Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
Permanent URI for this collectionhttps://hdl.handle.net/11147/7148
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Conference Object Introduction To Higgs Sector: Theory and Phenomenology(Springer Verlag, 2008) Demir, Durmuş AliThis review is based on lectures delivered at International Summer School on High Energy Physics, in Akyaka, Mugla, Turkey, September 2006. The goal of the review is to introduce junior graduate students, having a some knowledge of field theory, to the problem of mass generation and its physical consequences. The review starts with the statements and a toy model of mass generation in Sect. 2. In Sect. 3 a model of weak interactions is constructed and its predictions are compared with experimental results obtained so far. Given in Sect. 4 is search strategies for Higgs boson, the only remnant of the mechanism that gives mass to matter, by referring to model predictions and experimental facilities. Finally, in Sect. 5, given are a summary of results plus reasons for and expectations from models which rehabilitate the minimal model constructed in Sect. 3.Article Citation - WoS: 14Citation - Scopus: 15Cern Lep Indications for Two Light Higgs Bosons and the U(1)' Model(American Physical Society, 2006) Demir, Durmuş Ali; Solmaz, Levent; Solmaz, SaimeReanalyses of LEP data have shown preference to two light CP-even Higgs bosons. We discuss implications of such a Higgs boson spectrum for the minimal supersymmetric model extended by a standard model singlet chiral superfield and an additional Abelian gauge invariance [the U(1)′ model]. We, in particular, determine parameter regions that lead to two light CP-even Higgs bosons while satisfying existing bounds on the mass and mixings of the extra vector boson. In these parameter regions, the pseudoscalar Higgs is found to be nearly degenerate in mass with either the lightest or next-to-lightest Higgs boson. Certain parameters of the U(1)′ model such as the effective μ parameter are found to be significantly bounded by the LEP two light Higgs signal.Article Citation - WoS: 23Citation - Scopus: 24Signals of Doubly-Charged Higgsinos at the Cern Large Hadron Collider(American Physical Society, 2008) Demir, Durmuş Ali; Frank, Mariana; Huitu, Katri; Rai, Santosh Kumar; Turan, İsmailSeveral supersymmetric models with extended gauge structures, motivated by either grand unification or by neutrino mass generation, predict light doubly-charged Higgsinos. In this work we study productions and decays of doubly-charged Higgsinos present in left-right supersymmetric models, and show that they invariably lead to novel collider signals not found in the minimal supersymmetric model or in any of its extensions motivated by the μ problem or even in extra dimensional theories. We investigate their distinctive signatures at the Large Hadron Collider in both pair- and single-production modes, and show that they are powerful tools in determining the underlying model via the measurements at the Large Hadron Collider experiments. © 2008 The American Physical SocietyArticle Citation - WoS: 3Citation - Scopus: 3Electric Dipole Moments in U(1)' Models(American Physical Society, 2008) Hayreter, Alper; Sabancı, Aslı; Solmaz, Levent; Solmaz, SaimeWe study electric dipole moments of electrons and protons in E(6)-inspired supersymmetric models with an extra U(1) invariance. Compared to the Minimal Supersymmetric Standard Model, in addition to offering a natural solution to the μ problem and predicting a larger mass for the lightest Higgs boson, these models are found to yield suppressed electric dipole moments. © 2008 The American Physical Society.