118,447 research outputs found
On exclusive h→Vl+l− decays
No full textWe study a set of exclusive decay modes of the Standard Model Higgs boson into a vector meson and a dilepton pair: h→Vl+l−, with V=Υ,J/ψ,φ, and l=μ,τ, determining the decay rates, the dilepton mass spectra and the V longitudinal helicity fraction distributions. In the same framework, we analyze the exclusive modes into neutrino pairs View the MathML source. We also discuss the implications of the recent CMS and ATLAS results for the lepton flavor-changing process h→τ+μ− on the h→Vτ+μ− decay mode
I controlli della Commissione Europea e della Corte dei conti europea sui fondi del PNRR: verso una nuova declinazione di un sistema multilivello dei controlli orientato alla performance
No full textCol presente lavoro ci si è incentrati sul nuovo paradigma di controllo previsto dal Dispositivo, che si è riverberato oltre che sui controlli posti in essere dalla Commissione europea, anche sul controllo della Corte dei conti europea, portandola a riorientare i propri audit intorno a una metodologia capace di mettere in evidenza la correlazione tra il mancato o parziale raggiungimento dei milestone e dei target e l’impatto finanziario che esso produce. Il Dispositivo dà vita, infatti, ad un sistema di controlli dalle caratteristiche ad hoc, in parte disciplinato in modo chiaro, in parte “in cerca di definizione”, nonostante il Dispositivo riconosca i controlli quali elementi fondamentali nel percorso verso il rilancio e la ripresa non solo dei sistemi economici e sociali degli Stati membri, ma anche dell’intera Unione. Preme evidenziare che il Recovery and Resilience Facility ha segnato uno spill-over dal tradizionale modello dei fondi di coesione verso un nuovo paradigma. Cosicché tale “salto di specie” , una volta positivizzati gli aspetti salienti del nuovo modello e ridefiniti compiutamente gli equilibri istituzionali, potrebbe generare nel lungo periodo una proficua “contaminazione”, volta a rafforzare la tradizionale e fondamentale funzione dei fondi europei, ovvero la crescita dell’Unione
Luigi Orsini e il verso libero
No full textAnalisi della produzione poetica di Luigi Orsini, e ricostruzione del contesto letterario e culturale nel quale il saggista, conferenziere e poeta imolese ha operato tra le due guerre
Connections between ε′/ε and rare kaon decays in supersymmetry
No full textWe analyze the rare kaon decays K-L --> pi(0)v (v) over bar, K+ --> pi(+) v (v) over bar, K-L --> pi(0)e(+)e(-) and K-L --> mu(+)mu(-) in conjunction with the CP-violating ratio epsilon'/epsilon in a general class of supersymmetric models in which Z- and magnetic-penguin contributions can be substantially larger than in the Standard Model. We point out that radiative effects relate the double left-right mass insertion to the single left-left one, and that the phenomenological constraints on the latter reflect into a stringent bound on the supersymmetric contribution to the Z penguin. Using the bound, and those coming from recent data on epsilon(+)/epsilon(-), we find BR(K-L --> pi(0)v (v) over bar) less than or equal to 1.2 x 10(-10), BR(K+ --> pi+v (v) over bar) less than or equal to 1.7 x 10(-10), BR(K-L --> pi(0)epsilon(+)epsilon(-))(dir) less than or similar to 2.0 x 10(-11), assuming the usual determination of the CKM parameters and neglecting the possibility of cancellations among different supersymmetric effects in epsilon(+)epsilon(-). Larger values are possible, in principle, but rather unlikely. We stress the importance of a measurement of these three branching ratios, together with improved data and improved theory of a epsilon'/epsilon, in order to shed light on the realization of various supersymmetric scenarios. We reemphasize that the most natural enhancement of epsilon'/epsilon, within supersymmetric models, comes from chromomagnetic penguins and show that in this case sizable enhancements of BR(K-L --> pi(0)e(+) e(-))(dir) can also be expected. (C) 2000 Elsevier Science B.V. All rights reserved
Misurare l’interminabile. Blanchot, Kaplan e la “fabbrica”
No full textL'articolo discute la lettura offerta da M. Blanchot dello scritto di L. Kaplan "L'eccesso, la fabbrica", rilevandone gli aspetti pratico-morali e politic
Dei "luoghi sdrucciolevoli", e di un testamento di nascita
No full textL'articolo affronta i temi della responsabilità e della sopravvivenza in due testi di Gabriele Frasca e di Dionys Mascol
