A5068109869- Particle physics theoretical and experimental studies
- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Cosmology and Gravitation Theories
- Particle accelerators and beam dynamics
- Nuclear physics research studies
- Black Holes and Theoretical Physics
- Superconducting Materials and Applications
- Physics of Superconductivity and Magnetism
- Spectral Theory in Mathematical Physics
- Numerical methods in inverse problems
- Computational Physics and Python Applications
- Quantum, superfluid, helium dynamics
- Nuclear Physics and Applications
- Ionosphere and magnetosphere dynamics
- Particle Detector Development and Performance
- Muon and positron interactions and applications
- Information Society and Technology Trends
- Error Correcting Code Techniques
- Coding theory and cryptography
- Matrix Theory and Algorithms
- Radio Astronomy Observations and Technology
Roma Tre University
2015-2024
Istituto Nazionale di Fisica Nucleare, Sezione di Roma Tre
2009-2024
Charles Humbert 8
2015
Universidad Autónoma de Madrid
2015
Rina Services (Italy)
2015
University of Würzburg
2010-2011
Max Planck Institute for Astrophysics
2010
Institute of Space Sciences
2009
Durham University
2009
Instituto Politécnico de Lisboa
2009
The conclusions of the Physics Working Group international scoping study a future Neutrino Factory and super-beam facility (the ISS) are presented. ISS was carried by community between NuFact05, 7th International Workshop on Factories Superbeams, Laboratori Nazionali di Frascati, Rome, June 21-26, 2005) NuFact06 (Ivine, California, 24{30 August 2006). physics case for an extensive experimental programme to understand properties neutrino is presented role high-precision measurements...
The measurement of the flavor composition neutrino fluxes from astrophysical sources has been proposed as a method to study not only nature their emission mechanisms, but also fundamental properties. It is however problematic reconcile these two goals, since sufficiently accurate understanding at source needed extract information about physics propagation. In this work we discuss critically expectations for and energy spectrum different types sources, comment on theoretical uncertainties...
We present a see-saw A4 model for Tri-Bimaximal mixing which is based on very economical flavour symmetry and field content still possesses all the good features of models. In particular charged lepton mass hierarchies are determined by × Z4 itself without invoking Froggatt–Nielsen U(1) symmetry. exact in leading order while angles receive corrections same next-to-leading approximation. As consequence predicted value θ13 within sensitivity experiments will take data near future. The light...
A bstract We present a renormalizable non supersymmetric Grand Unified SO(10) model which, at the price of large fine tuning, is compatible with all compelling phenomenological requirements below unification scale and thus realizes minimal extension SM, unified in describing known physics M GUT . These include coupling enough to be bounds on proton decay; Yukawa sector agreement data quark lepton masses mixings leptogenesis as origin baryon asymmetry Universe; an axion arising from Higgs...
A bstract Next generation neutrino oscillation experiments are expected to measure the remaining parameters with very good precision. They will have unprecedented capabilities search for new physics that modify oscillations. DUNE, its broad band beam, particle identification, and relatively high energies provide an excellent environment physics. If deviations from standard three-flavor picture seen however, it is crucial know which scenario found so can be verified elsewhere theoretically...
The availability of the double-differential charged-current neutrino cross section, measured by MiniBooNE Collaboration using a carbon target, allows for systematic comparison nuclear effects in quasielastic electron and scattering. results our study, based on impulse approximation scheme state-of-the-art model spectral functions, suggest that section flux averaged sections, corresponding to same target comparable kinematical conditions, cannot be described within theoretical approach value...
We propose a model for leptons based on the smallest modular finite group $\Gamma_2\cong S_3$ that, first time, accounts both hints of large low-energy CP-violation in lepton sector and matter-antimatter asymmetry Universe, generated by only two heavy right-handed neutrinos. These same states are also employed Minimal seesaw mechanism to generate light neutrino masses. Besides neutrinos, our particle content is as Standard Model (SM), with addition one single modulus $\tau$, whose vacuum...
The recent results of the Planck experiment put a stringent constraint on sum light neutrino masses, ${\mathrm{\ensuremath{\Sigma}}}_{i}{m}_{i}<0.23\text{ }\text{ }\mathrm{eV}$ (95% C.L.). On other hand, two-zero Majorana mass matrix textures predict strong correlations among atmospheric angle ${\mathrm{sin}}^{2}{\ensuremath{\theta}}_{23}$ and $\mathrm{\ensuremath{\Sigma}}$. We use result to show that, for normal hierarchy case, texture with vanishing (2, 2) (3, 3) elements is ruled out...
