A5086821180- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Particle Detector Development and Performance
- Radio Astronomy Observations and Technology
- Particle accelerators and beam dynamics
- Noncommutative and Quantum Gravity Theories
- Matrix Theory and Algorithms
- Physics of Superconductivity and Magnetism
- Gamma-ray bursts and supernovae
- Climate variability and models
- Algebraic structures and combinatorial models
- Nuclear physics research studies
- Galaxies: Formation, Evolution, Phenomena
- Relativity and Gravitational Theory
- Advanced Thermodynamics and Statistical Mechanics
- Atomic and Subatomic Physics Research
- Geophysics and Gravity Measurements
- Tensor decomposition and applications
- Superconducting Materials and Applications
- Computational Physics and Python Applications
- High-Energy Particle Collisions Research
- Quantum Information and Cryptography
Universitat de Barcelona
2011-2023
The Ohio State University
2022
Energy Center of Wisconsin
2014-2019
University of Wisconsin–Madison
2013-2019
Universitat de València
2016-2019
Instituto de Física Corpuscular
2016-2019
Perimeter Institute
2019
Queen's University
2019
Consejo Superior de Investigaciones Científicas
2019
Universidad Autónoma de Madrid
2019
We quantify our present knowledge of the size and flavor structure non-standard neutrino interactions which affect matter background in evolution solar, atmospheric, reactor long-baseline accelerator neutrinos as determined by a global analysis oscillation data - both alone combination with results on coherent neutrino-nucleus scattering from COHERENT experiment. consider general neutral current quarks whose lepton-flavor is independent quark type. study dependence allowed ranges interaction...
Astrophysical neutrinos are powerful tools for investigating the fundamental properties of particle physics through their flavor content. In this Letter, we perform first general new study on ultrahigh energy neutrino content by introducing effective operators. We find that, at current limits these operators, terms cause maximal effects content; however, Earth is confined to a region related assumed initial Furthermore, conclude that precise measure will provide orders magnitude improvement...
We review the physics potential of a next generation search for solar axions: International Axion Observatory (IAXO) . Endowed with sensitivity to discover axion-like particles (ALPs) coupling photons as small gaγ∼ 10−12 GeV−1, or electrons gae∼10−13, IAXO has find QCD axion in 1 meV∼1 eV mass range where it solves strong CP problem, can account cold dark matter Universe and be responsible anomalous cooling observed number stellar systems. At same time, will have enough detect lower axions...
We present an update of the determination solar neutrino fluxes from a global analysis and terrestrial data in framework three-neutrino mixing. Using Bayesian we reconstruct posterior probability distribution function for eight normalization parameters plus relevant masses mixing, with without imposing luminosity constraint. then use these results to compare description provided by different Standard Solar Models. Our show that, at present, both models low high metallicity can describe...
This report summarizes the present status of neutrino non-standard interactions (NSI). After a brief overview, several aspects NSIs are discussed, including connection to mass models, model-building and phenomenology large NSI with both light heavy mediators, in short- long-baseline oscillation experiments, cross-sections, complementarity other low- high-energy fits scattering data, DUNE sensitivity NSI, effective field theory as well relevance dark matter cosmology. We also discuss open...
We revisit the production of baryon asymmetries in minimal type I seesaw model with heavy Majorana singlets GeV range. In particular we include “washout” effects from scattering processes gauge bosons, Higgs decays and inverse decays, besides dominant top scatterings. show that two singlets, for an inverted light neutrino ordering, future measurements SHiP neutrinoless double beta decay could principle provide sufficient information to predict matter-antimatter asymmetry universe. also very...
We review the current status of leptogenesis scenario originally proposed by Akhmedov, Rubakov and Smirnov (ARS). It takes place in parametric regime where right-handed neutrinos are at electroweak scale or below CP-violating effects induced coherent superposition different mass eigenstates. Two main theoretical approaches to derive quantum kinetic equations, Hamiltonian time evolution as well Closed-Time-Path technique presented, we discuss their relations. For scenarios with two neutrinos,...
