Results for "M. Antonelli"

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Vus Measurement and CKM unitarityOct 24 2006We review recent measurements of kaon decays and lifetimes for the determination of the CKM element Vus. Their relevance to CKM matrix unitarity is discussed.
Searches for new particles at LEP: a summary reportJun 28 2001We review the progress made at LEP in the quest for new particles.
Global Existence of Finite Energy Weak Solutions of Quantum Navier-Stokes EquationsMay 11 2016Jun 02 2016In this paper we consider the Quantum Navier-Stokes system both in two and in three space dimensions and prove global existence of finite energy weak solutions for large initial data. In particular, the notion of weak solutions is the standard one. This ... More
On the compactness of finite energy weak solutions to the quantum Navier-Stokes equationsDec 23 2015May 12 2016We consider the Quantum Navier-Stokes system in three space dimensions. We prove compactness of finite energy weak solutions for large initial data. The main novelties are that vacuum regions are included in the weak formulation and no extra terms, like ... More
The flat X-ray spectrum of the LINER NGC1052Dec 21 1998We report on ROSAT and ASCA observations of the LINER NGC1052, which is the first one where broad optical lines in polarized light have been observed. The 2-10 keV spectrum is very flat, with an observed photon index (Gamma) ~0.1. A model where a nuclear ... More
A computational study of the configurational and vibrational contributions to the thermodynamics of substitutional alloys: the Ni3Al caseSep 16 2009We have developed a methodology to study the thermodynamics of order-disorder transformations in n-component substitutional alloys that combines nonequilibrium methods, which can efficiently compute free energies, with Monte Carlo simulations, in which ... More
The resummed thrust distribution in DISOct 14 1999We present preliminary results on the resummation of leading and next-to-leading logarithms for the thrust distribution in deep inelastic scattering. Our predictions, expanded to O(alpha_s^2), are compared to corresponding results from the Monte Carlo ... More
Statistics of temperature fluctuations in a buoyancy dominated boundary layer flow simulated by a Large-eddy simulation modelFeb 18 2002Temperature fluctuations in an atmospheric convective boundary layer are investigated by means of Large Eddy Simulations (LES). A statistical characterization for both weak temperature fluctuations and strong temperature fluctuations has been found. Despite ... More
The role of mass, equation of state and superfluid reservoir in large pulsar glitchesSep 20 2018Nov 09 2018Observations of pulsar glitches provide useful insights on the internal physics of neutron stars: recent studies show how it is in principle possible to constrain pulsar masses from observations of their timing properties. We present a generalisation ... More
Nonlinear Maxwell-Schroedinger system and Quantum Magneto-Hydrodynamics in 3DFeb 02 2017Motivated by some models arising in quantum plasma dynamics, in this paper we study the Maxwell-Schr\"odinger system with a power-type nonlinearity. We show the local well-posedness in $H^2(\mathbb{R}^3)\times H^{3/2}(\mathbb{R}^3)$ and the global existence ... More
Precision Measurement of KS Meson Lifetime with the KLOE detectorNov 11 2010Nov 20 2010Using a large sample of pure, slow, short lived K0 mesons collected with KLOE detector at DaFne, we have measured the KS lifetime. From a fit to the proper time distribution we find tau = (89.562 +- 0.029_stat +- 0.043_syst) ps. This is the most precise ... More
Novel proposal for a low emittace muon beam using positron beam on targetSep 15 2015Muon beams are customarily obtained via $K/\pi$ decays produced in proton interaction on target. In this paper we investigate the possibility to produce low emittance muon beams from electron-positron collisions at centre-of-mass energy just above the ... More