A bstract Assuming three generations of Majorana neutrinos, we study the different mixing patterns that arise from non-trivial breaking flavor group 5 and CP to residual symmetries Z 3 , or 2 × in charged lepton neutrino sector. All contain only one free parameter θ thus angles as well Dirac two phases are strongly correlated. We perform an analytical a numerical all possible patterns. It turns out four can describe experimentally measured values for particular choice well. them predict...
Positrons beam dump experiments have unique features to search for very narrow resonances coupled superweakly ${e}^{+}{e}^{\ensuremath{-}}$ pairs. Due the continued loss of energy from soft photon bremsstrahlung, in first few radiation lengths a positron can continuously scan resonant production new via ${e}^{+}$ annihilation off an atomic ${e}^{\ensuremath{-}}$ target. In case dark ${A}^{\ensuremath{'}}$ kinetically mixed with photon, this mode is order electromagnetic coupling...
A bstract We present minimalist constructions for lepton masses and mixing based on flavour symmetry under the modular group Γ N of lowest level = 2. As opposed to only existing model 2 ≅ S 3 formulated in a SUSY framework, non-SM field is modulus τ , generalised CP implemented. Charged-leptons are reproduced through arguments, without requiring fine-tuning free parameters. result, all observables (masses mixing) within 1 σ experimental range using minimum nine real parameters (including...
A bstract Scalar non-standard neutrino interactions (sNSI) is a scenario where neutrinos can develop medium dependent contribution to their mass due new scalar mediator. This differs from the commonly discussed vector mediator case in that oscillation effect scales with density rather than and energy. Thus strongest constraint comes solar which experience largest experiment. We derive constraints on all sNSI parameters as well absolute scale by combining reactor data find be > 1 order of...
In the effort to obtain a precise measurement of leptonic CP-violation with ESS$\nu$SB experiment, accurate and fast reconstruction detector events plays pivotal role. this work, we examine possibility replacing currently proposed likelihood-based method an approach based on Graph Neural Networks (GNNs). As is reasonably but computationally expensive, one benefits Machine Learning (ML) enabling event in development phase, allowing for easier investigation effects changes design. Focusing...
A generation of neutrino experiments have established that neutrinos mix and probably mass. The mixing phenomenon points to processes beyond those the Standard Model, possibly at Grand Unification energy scale. extensive sequence will be required measure precisely all parameters matrix, culminating with discovery study leptonic CP violation. As a first step, extensions conventional pion/kaon decay beams, such as off-axis beams or low-energy super-beams, been considered. These could yield...
A class of discrete flavor-symmetry-based models predicts constrained neutrino mass matrix schemes that lead to specific sum-rules (MSR). We show how these theories may constrain the absolute scale mass, leading in most cases a lower bound on neutrinoless double beta decay effective amplitude.
We present a model based on the A4 non-abelian discrete symmetry leading to predictive five-parameter neutrino mass matrix and providing stable dark matter candidate. found an interesting correlation among atmospheric reactor angles which predicts theta_23 ~ pi/4 for very small angle deviation from maximal mixing large theta_13. Only normal spectrum is possible effective entering neutrinoless double beta decay rate constrained be |m_ee| > 4 10^{-4} eV.
In this paper, we derive simple and general perturbative formulas for the flavor flux ratios ${R}_{\ensuremath{\alpha}\ensuremath{\beta}}={\ensuremath{\phi}}_{{\ensuremath{\nu}}_{\ensuremath{\alpha}}}/{\ensuremath{\phi}}_{{\ensuremath{\nu}}_{\ensuremath{\beta}}}$ that could be measured at neutrino telescopes. We discuss in detail role of uncertainties mixing parameters showing they have to seriously taken into account any realistic discussion about measurements addition, analyze impact such...
To be able to achieve their physics goals, future neutrino-oscillation experiments will need reconstruct the neutrino energy with very high accuracy. In this work, we analyze how reconstruction may affected by realistic detection capabilities, such as resolutions, efficiencies, and thresholds. This allows us estimate well detector performance needs determined a priori in order avoid sizable bias measurement of relevant oscillation parameters. We compare kinematic calorimetric methods context...