A5051789022- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Atomic and Subatomic Physics Research
- Particle Detector Development and Performance
- Gamma-ray bursts and supernovae
- Solar and Space Plasma Dynamics
- Radiation Detection and Scintillator Technologies
- Superconducting and THz Device Technology
- Radio Astronomy Observations and Technology
- Stellar, planetary, and galactic studies
- Physics of Superconductivity and Magnetism
- Nuclear Physics and Applications
- Galaxies: Formation, Evolution, Phenomena
- Geophysics and Gravity Measurements
- Gut microbiota and health
- Astro and Planetary Science
- Plant and soil sciences
- Plant-Microbe Interactions and Immunity
- Viral gastroenteritis research and epidemiology
- Animal Virus Infections Studies
- Agricultural and Food Production Studies
- Plant Pathogens and Fungal Diseases
Universitat de València
2011-2024
Institute for Cosmic Ray Research
2024
Canfranc Underground Laboratory
2016-2024
Institute for Integrative Systems Biology
2017-2024
National Research Council
2020
Instituto Valenciano de la Edificación
2019
Instituto de Física Corpuscular
2003-2018
Max Planck Institute for Physics
2018
Max Planck Society
2018
Consejo Superior de Investigaciones Científicas
1999-2013
A direct measurement of the 0.862 MeV 7Be solar neutrino interaction rate performed with Borexino detector at Laboratori Nazionali del Gran Sasso yields 46.0$\pm1.5_{\rm stat}$$^{+1.6}_{-1.5\,\rm syst}$ counts/day/(100 tons). Our result is first a sub-MeV an accuracy better than 5%. The hypothesis no oscillation for neutrinos rejected 4.9$\sigma$ C.L. Using latest Standard Solar Model (SSM) flux predictions, leads directly to precise determination survival probability $\nu_e$'s in vacuum,...
Borexino has been running since May 2007 at the LNGS with primary goal of detecting solar neutrinos. The detector, a large, unsegmented liquid scintillator calorimeter characterized by unprecedented low levels intrinsic radioactivity, is optimized for study lower energy part spectrum. During Phase-I (2007-2010) first detected and then precisely measured flux 7Be neutrinos, ruled out any significant day-night asymmetry their interaction rate, made direct observation pep set tightest upper...
Data from solar neutrino and KamLAND experiments have led to a discovery of nonzero masses. Here we investigate what these data can tell us about interactions with matter, including the poorly constrained flavor-changing νe–ντ interactions. We give examples interaction parameters that are excluded by solar/KamLAND beyond reach other experiments. also demonstrate interactions, at allowed level, may profoundly modify conversion probability for neutrinos energy ≲6 MeV values mass parameter...
We provide a summary of the current knowledge, theoretical and experimental, solar neutrino fluxes masses mixing angles that characterize oscillations. also summarize principal reasons for performing new experiments what we anticipate from future studies.
We generate new standard solar models using newly analyzed nuclear fusion cross sections and present results for helioseismic quantities neutrino fluxes. The status of the abundance problem is discussed. investigate whether nonstandard with accretion from protoplanetary disk might alleviate this problem. examine a broad range models, analyzing metal-enriched metal-depleted three scenarios timing accretion. Only partial solutions are found. For metal-rich accreted material (Zac ≳ 0.018) there...
We compute a new generation of standard solar models (SSMs) that includes recent updates on some important nuclear reaction rates and more consistent treatment the equation state. Models also include novel flexible opacity uncertainties based kernels, required in light theoretical experimental works radiative opacity. Two large sets SSMs, each different canonical set abundances with high low metallicity (Z), are computed to determine model correlations among observables. present detailed...
A bstract We present results of the Relic Axion Dark-Matter Exploratory Setup (RADES), a detector which is part CERN Solar Telescope (CAST), searching for axion dark matter in 34.67 μ eV mass range. radio frequency cavity consisting 5 sub-cavities coupled by inductive irises took physics data inside CAST dipole magnet first time using this filter-like haloscope geometry. An exclusion limit with 95% credibility level on axion-photon coupling constant g aγ ≳ 4 × 10 − 13 GeV 1 over range 34 ....
Abstract The local supercluster acts as a gravity deflection source for cosmic background neutrinos. This by changes the neutrino helicity and therefore has important consequences ground based tritium capture experiments aimed at determining if is Dirac or Majorana. Here we explore effect of using two simulations from DEMNUni suite characterised very different mass resolutions, they are both filled with 2048 3 dark matter particles (and an equal number massive particles) but have comoving...