Neutrino mass parameters from Kamland, SNO and other solar evidenceDec 15 2002Aug 01 2003An updated analysis of all available neutrino oscillation evidence in Reactor (Kamland, first 145 days of data) and Solar experiments (SK day and night spectra, global rates from Homestake, SAGE and GALLEX) including the $SNO CC$ and $NC$ data is presented. ... More
Theoretical Study of Cubic Structures Based on Fullerene Carbon Clusters: C$_{28}$C and (C$_{28})_{2}$Feb 13 1995We study a new hypothetical form of solid carbon \csc, with a unit cell which is composed of the \cs \ fullerene cluster and an additional single carbon atom arranged in the zincblende structure. Using {\it ab initio} calculations, we show that this new ... More
An enigmatic long-lasting gamma-ray burst not accompanied by a bright supernovaAug 15 2006Jan 28 2007Gamma-ray bursts (GRBs) are short, intense flashes of soft gamma-rays coming from the distant Universe. Long-duration GRBs (those lasting more than ~2 s) are believed to originate from the deaths of massive stars, mainly on the basis of a handful of solid ... More
On the hypothesis of an advection-dominated flow in the core of NGC 1052: new constraints from a BeppoSAX observationNov 17 2000We report the results of a broadband (0.1-100 keV) X-ray observation of the nearby elliptical galaxy NGC1052, performed with the BeppoSAX observatory. We confirm the presence of a bright (2-10 keV luminosity ~ 4 x 10^{42} erg/s) and strongly absorbed ... More
The Neutrino mass matrix after Kamland and SNO salt enhanced resultsSep 15 2003An updated analysis of all available neutrino oscillation evidence in Solar experiments including the latest SNO ES,CC and NC data (254d live time, NaCL enhanced efficiency) is presented. We obtain, for the fraction of active oscillating neutrinos: sin^2alpha=(\Phi_{NC}-\Phi_{CC})/(\Phi_{SSM}-\Phi_{CC})=0.94^{+0.0.065}_{-0.060} ... More
Phenomenological implication of KamLAND on lepton mass matricesMay 15 2003May 15 2003By using a model independent Monte Carlo approach, we study the possible structure of charged and neutral lepton mass matrices, under the assumption of an U(2) horizontal symmetry (additional to the usual Standard Model ones) involving the light fermion ... More
Hamevol1.0: a C++ code for differential equations based on Runge-Kutta algorithm. An application to matter enhanced neutrino oscillationJul 23 2003We present a C++ implementation of a fifth order semi-implicit Runge-Kutta algorithm for solving Ordinary Differential Equations. This algorithm can be used for studying many different problems and in particular it can be applied for computing the evolution ... More
Neutrino masses and non abelian horizontal symmetriesJul 29 2002Nov 06 2002Recent neutrino experiments have made very significant progresses and our knowledge of neutrino masses and mixing has considerably improved. In a model independent Monte Carlo approach, we have examined a very large class of textures, in the context of ... More
Global analysis of Solar neutrino oscillation evidence including SNO and implications for BorexinoNov 29 2001Apr 19 2002An updated analysis of all available neutrino oscillation evidence in Solar experiments including the latest $SNO$ data is presented. Predictions for total rates and day-night asymmetry in Borexino are calculated. Our analysis features the use of exhaustive ... More
The Physics of $K^0 -\bar K^0$ Mixing: $\widehat{B}_K$ and $Δ M_{LS}$ in the Chiral Quark ModelOct 03 1996Feb 24 1997We compute the $\widehat B_K$ parameter and the mass difference $\Delta M_{LS}$ of the $K^0-\bar K^0$ system by means of the chiral quark model. The chiral coefficients of the relevant $\Delta S=2$ and $\Delta S=1$ chiral lagrangians are computed via ... More
