5,934 research outputs found

    On the Chinese Exchange Rate Regime: an Attempt to Flexibility during 2015

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    This study will demonstrate, through an econometric and asset allocation approach, if and how the Chinese exchange rate regime was changing during 2015. Particularly, China to improve its exchange rate formation system implemented, during July and August 2015, three depreciation as a step toward a market-oriented exchange rate. This situation, along with the new right of the RMB to be an international currency in SDR should generate a loss of weight about the USD in the Chinese basket peg. For this reason, moving from Frankel-Wei’s basic econometric model - but with some appropriate changes - our objective is to verify if the Chinese monetary policy about the exchange rate has affected the inner balance of the Chinese basket-peg leading it towards a flexible exchange rate regime

    Looking for anomalous gamma-gamma-H and Z-gamma-H couplings at future linear collider

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    We consider the possibility of studying anomalous contributions to the gamma-gamma-H and Z-gamma-H vertices through the process e-gamma--> e-H at future e-gamma linear colliders, with Sqrt(S)=500-1500 GeV. We make a model independent analysis based on SU(2)xU(1) invariant effective operators of dim=6 added to the standard model lagrangian. We consider a light Higgs boson (mostly decaying in bar(b)-b pairs), and include all the relevant backgrounds. Initial e-beam polarization effects are also analyzed. We find that the process e-gamma--> e-H provides an excellent opportunity to strongly constrain both the CP-even and the CP-odd anomalous contributions to the gamma-gamma-H and Z-gamma-H vertices.Comment: LaTeX, 33 pages, 16 eps figures, extended section

    Measuring the SUSY Breaking Scale at the LHC in the Slepton NLSP Scenario of GMSB Models

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    We report a study on the measurement of the SUSY breaking scale sqrt(F) in the framework of gauge-mediated supersymmetry breaking (GMSB) models at the LHC. The work is focused on the GMSB scenario where a stau is the next-to-lightest SUSY particle (NLSP) and decays into a gravitino with lifetime c*tau_NLSP in the range 0.5 m to 1 km. We study the identification of long-lived sleptons using the momentum and time of flight measurements in the muon chambers of the ATLAS experiment. A realistic evaluation of the statistical and systematic uncertainties on the measurement of the slepton mass and lifetime is performed, based on a detailed simulation of the detector response. Accessible range and precision on sqrt(F) achievable with a counting method are assessed. Many features of our analysis can be extended to the study of different theoretical frameworks with similar signatures at the LHC.Comment: 28 pages, 12 figures (18 eps files). Revised version v2(published in JHEP): Some important corrections and additions to v

    Geometria e progetto. Ipotesi di riuso per il palazzo Vernazza a Castri

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    Dall’Antichità al Rinascimento, da Pitagora a Keplero, aritmetica, geometria, musica e astronomia hanno indagato il numero, lo spazio, il suono e il movimento dei corpi celesti. Queste quattro discipline venivano già pensate e insegnate da Platone come un insieme unitario, che fondeva lo studio degli oggetti matematici con l’aspirazione filosofica al vero, al bello e al bene. Il Quadrivium viene reinterpretato in questo lavoro e l’edificio diviene testimone, testo parlante, memoria scritta in molti linguaggi e restituisce al lettore di oggi un patrimonio un tempo riservato a pochi. Il Palazzo Vernazza di Castri di Lecce è studiato in questa sperimentazione progettuale a partire dalla riscoperta della sua misura storica, con il contributo delle moderne tecniche di rilievo che hanno supportato questi studi, allo scopo di assegnare al progetto contemporaneo una base linguistica invisibile, un alfabeto che strutturi la costruzione del nuovo
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