A global analysis of the solar, atmospheric and reactor neutrino data is presented in terms three-neutrino oscillations. We include most recent solar rates Homestake, SAGE, GALLEX GNO, as well 1117 day Super-Kamiokande sample, including recoil electron energy spectrum both for night periods we treat a unified way full parameter space oscillations, correctly accounting transition from matter enhanced (MSW) to vacuum oscillations regime. Likewise, our description conversions with $\theta_{12}...
We study the extent to which decay of cold dark matter axions can be probed with forthcoming radio telescopes such as Square Kilometer Array (SKA). In particular we focus on signals arising from dwarf spheroidal galaxies, where astrophysical uncertainties are reduced and expected magnetic field strengths that axion may dominate over axion-photon conversion in a field. show $\sim100$ hours observing time, SKA could improve current sensitivity by factor about five.
The configuration of the three neutrino masses can take two forms, known as normal and inverted hierarchies. We compute Bayesian evidence associated with these Previous studies found a mild preference for hierarchy, this was driven by asymmetric manner in which cosmological data has confined available parameter space. Here we identify presence second asymmetry, is imposed from oscillations. By combining constraints on squared-mass splittings [1] limit sum Σmν < 0.13 eV [2], using minimally...
We propose, design and construct a variant of the conventional axion haloscope concept that could be competitive in search for dark matter axions masses decade 10–100 μeV. Theses are located somewhat above mass range which existing experiments have reached sensitivity to benchmark QCD models. Our consists an array small microwave cavities connected by rectangular irises, arrangement commonly used radio-frequency filters. The size unit cavity determines main resonant frequency, while...
Abstract Human blood metagenomics has revealed the presence of different types viruses in apparently healthy subjects. By far, anelloviruses constitute viral family that is more frequently found human blood, although amplification biases and contaminations pose a major challenge this field. To investigate further, we subjected pooled plasma samples from 120 donors Spain to high-speed centrifugation, RNA DNA extraction, random amplification, massive parallel sequencing. Our results confirm...
We propose a novel experiment, the Canfranc Axion Detection Experiment (CADEx), to probe dark matter axions with masses in range 330-460 $\mu$eV, within W-band (80-110 GHz), an unexplored parameter space well-motivated window of Quantum ChromoDynamics (QCD) axions. The experimental design consists microwave resonant cavity haloscope high static magnetic field coupled highly sensitive detecting system based on Kinetic Inductance Detectors via optimized quasi-optics (horns and mirrors)....
Cosmological probes are steadily reducing the total neutrino mass window, resulting in constraints on neutrino-mass degeneracy as most significant outcome. In this work we explore discovery potential of cosmological to constrain hierarchy, and point out some subtleties that could yield spurious claims detection. This has an important implication for next generation double beta decay experiments, will be able achieve a positive signal case degenerate or inverted hierarchy Majorana neutrinos....
We investigate the non-linear evolution of relic cosmic neutrino background by running large box-size, high resolution N-body simulations. Our set simulations explore properties neutrinos in a reference $\Lambda$CDM model with total masses between 0.05-0.60 eV cold dark matter haloes mass $10^{11}-10^{15}$ $h^{-1}$M$_{\odot}$, over redshift range $z=0-2$. compute halo function and show that it is reasonably well fitted Sheth-Tormen formula. More importantly, we focus on CDM density peculiar...
The animal microbiota (including the human microbiota) plays an important role in keeping physiological status of host healthy. Research seeks greater insight into whether changes composition and function are associated with disease. We analyzed published 16S rRNA shotgun metagenomic sequencing (SMS) data pertaining to gut microbiotas 99 subjects monitored over time. Temporal fluctuations microbial revealed significant differences due factors such as dietary changes, antibiotic intake, age,...
A bstract RADES (Relic Axion Detector Exploratory Setup) is a project with the goal of directly searching for axion dark matter above 30 μ eV scale employing custom-made microwave filters in magnetic dipole fields. Currently taking data at LHC CAST experiment. In long term, cavities are envisioned to take BabyIAXO magnet. this article we report on modelling, building and characterisation an optimised microwave-filter design alternating irises that exploits maximal coupling axions while being...
Abstract The latest cosmological constraints on the sum of neutrino masses, in combination with laboratory measurements oscillations, provide “decisive” Bayesian evidence for normal mass hierarchy. We show that this result holds across very different prior alternatives by exploring two extremes range choices. In fact, while specific numerical value Evidence depends choice prior, odds remain greater than 140:1 For Majorana neutrinos has important implications upper limit neutrino-less double...