KamLAND potentiality on the determination of Neutrino mixing parameters in the post SNO-NC eraJul 29 2002Jul 31 2002We study in detail the power of the reactor experiment kamLAND for discriminating existing solutions to the SNP and giving accurate information on neutrino masses and mixing angles. Assuming the expected signal corresponding to various ``benchmark'' points ... More
Solar neutrino experiments and Borexino perspectivesDec 06 2001We present an updated analysis of all the data available about solar neutrinos, including the charged current SNO results. The best fit of the data is obtained in the Large Mixing Angle region, but different solutions are still possible. We also study ... More
Fetus: the radar of maternal stress, a cohort studyFeb 26 2019Objective: We hypothesized that prenatal stress (PS) exerts lasting impact on fetal heart rate (fHR). We sought to validate the presence of such PS signature in fHR by measuring coupling between maternal HR (mHR) and fHR. Study design: Prospective observational ... More
KamLAND, solar antineutrinos and their magnetic momentAug 09 2002We investigate the possibility of detecting solar antineutrinos with the KamLAND experiment. These antineutrinos are predicted by spin-flavor oscillations at a significant rate even if this mechanism is not the leading solution to the SNP. The recent ... More
The $ΔI = 1/2$ Selection RuleNov 16 1995May 27 1996We compute the isospin $I= 0$ and 2 amplitudes for the decay of a kaon into two pions by estimating the relevant hadronic matrix elements in the chiral quark model. The results are parametrized in terms of the quark and gluon condensates and of the constituent ... More
Characterization of Ulrich bundles on Hirzebruch surfacesJun 27 2018In this work we characterize Ulrich bundles of any rank on polarized rational ruled surfaces over $\mathbb{P}^1$. We show that every Ulrich bundle admits a resolution in terms of line bundles. Conversely, given an injective map between suitable totally ... More
Discussion about the orthopositronium decay rate and analysis of some $O(α^2)$ contributionsJul 29 1998I consider the problem of the evaluation of the orthopositronium decay rate, including second order radiative corrections. I present a brief theoretical discussion of this problem and a review of the results available in literature, and, then, I analyze ... More
Precision tests of Standard Model with leptonic and semileptonic kaon decaysDec 05 2007Dec 11 2007Till the middle of 2004 it appeared that the unitarity relation Vud^2+Vus^2+Vub^2=1 might not hold at the 2.3sigma level. At that time, however, Vus was inferred from old experimental data. Since then, a large experimental and theoretical effort has been ... More
The importance of the adiabatic index in modeling strains and stresses in spinning-down pulsarsSep 23 2018Mar 12 2019We introduce a Newtonian model for the deformations of a compressible neutron star that goes beyond the widely used Cowling approximation. We employ this model to study the role played by the adiabatic index in the calculation of rotation-induced deformations: ... More
An Analysis of Anomaly Cancellation for Theories in D=10Jul 21 2015We prove that the swampland for D=10 N=1 SUGRA coupled to D=10 N=1 SYM is only populated by U(1)^496 and E_8 x U(1)^248. With this goal in mind, we review the anomalies for classical and exceptional groups, retrieving trace identities up to the sixth ... More
Incompressible analytical models for spinning-down pulsarsFeb 17 2019We study a class of Newtonian models for the deformations of non-magnetized neutron stars during their spin-down. The models have all an analytical solution, and thus allow to understand easily the dependence of the strain on the star's main physical ... More
Radiative phi decaysSep 25 2002Sep 26 2002Radiative phi decays give us an excellent opportunity to study scalar and pseudoscalar meson below 1 GeV. In this paper, results from different experiments are reviewed and compared.
