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Riccardo Barbieri (born 1944) is an Italian theoretical physicist and a professor at the Scuola Normale Superiore di Pisa. He has written more than two hundred research papers in the field of theoretical elementary particle physics,〔http://inspirehep.net/author/R.Barbieri.1〕 and has been particularly influential in physics beyond the Standard Model. ==Research career== Riccardo Barbieri received his undergraduate education in 1963-67 at the Scuola Normale Superiore in Pisa and at the University of Pisa. His ''laurea'' advisor was Pietro Menotti. During his Ph.D. (''perfezionamento'') in 1967-69 at the Scuola Normale Superiore and in later years he worked on higher-order radiative corrections in Quantum Electrodynamics with Ettore Remiddi. In the 1970s he turned to computations in Quantum Chromodynamics, collaborating in particular with Raoul Gatto and Zoltan Kunszt. In 1976 at CERN, he made the prediction, later experimentally verified, of the hadronic widths of the three charmonium P-waves. In 1980-82, Riccardo Barbieri was a staff member at the CERN Theory Division. The Standard Model of particle physics by then well established, he started focussing on models beyond the Standard Model, in particular supersymmetry. In 1982, he formulated the first realistic model of mediation of supersymmetry breaking via supergravity. Since 1984 and until now, Riccardo Barbieri has been professor of theoretical physics at Pisa, first at the University of Pisa (1984–97), and then at the Scuola Normale Superiore (1998–present). Some of his most influential results in this period include: * In 1988, the quantitative formulation of the naturalness concept in supersymmetric models. * In 1990, the formulation of a reference parametrization of the quantum corrections to the electroweak precision observables. * In 1995, pointing out the significance of flavour and CP violations in supersymmetric unified theories even in absence of any flavour or CP violation in the input for the soft-supersymmetry breaking parameters. * In 2006, the proposal of a Dark Matter model based on a second Higgs doublet without vacuum expectation value. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Riccardo Barbieri」の詳細全文を読む スポンサード リンク
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