Yazar "Kara, S. O." seçeneğine göre listele
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Öğe A SEARCH FOR LEPTONIC PHOTON, Z l , AT ALL THREE CLIC ENERGY STAGES BY USING ARTIFICIAL NEURAL NETWORKS (ANN)(Jagiellonian Univ Press, 2024) Kara, S. O.; Akkoyun, S.In this work, the possible dynamics of the massive leptonic photon Z l are reconsidered via the e + e - -> mu + mu - process at the Compact Linear Collider (CLIC) with the updated center-of-mass energies (380, 1500, and 3000 GeV). We show that new generation colliders as CLIC can observe the massive leptophilic vector boson Z l with mass up to the center-ofmass energy, provided that the leptonic coupling constant is g l >= 10 - 3 . In this study, we also estimated the cross sections by artificial neural networks using the theoretical results we obtained for CLIC. According to the results obtained, it was seen that these predictions could be made through machine learning.Öğe An artificial neural network application on nuclear charge radii(IOP PUBLISHING LTD, 2013) Akkoyun, S.; Bayram, T.; Kara, S. O.; Sinan, A.Artificial neural networks (ANN) have emerged with successful applications in nuclear physics as well as in many fields of science in recent years. In this paper, ANN have been employed on experimental nuclear charge radii. Statistical modeling of nuclear charge radii using ANN are seen to be successful. Based on the outputs of ANN we have estimated a new simple mass-dependent nuclear charge radii formula. Also, the charge radii, binding energies and two-neutron separation energies of Sn isotopes have been calculated by implementation of a new estimated formula in Hartree-Fock-Bogoliubov calculations. The results of the study show that the new estimated formula is useful for describing nuclear charge radii.Öğe Consistent Empirical Physical Formulas for Potential Energy Curves of 38-66Ti Isotopes by Using Neural Networks(Pleiades Publishing Inc, 2013) Akkoyun, S.; Bayram, T.; Kara, S. O.; Yildiz, N.Nuclear shape transition has been actively studied in the past decade. In particular, the understanding of this phenomenon from a microscopic point of view is of great importance. Because of this reason, many works have been employed to investigate shape phase transition in nuclei within the relativistic and nonrelativistic mean field models by examining potential energy curves (PECs). In this paper, by using layered feed-forward neural networks (LFNNs), we have constructed consistent empirical physical formulas (EPFs) for the PECs of Ti38-66 calculated by the Hartree-Fock-Bogoliubov (HFB) method with SLy4 Skyrme forces. It has been seen that the PECs obtained by neural network method are compatible with those of HFB calculations.Öğe Excited Muon Searches at the FCC-Based Muon-Hadron Colliders(Hindawi Ltd, 2017) Caliskan, A.; Kara, S. O.; Ozansoy, A.We study the excited muon production at the FCC-based muon-hadron colliders. We give the excited muon decay widths and production cross-sections. We deal with the mu p -> mu(star)q -> mu gamma q process and plot the transverse momentum and normalized pseudorapidity distributions of final state particles to define the kinematical cuts best suited for discovery. By using these cuts, we get the mass limits for excited muons. It is shown that the discovery limits obtained on the mass of mu(star) are 2.2, 5.8, and 7.5 TeV for muon energies of 63, 750, and 1500GeV, respectively.Öğe Photonuclear Reaction Cross Sections for Gallium Isotopes(IOP PUBLISHING LTD, 2015) Akkoyun, S.; Bayram, T.; Kara, S. O.The photon induced reactions which are named as photonuclear reactions have a great importance in many field of nuclear, radiation physics and related fields. The cross-sections of neutron (photo-neutron (gamma,xn)) and proton (photo-proton (gamma,xn)) productions after photon activation have been calculated by using TALYS 1.2 computer code in this study. The target nucleus has been considered gallium which has two stable isotopes, Ga-69 and Ga-71. Furthermore, the pre-equilibrium and compound process contributions to the total cross-section have been investigated.Öğe Single production of the excited electrons in the future FCC-based lepton-hadron colliders(World Scientific Publ Co Pte Ltd, 2018) Caliskan, A.; Kara, S. O.We study the composite electron production at the FCC-based three electron-proton colliders with the center-of-mass energies of 3.46, 10 and 31.6 TeV. For the signal process of ep -> e* X -> e gamma X, the production cross-sections and decay widths of the excited electrons have been calculated. The differences of some kinematical quantities of the final state particles between the signal and background have been analyzed. For this purpose, transverse momentum and pseudorapidity distributions of electron and photon have been obtained and the kinematical cuts for discovery of the excited electrons have been assigned. We have finally determined the mass limits of excited electrons for observation and discovery by applying these cuts. It is shown that the mass limit for discovery obtained from the collider with root s = 31.6 TeV (called PWFA-LC circle times FCC) is 22.3 TeV for the integrated luminosity L-int = 10 fb(-1).