The Wigner-Lohe model for quantum synchronization and its emergent dynamicsFeb 13 2017We present the Wigner-Lohe model for quantum synchronization which can be derived from the Schr\"{o}dinger-Lohe model using the Wigner formalism. For identical one-body potentials, we provide a priori sufficient framework leading the complete synchronization, ... More
The two-component jet of GRB 080413BDec 01 2010The quick and precise localization of GRBs by the Swift telescope allows the early evolution of the afterglow light curve to be captured by ground-based telescopes. With GROND measurements we can investigate the optical/near-infrared light curve of the ... More
A large annotated medical image dataset for the development and evaluation of segmentation algorithmsFeb 25 2019Semantic segmentation of medical images aims to associate a pixel with a label in a medical image without human initialization. The success of semantic segmentation algorithms is contingent on the availability of high-quality imaging data with corresponding ... More
Study of the performance of the NA62 Small-Angle Calorimeter at the DA$Φ$NE LinacOct 12 2016The measurement of $BR(K^+\to\pi^+\nu\bar{\nu})$ with 10% precision by the NA62 experiment requires extreme background suppression. The Small Angle Calorimeter aims to provide an efficient veto for photons flying at angles down to zero with respect to ... More
Absorption in Gamma Ray Burst afterglowsMar 05 2004We studied the X-ray and optical absorption properties of 13 Gamma Ray Burst (GRB) afterglows observed by BeppoSAX. We found that X-ray absorption in addition to the Galactic one along the line of sight is highly statistically significant in the two cases ... More
The X-ray spectrum and variability of the Seyfert 2 Galaxy NGC7172Mar 13 1998We present evidence of flux variability, on both short (hours) and long (months) time scales of the Seyfert 2 galaxy NGC 7172. These results are based on the ASCA observation of NGC 7172 performed on May 1996. The source was detected at a rather low flux ... More
A broadband X-ray view of NGC4945Jan 31 2000We present the results of a BeppoSAX observation of the nearby spiral galaxy NGC4945 in the 0.1-200 keV energy band. The nuclear X-ray emission emerges above ~7 keV, through an absorber with column density N_H ~ a few 10^24/cm/cm. Its remarkable variability ... More
Solving the solar neutrino problem with kamLAND and BOREXINOMay 07 2002We analyze the expected signals of two future neutrino experiments, kamLAND and BOREXINO. We show that with just these experiments, we will hopefully be able to determine which of the existing solutions to the solar neutrino problem is the real solution. ... More
Finite temperature molecular dynamics study of unstable stacking fault free energies in siliconAug 18 1998Aug 19 1998We calculate the free energies of unstable stacking fault (USF) configurations on the glide and shuffle slip planes in silicon as a function of temperature, using the recently developed Environment Dependent Interatomic Potential (EDIP). We employ the ... More
GRB environment properties through X and optical afterglow observationsJun 20 2005We present the spectral analysis of 14 gamma-ray bursts (GRB) X-ray afterglows in order to investigate the properties of interstellar matter (ISM) along the line of sight of GRB. We carried out a simultaneous analysis of the NIR-optical and X-band for ... More
Analysis of X-ray flares in GRBsOct 17 2006We present a detailed study of the spectral and temporal properties of the X-ray flares emission of several GRBs. We select a sample of GRBs which X-ray light curve exhibits large amplitude variations with several rebrightenings superposed on the underlying ... More
After Sno and Before Kamland: Present and Future of Solar and Reactor Neutrino PhysicsNov 05 2002We present a short review of the existing evidence in favor of neutrino mass and neutrino oscillations which come from different kinds of experiments. We focus our attention in particular on solar neutrinos, presenting a review of some recent analysis ... More
Extinction properties of the X-ray bright/optically faint afterglow of GRB 020405Jun 17 2005We present an optical-to-X-ray spectral analysis of the afterglow of GRB 020405. The optical spectral energy distribution not corrected for the extragalactic extinction is significantly below the X-ray extrapolation of the single powerlaw spectral model ... More
The $ΔS = 1$ Weak Chiral Lagrangian as the Effective Theory of the Chiral Quark ModelNov 07 1995Jun 11 1996We use the chiral quark model to estimate the coefficients of the weak chiral lagrangian as obtained from the bosonization of the ten relevant operators of the $\Delta S = 1$ effective quark lagrangian. All contributions of order $N_c^2$ as well as $N_c$ ... More
