Browsing by Author "Ozansoy, Aysuhan"

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    A Study On The Search Potentıal of Doubly Charged Leptons At The Sppc Based Ep Colliders
    (Ankara Üniversitesi Fen Fakültesi, 2020-06-30) Ozansoy, Aysuhan; Albayrak, Oğuzhan; Fizik; Fen Fakültesi
    We consider the single production of doubly charged leptons which take part in the extended weak isospin models and have exotic electric charges such as at the SppC based electron-proton (ep) colliders. We introduce the effective lagrangians describing the doubly charged lepton gauge interactions with SM leptons. We calculate the decay widths and production cross sections as a function of doubly charged lepton mass. We deal with the process and plot the kinematical distributions for the final state electron both for the signal and corresponding background. We perform a cut-based analysis to obtain the mass limits and couplings of doubly charged leptons at the SppC based ep colliders with the center-of-mass energies of TeV and TeV.
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    Elektron-pozitron çarpıştırıcılarında spin-3/2 uyarılmış leptonların üretimi ve bozunumu
    (Fen Bilimleri Enstitüsü, 2009) Ozansoy, Aysuhan; Çakır, Orhan
    Bu tezde, spin-3/2 uyarılmış leptonların tek üretimi, gelecek nesil yüksek enerjili elektron-pozitron çarpıştırıcıları ILC (International Linear Collider) ve CLIC (Compact Linear Collider) enerjilerinde incelenmiştir. Uyarılmış leptonlar, kompozit modeller tarafından öngörülen parçacıklardır. En düşük uyarım olarak spin-1/2 uyarılmış leptonlar dikkate alınırken, spin-3/2 uyarılmış leptonlar bir üst uyarım olarak ele alınmıştır. Uyarılmış leptonlar, SM leptonları ve ayar bozonları arasındaki etkileşmeler için etkin lagranjiyen yöntemi kullanılmıştır. Spin-3/2 uyarılmış leptonlar için mümkün bütün bozunma modları incelenmiş ve spin-1/2 uyarılmış leptonun bozunmaları ile karşılaştırılmıştır. Sinyal ile buna karşılık gelen fon olayları dikkate alınmış, son durum gözlenebilir parçacıklar üzerine uygun kinematik sınırlamalar getirilerek ILC ve CLIC’ de uyarılmış leptonların keşfedilme limitleri bulunmuştur.Abstract In this thesis, single production of excited spin-3/2 leptons have been studied at future high energy electron-positron collider ILC (Internaional Linear Collider), and CLIC (Compact Linear Collider) energies. Excited leptons are particles which are suggested by composite models. Spin-1/2 excited leptons are considered as the lowest excitation and spin-3/2 excited leptons are considered as an higher excitation. Effective lagrangian method has been used for the interactions among excited leptons, SM leptons, and gauge bosons. All of the possible decay modes of the excited spin-3/2 leptons have been studied and compared with spin-1/2 excited lepton decay modes. Signal and corresponding backgrounds have been taken into account and discovery limits at ILC and CLIC have been obtained by applying suitable kinematical cuts on the final state detectable particles.
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    FCC physics opportunities: future circular collider conceptual design report volume 1
    (2019) Çakır, Orhan; Yıldız, Hatice Duran; Ozansoy, Aysuhan; Fen Fakültesi; Hızlandırıcı Teknolojileri Enstitüsü
    We review the physics opportunities of the Future Circular Collider, covering its e(+)e(-), pp, ep and heavy ion programmes. We describe the measurement capabilities of each FCC component, addressing the study of electroweak, Higgs and strong interactions, the top quark and flavour, as well as phenomena beyond the Standard Model. We highlight the synergy and complementarity of the different colliders, which will contribute to a uniquely coherent and ambitious research programme, providing an unmatchable combination of precision and sensitivity to new physics.
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    Investigating Doubly Charged Leptons at Future Energy Frontier Muon-Proton Colliders
    (Ankara Üniversitesi Fen Fakültesi, 2019-06-30) Ozansoy, Aysuhan; Fizik; Fen Fakültesi
    We study the doubly charged leptons considered in extended isospin models at muon-proton colliders. We respect the lepton flavor conservation and take into consideration the single production of the doubly charged leptons related to second generation. We give the effective lagrangian describing the doubly charged lepton gauge interactions. We calculate the signal and corresponding background cross sections and analyze the kinematical distributions to obtain the suitable cuts for the discovery. We choose the W-boson hadronic decay channel to get the accessible mass limits and couplings of doubly charged leptons for various muon-proton colliders.