons, namely the Ω, Ω∗c , Ω∗ cc and Ωccc, are calculated in full QCD on 323 x 64 PACSCS lattices with a pION mass of 156(9) MeV. The electric charge radii and magnetic ... 
Electromagnetic structure of charmed baryons in Lattice QCD
Can, Kadir Utku; Erkol, Güray; Işıldak, Bora; Oka, M.; Takahashi, T. T. (Springer Science+Business Media, 201405)As a continuation of our recent work on the electromagnetic properties of the doubly charmed (sic)(cc) baryon, we compute the charge radii and the magnetic moments of the singly charmed Sigma(c), Omega(c) and the doubly ... 
Electromagnetic structure of charmed hadrons
Erkol, Güray; Can, K. U.; Işıldak, Bora; Oka, M.; Ozpineci, A.; Takahashi, T. T. (IOP Publishing, 2014)We compute the electromagnetic structures of D and D* mesons, the singly charmed Σc, Ωc and the doubly charmed Ξcc, Ωcc baryons in 2+1 flavor Lattice QCD. We extract the charge radii and the magnetic moments of these ... 
First lattice calculation of charmed hadrons' electromagnetic form factors
Can, K. Utku; Erkol, Güray; Işıldak, Bora; Oka, M.; Takahashi, T. T. (IOP Publishing, 2014)Electromagnetic form factors of D and D* mesons and Ξcc, Σc, Ωc and Ωcc baryons are calculated in 2+1 flavor lattice QCD. As a by product of this calculation electric/magnetic charge radii and magnetic moments are extracted. ... 
Isovector axialvector form factors of octet baryons in QCD
Erkol, Güray; Ozpineci, A. (American Physical Society, 20110601)We compute the diagonal isovector axialvector as well as induced pseudoscalar form factors of nucleon, Σ, and ≡ baryons by employing the lightcone QCD sum rules to leading order in QCD and including distribution amplitudes ... 
A look inside charmedstrange baryons from lattice QCD
Can, K. U.; Erkol, Güray; Oka, M.; Takahashi, T. T. (American Physical Society, 20151201)The electromagnetic form factors of the spin3/2 Ω baryons, namely Ω, Ω∗c, Ω∗cc and Ωccc, are calculated in full QCD on 323×64 PACSCS lattices with a pion mass of 156(9) MeV. The electric charge radii and magnetic moments ... 
Mesonbaryon coupling constants in twoflavor lattice QCD
Erkol, Güray; Oka, M.; Takahashi, T. T. (American Institute of Physics, 2010)We evaluate the pseudoscalarmeson coupling constants and the strangenessconservingand the strangenesschanging axial charges of octet baryons in lattice QCD with two flavors ofdynamical quarks.We find that the coupling ... 
Pseudoscalarmeson octetbaryon coupling constants from twoflavor lattice QCD
Takahashi, T. T.; Erkol, Güray; Oka, M. (Elsevier, 20100401)We evaluate the pseudoscalarmeson octetbaryon coupling constants and the corresponding axial charges in eight channels (πNN, πΣΣ, πΛΣ, KΛN, KΣN, πΞΞ, KΛΞ and KΣΞ) in lattice QCD with two flavors of dynamical quarks. The ... 
Pseudoscalarmesonoctetbaryon coupling constants in twoflavor lattice QCD
Erkol, Güray; Oka, M.; Takahashi, T. T. (American Physical Society, 20090401)We evaluate the πΝΝ, π∑∑, πΛ∑, KΛN and K∑N coupling constants and the corresponding monopole masses in lattice QCD with two flavors of dynamical quarks. The parameters representing the SU(3)flavor symmetry are computed ... 
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 ...
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