Analysis of Neutrino oscillation data with the recent KamLAND resultsJun 16 2004Jun 17 2004We present an updated analysis of all available solar and reactor neutrino data, emphasizing in particular the totality of the KamLAND results and including the SNO phase III spectrum data. In a two active-neutrino framework, we determine the solutions ... More
The solar neutrino puzzle: present situation and future scenariosJun 28 2002We present a short review of the existing evidence in favor of neutrino mass and neutrino oscillations which come from different kinds of experiments. We focus our attention in particular on solar neutrinos, presenting a global updated phenomenological ... More
Determination of Neutrino mixing parameters after SNO oscillation evidenceMay 06 2002May 14 2002An updated analysis of all available neutrino oscillation evidence in Solar experiments (SK day and night spectra, global rates from Homestake, SAGE and GALLEX) including the latest SNO CC and NC data is presented. Assuming that the shape of the SNO CC ... More
Microglial memory of early life stress, epigenetic mechanisms and susceptibility to neurodegeneration in adulthoodJan 01 2019In this review we present a concept that, despite mounting evidence, received little attention so far: susceptibility to adult neurodegenerative diseases may be programmed in utero and early postnatal preventive measures may reduce the risk. We delineate ... More
A global fit to determine the pseudoscalar mixing angle and the gluonium content of the eta' mesonJun 20 2009We update the values of the eta-eta' mixing angle and of the eta' gluonium content by fitting our measurement R_phi = BR(phi to eta' gamma)/ BR(phi to eta gamma) together with several vector meson radiative decays to pseudoscalars (V to P gamma), pseudoscalar ... More
Semi-analytical approaches to study hot electrons in the shock ignition regimeNov 14 2018Hot electrons role in shock generation and energy deposition to hot dense core is crucial for the shock ignition scheme implying the need for their characterization at laser intensities of interest for shock ignition. In this paper we analyze the experimental ... More
Axially symmetric equations for differential pulsar rotation with superfluid entrainmentMar 09 2016Aug 10 2016In this article we present an analytical two-component model for pulsar rotational dynamics. Under the assumption of axial symmetry, implemented by a paraxial array of straight vortices that thread the entire neutron superfluid, we are able to project ... More
Advancements in solar neutrino physicsApr 23 2013We review the results of solar neutrino physics, with particular attention to the data obtained and the analyses performed in the last decades, which were determinant to solve the solar neutrino problem (SNP), proving that neutrinos are massive and oscillating ... More
Impact on Astrophysics and Elementary Particle Physics of recent and future solar neutrino dataNov 11 2013The study of neutrinos is fundamental to connect astrophysics and elementary particle physics. In this last decade solar neutrino experiments and KamLAND confirmed the LMA solution and further clarified the mass and oscillation pattern. Borexino attacked ... More
A Bayesian semiparametric framework for causal inference in high-dimensional dataMay 13 2018Dec 15 2018We introduce a Bayesian framework for estimating causal effects of binary and continuous treatments in high-dimensional data. The proposed framework extends many of the existing semiparametric estimators introduced in the causal inference literature to ... More
3D network modelling of fracture processes in fibre-reinforced geomaterialsApr 03 2018Aug 22 2018The width of fracture process zones in geomaterials is commonly assumed to depend on the type of heterogeneity of the material. Still, very few techniques exist, which link the type of heterogeneity to the width of the fracture process zone. Here, fracture ... More
Stochastic sampling of the isothermal-isobaric ensemble: phase diagram of crystalline solids from molecular dynamics simulationJun 28 2018A methodology to sample the isothermal-isobaric ensemble using Langevin dynamics is proposed, which combines novel features of geometric integrators for the equations of motion. By employing the Trotter expansion, the methodology generates a robust, symmetric ... More
