E. Arganda
A5068987519- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Particle Detector Development and Performance
- Computational Physics and Python Applications
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Cosmology and Gravitation Theories
- Radio Astronomy Observations and Technology
- Black Holes and Theoretical Physics
- Atmospheric Ozone and Climate
- Gamma-ray bursts and supernovae
- Atmospheric aerosols and clouds
- Precipitation Measurement and Analysis
- Distributed and Parallel Computing Systems
- Nuclear physics research studies
- Astronomical Observations and Instrumentation
- History and Developments in Astronomy
- Solar and Space Plasma Dynamics
- Advanced Mathematical Physics Problems
- Calibration and Measurement Techniques
- Atmospheric chemistry and aerosols
- Radio Wave Propagation Studies
- Advanced Data Storage Technologies
Universidad Autónoma de Madrid
2005-2024
Consejo Nacional de Investigaciones Científicas y Técnicas
2012-2024
Universidad Nacional de La Plata
2012-2024
Instituto de Física Teórica
2006-2024
Consejo Superior de Investigaciones Científicas
2019-2023
National Research Council
2021
Universidad de Zaragoza
2014-2016
Universidad Complutense de Madrid
2009-2013
Bariloche Atomic Centre
2011
Institute of Physics Rosario
2011
We describe the measurement of depth maximum, X{max}, longitudinal development air showers induced by cosmic rays. Almost 4000 events above 10;{18} eV observed fluorescence detector Pierre Auger Observatory in coincidence with at least one surface station are selected for analysis. The average shower maximum was found to evolve energy a rate (106{-21}{+35}) g/cm{2}/decade below 10{18.24+/-0.05} eV, and (24+/-3) this energy. measured shower-to-shower fluctuations decrease from about 55 26...
This chapter of the report "Flavor in era LHC" Workshop discusses theoretical, phenomenological and experimental issues related to flavor phenomena charged lepton sector conserving CP-violating processes. We review current limits main theoretical models for structure fundamental particles. analyze consequences available data, setting constraints on explicit beyond standard model, presenting benchmarks discovery potential forthcoming measurements both at LHC low energy, exploring options...
We report a measurement of the proton-air cross section for particle production at center-of-mass energy per nucleon 57 TeV. This is derived from distribution depths shower maxima observed with Pierre Auger Observatory: systematic uncertainties are studied in detail. Analyzing tail maxima, $[505\ifmmode\pm\else\textpm\fi{}22(\mathrm{stat}{)}_{\ensuremath{-}36}^{+28}(\mathrm{syst})]\text{ }\text{ }\mathrm{mb}$ found.
In this work the following lepton flavor violating $\ensuremath{\tau}$ and $\ensuremath{\mu}$ decays are studied: ${\ensuremath{\tau}}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{\ensuremath{-}}{\ensuremath{\mu}}^{\ensuremath{-}}{\ensuremath{\mu}}^{+}$, ${\ensuremath{\tau}}^{\ensuremath{-}}\ensuremath{\rightarrow}{e}^{\ensuremath{-}}{e}^{\ensuremath{-}}{e}^{+}$, ${\ensuremath{\mu}}^{\ensuremath{-}}\ensuremath{\rightarrow}{e}^{\ensuremath{-}}{e}^{\ensuremath{-}}{e}^{+}$,...
In this paper we consider a Higgs boson with mass and other properties compatible those of the recently discovered particle at LHC, explore possibility new leptonic decays, beyond standard model, singular feature being lepton flavor violating (LFV). We study these LFV $H\ensuremath{\rightarrow}{l}_{k}{\overline{l}}_{m}$, within context inverse seesaw model (ISS) most generic case where three additional pairs massive right-handed singlet neutrinos are added to content. require in addition...
The Pierre Auger Observatory is exploring the potential of radio detection technique to study extensive air showers induced by ultra-high energy cosmic rays. Engineering Radio Array (AERA) addresses both technological and scientific aspects technique. A first phase AERA has been operating since September 2010 with detector stations observing signals at frequencies between 30 80 MHz. In this paper we present comparative studies identify optimize antenna design for final configuration...
Lepton flavor violating Higgs boson decays are studied within the context of seesaw models with Majorana massive neutrinos. Two considered: The SM-seesaw, Standard Model Particle content plus three right handed neutrinos, and MSSM-seesaw, Minimal Supersymmetric particle neutrinos their supersymmetric partners. widths for these derived from a full one-loop diagrammatic computation in both models, they analyzed numerically terms parameters, namely, Dirac mass matrices. Several possible...
A thorough search for large-scale anisotropies in the distribution of arrival directions cosmic rays detected above 1018 eV at Pierre Auger Observatory is reported. For first time, these anisotropy searches are performed as a function both right ascension and declination expressed terms dipole quadrupole moments. Within systematic uncertainties, no significant deviation from isotropy revealed. Upper limits on amplitudes derived under hypothesis that any ray dominated by such moments this...
In this article, we study the full one-loop SUSY contributions to lepton flavor violating Higgs decay $h\ensuremath{\rightarrow}\ensuremath{\tau}\overline{\ensuremath{\mu}}$, within context of supersymmetric inverse seesaw model. We assume that both right-handed neutrino masses, ${M}_{R}$, and their partner ${m}_{{\stackrel{\texttildelow{}}{\ensuremath{\nu}}}_{R}}$, are not far from interesting $\mathcal{O}(\mathrm{TeV})$ energy scale, work with scenarios large Yukawa couplings transmit...
The Surface Detector of the Pierre Auger Observatory is sensitive to neutrinos all flavors above 0.1 EeV. These interact through charged and neutral currents in atmosphere giving rise extensive air showers. When interacting deeply at nearly horizontal incidence, can be distinguished from regular hadronic cosmic rays by broad time structure their shower signals water-Cherenkov detectors. In this paper we present for first an analysis based on down-going neutrinos. We describe search...
A thorough search of the sky exposed at Pierre Auger Cosmic Ray Observatory reveals no statistically significant excess events in any small solid angle that would be indicative a flux neutral particles from discrete source. The covers −90° to +15° declination using four different energy ranges above 1 EeV (1018 eV). method used this is more sensitive neutrons than photons. upper limit on neutron derived for dense grid directions each ranges. These results constrain scenarios production...
The surface detector array of the Pierre Auger Observatory can detect neutrinos with energy Eν between 1017 eV and 1020 from point-like sources across sky south +55° north −65° declinations. A search has been performed for highly inclined extensive air showers produced by interaction all flavors in atmosphere (downward-going neutrinos), decay tau leptons originating neutrino interactions Earth's crust (Earth-skimming neutrinos). No candidate have found data up to 2010 May 31. This...
In this letter we study new relevant phenomenological consequences of the right-handed heavy neutrinos with masses at ${\cal O}(1)$ TeV energy scale, working within context Inverse Seesaw Model that includes three pairs quasi-degenerate pseudo-Dirac neutrinos. We propose a exotic signal these CERN Large Hadron Collider containing muon, tau lepton, and two jets in final state, which is based on interesting fact model can incorporate large Lepton Flavor Violation for specific choices...
Studies of the composition highest energy cosmic rays with Pierre Auger Observatory, including examination hadronic physics effects on structure extensive air showers.