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Article Citation - WoS: 12Citation - Scopus: 12Investigation of a Candidate Spin-1/2 Hidden-Charm Triple Strange Pentaquark State pcsss<(Amer Physical Soc, 2023) Azizi, K.; Sarac, Y.; Sundu, H.A candidate triple strange pentaquark state, P-csss, is investigated through its strong decay channel P-csss -> C2-J=y/. To calculate the relevant strong coupling constants, two possible interpolating currents with spin-parity JP 1/4 1 - are used. Though the chosen currents for the state under consideration have spin-parity quantum numbers JP 1/4 1 -, they couple to both the positive and negative parity states simultaneously and the corresponding decay widths are obtained for both parities. These widths are obtained as foP(csss) -> J=y/C2- +/_ 1/4 201.4 82.5 MeV for the negative and fo P similar to csss -> J=y/C2- +/_ 1/4 316.4 107.8 MeV for the positive parity state when the first current is used. For the second current, we obtain foP(csss) -> J=y/C2- +/_ 1/4 252.5 116.7 MeV for the negative and fo P similar to csss -> J=y/C2- +/_ 1/4 361.1 ; 98.4 MeV for the positive parity state. These results may provide insights into future experimental observations of such candidate states and help to distinguish and fix their properties.Article Analysis of Theb(s)→t(jp=2-) Transition in Light Cone Qcd Sum Rules(Amer Physical Soc, 2025) Aliev, T. M.; Sarac, Y.The semileptonic B & eth;s & THORN; -* T & eth;JP 1/4 2-& THORN;l & thorn;l- decays induced by flavor changing neural currents are investigated within the light cone quantum chromodynamics (QCD) sum rule method in the leading order of O & eth;as & THORN;. We apply the B meson distribution amplitudes up to twist-4 and calculate the relevant form form factors then adopted in the calculations of the corresponding widths. The present results can be used in future experiments for studying the properties of JP 1/4 2- tensor mesons.Article Citation - WoS: 1Citation - Scopus: 1AdS3 Black Holes with Primary Proca Hair from a Regularized Gauss-Bonnet Coupling(Amer Physical Soc, 2025) Alkac, Gokhan; Mesta, Murat; Unal, GonulWe construct a consistent three-dimensional Einstein-Gauss-Bonnet theory as a vector-tensor theory within the generalized Proca class by employing a regularization procedure based on the Weyl geometry, which was introduced recently by Charmousis, Fernandes, and Hassaine [Phys. Rev. D 111, 124008 (2025).]. We then obtain an asymptotically Anti-de Sitter (AdS3), static, and circularly symmetric black hole solution with primary Proca hair. Afterward, we investigate the effect of the scalar-tensor GaussBonnet coupling constructed previously by different regularization schemes. We further generalize these solutions by incorporating an electric charge. As special cases, we find a regular black hole solution in addition to charged and uncharged stealth Banados-Teitelboim-Zanelli black hole solutions.Article Citation - WoS: 10Citation - Scopus: 11Investigation of the Strange Pentaquark Candidate Pλψsð4338þ0 Recently Observed by Lhcb(Amer Physical Soc, 2023) Azizi, K.; Sarac, Y.; Sundu, H.The recently observed strange pentaquark candidate, P Lambda yso4338 thorn 0, is investigated to provide information about its nature and substructure. To this end, its mass and width through the decay channels P Lambda yso4338 thorn 0 -> J=y Lambda and P Lambda yso4338 thorn 0 -> ric Lambda are calculated by applying two- and three-point QCD sum rules, respectively. The state is considered as a Xi c D over bar meson-baryon molecular structure with spin-parity quantum numbers JP 1/4 1 -. The obtained mass, mP Lambda 2 yso4338 thorn 0 1/4 4338 130 MeV, and width, Gamma P Lambda yso4338 thorn 0 1/4 10.40 1.93 MeV, are consistent with the experimental data within the presented uncertainties. This allows us to assign a Xi c D over bar molecular structure of JP 1/4 1 - for the P Lambda yso4338 thorn 0 state.Article Citation - WoS: 1Citation - Scopus: 1Reanalysis of rare radiative Ξb- → Ξ-γ decay in QCD(Amer Physical Soc, 2024) Aliev, T. M.; Ozpineci, A.; Sarac, Y.The upper limit of the branching ratio of the rare Xi(-)(b) ->Xi(-)gamma decay is obtained as BRo (Xi(-)(b) ->Xi(-)gamma) < 1.3 x 10(-4) by the LHCb. In the present work we study this decay within the light cone QCD sum rules employing the Xi b distribution amplitudes. At the first stage, the form factors entering the Xi(-)(b) ->Xi(-)gamma decay are obtained. Next, using the results for the form factors the corresponding branching ratio for this decay is estimated to be BR (Xi(-)(b) ->Xi(-)gamma) = (4.8 +/- 1.3)x 10(-5). This value lies below the upper limit established by the LHCb collaboration. Our finding for the branching ratio is also compared with the results of the other theoretical approaches existing in the literature.Article Citation - WoS: 3Microscopic Entropy of Static Black Holes in 3d Lovelock Gravities(Amer Physical Soc, 2025) Alkac, Goekhan; Guajardo, Luis; Ozsahin, HikmetWe give a microscopic derivation of the semiclassical entropy of static black holes in 3D Lovelock gravities, which are certain 3D Horndeski theories that were recently discovered from higher-dimensional Lovelock gravities via various methods and admit black hole solutions analogous to higher-dimensional ones. Assuming the ground state is described by the soliton obtained from the black hole solution by performing a double Wick rotation, we reproduce the semiclassical entropy from the Cardy formula without central charges for the asymptotic growth of the number of states. We explain in detail how the mass of the soliton, which is needed in the Cardy formula, can be computed in the minisuperspace formalism.