A model of synchronization over quantum networksJan 31 2017We investigate a non-Abelian generalization of the Kuramoto model proposed by Lohe and given by $N$ quantum oscillators ("nodes") connected by a quantum network where the wavefunction at each node is distributed over quantum channels to all other connected ... More
Gamma-ray burst observations with new generation imaging atmospheric Cerenkov Telescopes in the FERMI eraJan 12 2009After the launch and successful beginning of operations of the FERMI satellite, the topics related to high-energy observations of gamma-ray bursts have obtained a considerable attention by the scientific community. Undoubtedly, the diagnostic power of ... More
Pulsar rotation with superfluid entrainmentJun 06 2017Large pulsar glitches (like the ones detected in the Vela) are though to be a consequence of the superfluid component present in the interior of mature neutron stars. However strong entrainment challenges this picture. We study the impact of entrainment ... More
Global well-posedness for cubic NLS with nonlinear dampingMay 18 2009Nov 24 2009We study the Cauchy problem for the cubic nonlinear Schroedinger equation, perturbed by (higher order) dissipative nonlinearities. We prove global in-time existence of solutions for general initial data in the energy space. In particular we treat the ... More
Spike-and-Slab Group Lassos for Grouped Regression and Sparse Generalized Additive ModelsMar 05 2019Mar 10 2019We introduce the spike-and-slab group lasso (SSGL) for Bayesian estimation and variable selection in linear regression with grouped variables. We further extend the SSGL to sparse generalized additive models (GAMs), thereby introducing the first nonparametric ... More
On the Finite Energy Weak Solutions to a System in Quantum Fluid DynamicsFeb 06 2008In this paper we consider the global existence of weak solutions to a class of Quantum Hydrodynamics (QHD) systems with initial data, arbitrarily large in the energy norm. These type of models, initially proposed by Madelung, have been extensively used ... More
Computing the Shattering Coefficient of Supervised Learning AlgorithmsMay 07 2018May 14 2018The Statistical Learning Theory (SLT) provides the theoretical guarantees for supervised machine learning based on the Empirical Risk Minimization Principle (ERMP). Such principle defines an upper bound to ensure the uniform convergence of the empirical ... More
The electrostatic limit for the 3D Zakharov systemOct 17 2016We consider the vectorial Zakharov system describing Langmuir waves in a weakly magnetized plasma. In its original derivation the evolution for the electric field envelope is governed by a Schr\"odinger type equation with a singular parameter which is ... More
Existence of solitary waves in dipolar quantum gasesOct 28 2009Oct 19 2010We study a nonlinear Schroedinger equation arising in the mean-field description of dipolar quantum gases. Under the assumption of sufficiently strong dipolar interactions, the existence of standing waves, and hence solitons, is proved together with some ... More
Global existence of weak solutions to the Navier-Stokes-Korteweg equationsMar 05 2019In this paper we consider the Navier-Stokes-Korteweg equations for a viscous compressible fluid with capillarity effects in three space dimensions. We prove global existence of finite energy weak solutions for large initial data. Contrary to previous ... More
From MAGIC to CTA: the INAF participation to Cherenkov Telescopes experiments for Very High Energy AstrophysicsJun 26 2008The next decade can be considered the "golden age" of the Gamma Ray Astronomy with the two satellites for Gamma Ray Astronomy (AGILE and GLAST) in orbit. Therefore, thanks to many other X-ray experiments already in orbit (e.g. Swift, Chandra, NewtonXMM, ... More
Supersymmetric hadronic bound state detection at $e^+e^-$ collidersJun 29 1999Jun 30 1999We review the possibility of formation for a bound state made out of a stop quark and its antiparticle. The detection of a signal from its decay has been investigated for the case of a $e^+e^-$ collider.
Nonequilibrium free energy methods applied to magnetic systems: the degenerate Ising modelSep 07 2018In this paper, we review the physical concepts of the nonequilibrium techniques for the calculation of free energies applied to magnetic systems using Monte Carlo simulations of different nonequilibrium processes. The methodology allows the calculation ... More
The Quantum Hydrodynamics system in two space dimensionsNov 20 2010In this paper we study global existence of weak solutions for the Quantum Hydrodynamics System in 2-D in the space of energy. We do not require any additional regularity and/or smallness assumptions on the initial data. Our approach replaces the WKB formalism ... More
