Rare t-quark decays t→clj+lk−t \to c l_j^{+} l_k^{-}, t→cνj~νkt \to c \tilde{\nu_j} \nu_k in the minimal four color symmetry model

The rare t-quark decays $t \to c l_j^{+} l_k^{-}$, $t \to c \tilde{\nu_j} \nu_k$ via the scalar leptoquark doublets are investigated in the minimal four color symmetry model with the Higgs mechanism of the quark-lepton mass splitting. The partial widths of these decays are calculated and the total width of the charged lepton mode $\Gamma(t \to c {l^{+}}' l^{-})= \sum_{j,k} \Gamma(t \to c l_{j}^{+} l_{k}^{-})$ and the total width of the neutrino mode $\Gamma(t \to c \tilde{\nu}' \nu)= \sum_{j,k} \Gamma(t \to c \tilde{\nu_{j}} \nu_{k})$ are found. The corresponding branching ratios are shown to be $Br(t \to c {l^{+}}' l^{-}) \approx (3.5 - 0.4) 10^{-5},$ $Br(t \to c {\tilde{\nu}}' \nu) \approx (7.1 - 0.8) 10^{-5}$ for the scalar leptoquark masses $m_{S}= 180 - 250 GeV$ and for the appropriate values $(\sin{\beta} \approx 0.2)$ of the mixing angle of the model. The search for such decays at LHC may be of interest.Comment: 18 pages, 2 figures, 1 table, to be published in Modern Physics Letters A; corrected typo

Chiesa di S. Giacomo degli Spagnoli

Tavola di rilievo della Chiesa di San Giacomo degli Spagnoli a Napoli

Esperienze di costruzione di nuovi spazi pubblici - Il caso del centro antico di Napoli

The design experience of the Master Course in Architectural Project for the Historic City is an example of "construction" of a new system of urban spaces in the insula of Largo d'Avellino, an area of great interest in the Historic Centre of Naples. The redesign of this specific insula defines a strategy which involves further "pieces" of the Historic Centre, outlining a wider system of urban textures and architectural connections. The suitable scale for the intervention can be considered the dimension of the whole block with its inner public spaces. The spaces that are thus created, escaping traditional classification - halfway between interior and exterior, roofed and dangerously open, “sudden” and unusual - can be designed as architectural elements, involved in the reconnection of contemporary architectures in the Historic City. These hybrid typologies of open space - covered square, rooftop terrace - combining traditional aspects and new terms, can be maybe considered as first outposts of “contemporaneity” in the Historic City which needs to be accepted and verified

Esperienze di costruzione di nuovi spazi pubblici – Il caso del Centro Antico di Napoli

The design experience of the Master Course in Architectural Project for the Historic City is an example of "construction" of a new system of urban spaces in the insula of Largo d'Avellino, an area of great interest in the Historic Centre of Naples. The redesign of this specific insula defines a strategy which involves further "pieces" of the Historic Centre, outlining a wider system of urban textures and architectural connections. The suitable scale for the intervention can be considered the dimension of the whole block with its inner public spaces. The spaces that are thus created, escaping traditional classification - halfway between interior and exterior, roofed and dangerously open, “sudden” and unusual - can be designed as architectural elements, involved in the reconnection of contemporary architectures in the Historic City. These hybrid typologies of open space - covered square, rooftop terrace - combining traditional aspects and new terms, can be maybe considered as first outposts of “contemporaneity” in the Historic City which needs to be accepted and verified