Light sterile neutrinos have been motivated by anomalies observed in short-baseline neutrino experiments. Among them, radioactive-source and reactor experiments provided evidence constraints, respectively, for electron disappearance compatible with an eV-scale neutrino. The results from these observations are seemingly conflict. This paper brings into focus the assumption that wave packet can be approximated as a plane wave, which is adopted all analyses of such We demonstrate damping...
We perform a geometric analysis for the sky map of IceCube TeV-PeV neutrino excess and test its compatibility with decaying dark matter signals in our galaxy. have found that galactic component general improve goodness fit model, although pure isotropic hypothesis has better than one. also consider several representative matter, which can provide good to observed spectrum at lifetime around 12 orders magnitude longer age universe.
A Standard Model extension with two Majorana neutrinos can explain the measured neutrino masses and mixings, also account for matter-antimatter asymmetry in a region of parameter space that could be testable future experiments. The testability model relies to some extent on its minimality. In this paper we address possibility might extended by extra generic new physics which parametrize terms low-energy effective theory. We consider effects operators lowest dimensionality, $d=5$, evaluate...
Future experiments such as SHiP and high-intensity $$e^+ e^-$$ colliders will have a superb sensitivity to heavy Majorana neutrinos with masses below $$M_Z$$ . We show that the measurement of mixing electrons muons one state could establish existence CP violating phases in neutrino matrix, context low-scale seesaw models. quantify minimal model reach these future experiments, demonstrate matrix be established at 5 $$\sigma $$ CL very significant fraction parameter space.
We construct a neutrino model of three twin neutrinos in light the appearance excesses at LSND and MiniBooNE. The model, which includes parity, naturally predicts identical lepton Yukawa structures Standard Model sectors. As result, universal mixing angle controls all couplings to charged leptons. This is predicted be ratio electroweak scale over composite Higgs boson has right order magnitude fit data. heavy decay within experimental lengths into active plus long-lived Majoron can provide...
We discuss the prospects of detecting sources ultra-high energy (UHE) cosmic ray (CR) nuclei via their emission cosmogenic gamma-rays in GeV to TeV range. These result from electromagnetic cascades initiated by high photons, electrons and positrons that are emitted CRs during propagation radiation background independent simultaneous vicinity source. The corresponding production power UHE CR (with mass number A charge Z) is dominated pion photo-production (~ A) Bethe-Heitler pair Z^2). show...
We investigate whether a subset of high-energy events observed by IceCube may be due to neutrinos from Sagittarius A*. check both spatial and temporal coincidences with other transient activities Among the seven shower nearest Galactic center, we have found that event 25 has time very close (around three hours after) brightest x-ray flare A* Chandra X-ray Observatory $p$-value 0.9%. Furthermore, two occurred within one day each (there is 1.6% probability this would occur for random...
In this work we revisit the question of whether Cosmology can be made compatible with scenarios light sterile neutrinos, as invoked to explain SBL anomalies, in presence self-interaction among neutrinos mediated by massive gauge bosons. We examine proposal deriving cosmological predictions model a wide range parameters including effective interaction strength $G_X$, neutrino mass $m_{\rm st}$ and active-sterile mixings. With those perform statistical analysis data from BBN, CMB, BAO infer...
In this paper, we study the effect of active-neutrino-sterile-neutrino mixing in expected high-energy astrophysical neutrino flavor content. Non-unitarity measurement three active neutrinos can be due to existence sterile states. We introduce concept four-flavor tetrahedron order visualize lack unitarity three-flavor triangle. demonstrate that active-sterile mixings modify allowed region ratio from standard case. However, a projection has restrictions phase space similar On other hand,...
Non-standard interactions in the propagation of neutrinos matter can lead to significant deviations from expectations within standard neutrino oscillation framework and atmospheric detectors have been considered set constraints. However, most previous works focused on relatively low-energy data. Here, we consider one-year high-energy through-going muon data IceCube, which has already used search for light sterile neutrinos, constrain new μτ-sector. In our analysis include several systematic...