On the compactness of weak solutions to the Navier-Stokes-Korteweg equations for capillary fluidsAug 10 2018In this paper we consider the Navier-Stokes-Korteweg equations for a viscous compressible fluid with capillarity effects in three space dimensions. We prove compactness of finite energy weak solutions for large initial data. In contrast with previous ... More
GRAWITA: VLT Survey Telescope observations of the gravitational wave sources GW150914 and GW151226Oct 16 2017We report the results of deep optical follow-up surveys of the first two gravitational-wave sources, GW150914 and GW151226, done by the GRAvitational Wave Inaf TeAm Collaboration (GRAWITA). The VLT Survey Telescope (VST) responded promptly to the gravitational-wave ... More
Embedding a chaotic signature in a periodic train: can periodic signals be chaotic?Nov 03 2008Dec 11 2008We show how a chaotic system can be locked to emit a periodic waveform belonging to its chaotic attractor. We numerically demonstrate our idea in a system composed of a semiconductor laser driven to chaos by optical feedback from a short external cavity. ... More
Ultralow and Anisotropic Thermal Conductivity in Semiconductor As2Se3Oct 06 2017Dec 15 2017An ultralow lattice thermal conductivity of 0.14 W$\cdot$ m$^{-1} \cdot$ K$^{-1}$ along the $\vec b$ axis of As$_2$Se$_3$ single crystals was obtained at 300 K by first-principles calculations involving the density functional theory and the resolution ... More
The BeppoSAX WFC X-ray source catalogueJul 19 2007Aug 02 2007We present the catalogue of X-ray sources detected by the two Wide Field Cameras (WFCs) in complete observations on board BeppoSAX during its 6 years of operational lifetime, between April 1996 and April 2002. The BeppoSAX WFCs were coded mask instruments ... More
The X-ray afterglow of GRB 081109A: clue to the wind bubble structureMar 26 2009Aug 17 2009We present the prompt BAT and afterglow XRT data of Swift-discovered GRB081109A up to ~ 5\times 10^5 sec after the trigger, and the early ground-based optical follow-ups. The temporal and spectral indices of the X-ray afterglow emission change remarkably. ... More
Measurement of the slope parameter αfor the η\to 3π^0 decay at KLOEJul 27 2007We report a preliminary measurement of the slope parameter $\alpha$ for the $\eta\to 3\piz$ decay carried out with KLOE at DA$\Phi$NE; where $\alpha$ is the parameter describing the energy dependence of the square of the matrix element for this decay. ... More
The solution to a multichannel Bethe potential and its application to pion-nucleus reactionsJul 22 1997Mar 17 1998We solve a radial Schr\"odinger equation for the case of a multichannel square well plus an exponential potential in one of the channels. The solution is obtained by summing exactly the infinite terms of the perturbative series for the evolution operator ... More
Determination of $η\toπ^+π^-π^0$ Dalitz plot slopes and asymmetries with the KLOE detectorJan 17 2008Mar 10 2008We have studied, with the KLOE detector at the DA$\Phi$NE $\Phi$-Factory, the dynamics of the decay $\eta\to\pi^+\pi^-\pi^0$ using $\eta$ mesons from the decay $\phi\to\eta\gamma$ for an integrated luminosity ${\mathcal L}$ = 450 pb$^{-1}$. From a fit ... More
Positron driven muon source for a muon colliderMay 14 2019May 19 2019The design of a future multi-TeV muon collider needs new ideas to overcome the technological challenges related to muon production, cooling, accumulation and acceleration. In this paper a layout of a positron driven muon source known as the Low EMittance ... More
Statistically improved Analysis of Neutrino Oscillation Data with the latest KamLAND resultNov 07 2005Nov 11 2005We present an updated analysis of all available solar and reactor neutrino data, emphasizing in particular the totality of the KamLAND (314d live time) results and including for the first time the solar $SNO$ (391d live time, phase II NaCl-enhanced) spectrum ... More
GRB 990704: the most X-ray rich BeppoSAX gamma-ray burstAug 27 2001We present the X- and $\gamma$-ray detection of GRB 990704 and the discovery and study of its X-ray afterglow, 1SAX J1219.5-0350. Two pointed BeppoSAX observations with the narrow field instruments were performed on this source, separated in time by one ... More
The X-ray afterglow of GRB000926 observed by BeppoSAX and Chandra: a mildly collimated fireball in a dense medium ?Mar 20 2001Apr 18 2001We present X-ray observations of the afterglow of GRB000926 performed around and after the break observed in the optical light curve two days after the burst. The steep X-ray light curve observed around the break confirms the presence of this feature ... More