Semi-analytical model for heat and mass transfer evaluation of vapor bubbling
No full textMulti-stage refrigeration systems cover a wide range of possibilities and are diffusing more and more. The idea that inspired this work derived from the need to have a tool to model the energy behavior of the intercooler inside a multi-stage refrigeration system. In this work, a semi-analytical model of a single bubble, injected into the liquid of an intercooler of a multi-stage system, has been developed. The developed model is a set of equations derived from the Fourier equation for heat conduction in defined conditions and includes the effects of sensible and latent heat. The vapor bubble is supposed to be injected in the saturated liquid contained in a tank at a defined depth, at an intermediate pressure. The model has been implemented in Matlab and the results show the influence of the liquid surface tension, the injection depth and the thermal diffusivity of the vapor. The model developed here is a useful low-cost tool for evaluating heat transfer optimization of a separator/intercooler of a multi-stage refrigeration system
L'insediamento fortificato di Satrianum in età angioina. Fonti, strutture materiali e documenti archeologici di un centro di potere nella Valle del Melandro (PZ), in F. Sogliani, M. Osanna, L. Colangelo, A. Parente, Gli spazi del potere civile e religioso dell'insediamento fortificato di Torre di Satriano in età angioina
No full textThe medieval fortified settlement of Satriano (Potenza) has been studied from 2005, due to a huge and intense archaeological investigation headed by the School of Specialization in Archaeology of Matera, under a large project sponsored by the Region of Basilicata and the Municipality of Tito (PZ). It represents an “Archaeology of power" case-study, particularly significant for its structural characteristics, its location and the impressive articulation of its planimetric organization.
With the recent widespread program of archaeological researches it was possible to comprehend the development of different phases in the chronological sequence, form the site sorted out to establish a structured system of territorial defence and control by the Normans (the first written sources date back to the end of XIIth century) to its desertion in post-medieval era. In the settlement it is possible to recognize an upper area, on the top of the hill, enclosed by walls, as the hierarchically most important space, including inside the seat of civil power - the big square tower – as the one of its' religious authority - the “Cathedral” and the fortified village developed on the slopes of the hill. Considerable seems to be the archaeological evidences related to the Angevin period, whose demographic situation registers an increase of “fuochi” from 151 to 224 in the second half of the XIIIth century. In this period the Cathedral was restored and in the cemetery of the religious area we observe an implementation of the richest tombs. The settlement was abandoned in the last decades of the XVth century, after the strong economic crisis of XIVth and XVth century, which will have serious consequences on the human settlement in the region of Basilicata. On the contrary, some sources testifies that the diocesan seat moved from Satriano to Campagna only in 1525. It is possible that even after the desertion of the medieval settlement, the Cathedral dedicated to St. Stephen, probably affected by some restoration activities, still play an important role in the territory, going on to celebrate the major religious solemnities
Antitrust, regolazione ed incertezza scientifica: riflessioni a margine della sentenza del Consiglio di Stato nel caso Avastin-Lucentis
No full textLa nota ha ad oggetto la sentenza del Consiglio di Stato, sez. VI, N. 4990 del 15 luglio 2019, nel caso Avastin/Lucentis. Il Consiglio di Stato ha stabilito che: «(...) [I]l comportamento di due imprese che commercializzano due medicinali concorrenti, avente ad oggetto la diffusione di informazioni ingannevoli sugli effetti collaterali negativi dell’uso di uno di tali medicinali per indicazioni non coperte dall’AIC di quest’ultimo, al fine di ridurre la pressione concorrenziale derivante da tale uso su un altro medicinale coperto da un’AIC per dette indicazioni, integra una restrizione della concorrenza «per oggetto», concretandosi in un’illecita ripartizione del mercato (...)»
- …