The BeppoSAX catalog of GRB X-ray afterglow observationsJul 29 2005We present the X-ray afterglow catalog of BeppoSAX from the launch of the satellite to the end of the mission. Thirty-three X-ray afterglows were securely identified based on their fading behavior out of 39 observations. We have extracted the continuum ... More
A comparative study of the X-ray afterglow properties of optically bright and dark GRBsDec 12 2002Dec 13 2002We have examined the complete set of X-ray afterglow observations of dark and optically bright GRBs performed by BeppoSAX until February 2001. X-ray afterglows are detected in 90% of the cases. We do not find significant differences in the X-ray spectral ... More
Beyond similarity: A network approach for identifying and delimiting biogeographical regionsOct 11 2014Biogeographical regions (geographically distinct assemblages of species and communities) constitute a cornerstone for ecology, biogeography, evolution and conservation biology. Species turnover measures are often used to quantify biodiversity patterns, ... More
Asymptotic behavior of nonlinear Schroedinger Systems with Linear CouplingMar 26 2013Jun 26 2013A system of two coupled nonlinear Schroedinger equations is treated. In addition, a linear coupling which models an external driven field described by the Rabi frequency is considered. Asymptotics for large Rabi frequency are carried out. Convergence ... More
The X-ray afterglow of GRB980519Apr 13 1999Over a total of 20 gamma-ray bursts localized with arcmin accuracies, GRB980519 represents the 13th detected by the BeppoSAX Wide Field Cameras. An X-ray TOO observation performed by the BeppoSAX Narrow Field Instruments, starting about 9.5 hours after ... More
Multi-wavelength analysis of the field of the dark burst GRB 031220Oct 20 2005We have collected and analyzed data taken in different spectral bands (from X-ray to optical and infrared) of the field of GRB031220 and we present results of such multiband observations. Comparison between images taken at different epochs in the same ... More
Soft X-ray spectroscopy of Compton-thick Seyfert 2 galaxies with BeppoSAXMay 20 1999We present a X-ray spectroscopic study of the bright Compton-thick Seyfert 2s NGC1068 and the Circinus Galaxy, performed with BeppoSAX. Matt et al. (1997 and 1998) interpreted the spectrum above 4 keV as the superposition of Compton reflection and warm ... More
Optically dim counterparts of hard X-ray selected AGNsFeb 24 2000We present near-IR photometry and imaging observations of a small sample of sources identified in the BeppoSAX 5-10 keV survey (HELLAS) which resolves ~ 20-30% of the X-ray background at these energies. The near-IR data are combined with optical spectra ... More
Evidence for Dust Related X-ray Emission from Comet C/1995 O1 (Hale-Bopp)Oct 31 1997We report the discovery of X-ray emission from comet C/1995 O1 (Hale-Bopp) by the LECS instrument on-board BeppoSAX on 1996 September 10--11. The 0.1--2.0 keV luminosity decayed by a factor of 2 on a timescale of ~10 hr with a mean value of 5.10E16 erg ... More
GRB000615 in X-raysApr 07 2001GRB000615 was detected simultaneously by the BeppoSAX GRBM and WFC 1 with a localization uncertainty of 2' (error circle radius). X-ray emission was detected only in the 0.1-4 keV range during a NFI observation started about 10 hours after the trigger ... More
Testing GRB models with the afterglow of GRB 090102Sep 07 2009Mar 04 2010We present the observations of the afterglow of gamma-ray burst GRB 090102. Optical data taken by the TAROT, REM, GROND, together with publicly available data from Palomar, IAC and NOT telescopes, and X-ray data taken by the XRT instrument on board the ... More
α7 nicotinic acetylcholine receptor signaling modulates ovine fetal brain astrocytes transcriptome in response to endotoxin: comparison to microglia, implications for prenatal stress and development of autism spectrum disorderDec 17 2018Dec 31 2018Neuroinflammation in utero may result in lifelong neurological disabilities. Astrocytes play a pivotal role, but the mechanisms are poorly understood. No early postnatal treatment strategies exist to enhance neuroprotective potential of astrocytes. We ... More
Alpha7 nicotinic acetylcholine receptor signaling modulates ovine fetal brain astrocytes transcriptome in response to endotoxinDec 17 2018Apr 09 2019Neuroinflammation in utero may result in lifelong neurological disabilities. Astrocytes play a pivotal role, but the mechanisms are poorly understood. No early postnatal treatment strategies exist to enhance neuroprotective potential of astrocytes. We ... More