A5008580023- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Neutrino Physics Research
- Astrophysics and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Radiation Detection and Scintillator Technologies
- Quantum Chromodynamics and Particle Interactions
- Nuclear Physics and Applications
- Radioactivity and Radon Measurements
- Atomic and Subatomic Physics Research
- Stellar, planetary, and galactic studies
- Black Holes and Theoretical Physics
- Radioactive Decay and Measurement Techniques
- Astro and Planetary Science
- Astrophysics and Star Formation Studies
- Particle Detector Development and Performance
- Seismology and Earthquake Studies
- High-Energy Particle Collisions Research
- Radioactive element chemistry and processing
- Gyrotron and Vacuum Electronics Research
- Big Data and Business Intelligence
- Radiation Therapy and Dosimetry
- Software Engineering Techniques and Practices
- Astronomy and Astrophysical Research
- Cold Atom Physics and Bose-Einstein Condensates
Universidad Nacional Autónoma de México
2014-2023
European Southern Observatory
2020-2022
Conference Board
2022
European Southern Observatory
2021
Center for Research and Advanced Studies of the National Polytechnic Institute
2012-2018
Universidad Nacional de Colombia
2018
Instituto Politécnico Nacional
2012-2018
Universidad de Cuautitlán Izcalli
2015-2016
DEAP-3600 is a single-phase liquid argon (LAr) direct-detection dark matter experiment, operating 2 km underground at SNOLAB (Sudbury, Canada). The detector consists of 3279 kg LAr contained in spherical acrylic vessel. This paper reports on the analysis $758\text{ }\text{ }\mathrm{tonne}\ifmmode\cdot\else\textperiodcentered\fi{}\mathrm{day}$ exposure taken over period 231 live-days during first year operation. No candidate signal events are observed WIMP-search region interest, which...
Context:Optical interferometry is at a key development stage. ESO's VLTI has established stable, robust infrastructure for long-baseline general astronomical observers. The present second-generation instruments offer wide wavelength coverage and improved performance. Their sensitivity measurement accuracy lead to data images of high reliability. Aims:We have developed MATISSE, the Multi AperTure mid-Infrared SpectroScopic Experiment, access resolution imaging in spectral domain explore...
After the first measurement of coherent elastic neutrino nucleus scattering (CENNS) by COHERENT Collaboration, it is expected that new experiments will confirm observation. Such measurements allow to put stronger constraints or discover physics as well probe Standard Model measuring its parameters. This case weak mixing angle at low energies, which could be measured with an increased precision in future results CENNS using, for example, reactor antineutrinos. In this work we analyze...
DEAP-3600 is a single-phase liquid argon detector aiming to directly detect weakly interacting massive particles (WIMPs), located at SNOLAB (Sudbury, Canada). After analyzing data taken during the first year of operation, null result was used place an upper bound on WIMP-nucleon, spin-independent, isoscalar cross section. This study reinterprets this within nonrelativistic effective field theory framework and further examines how various possible substructures in local dark matter halo may...
New measurements of the coherent elastic neutrino-nucleus scattering (CEvNS) are expected to be achieved in near future by using two neutrino production channels with different energy distributions: very low electron antineutrinos from reactor sources and muon neutrinos spallation neutron (SNS) a relatively higher energy. Although precise this reaction would allow an improved knowledge standard beyond Standard Model physics, it is important distinguish new contributions process. We...
Short distance reactor antineutrino experiments measure an spectrum a few percent lower than expected from theoretical predictions. In this work we study the potential of low energy threshold in context light sterile neutrino signal. We discuss perspectives recently detected coherent elastic neutrino-nucleus scattering future experiments. find that expectations to improve current constraints on mixing with neutrinos are promising. also analyse measurements off electrons short case,...
We have analyzed the electron anti-neutrino scattering off electrons and anti-neutrino-nuclei coherent in order to obtain constraints on tensorial couplings. studied formalism of non-standard interactions (NSI), as well case Unparticle physics. For our analysis we focused recent TEXONO collaboration results obtained current possible anti-neutrino-electron couplings both new physics formalisms. The possibility measuring for first time anti-neutrino-nucleus its potential further constrain...
One of the main purposes long-baseline neutrino experiments is to unambiguously measure CP violating phase in sector within three oscillation picture. In presence physics beyond Standard Model, determination will be more difficult, due already known degeneracy problem. Working framework non-standard interactions (NSI), we compute appearance probabilities an exact analytical formulation and analyze region parameters where confusion problem present. We also discuss some cases falsification NSI...
In this work we study the anomalous top quark-gluon couplings chromoelectric dipole moment and chromomagnetic in a general two Higgs doublet model with $CP$ violation. We find that provides an important contribution from ${Y}_{tt}$ Yukawa coupling needs to be taken into account. The predictions for obtained are $\ensuremath{-}0.03<\mathrm{\ensuremath{\Delta}}{\stackrel{\texttildelow{}}{k}}_{t}<\ensuremath{-}0.005$ $|\mathrm{\ensuremath{\Delta}}{\stackrel{\texttildelow{}}{d}}_{t}|<0.005$,...
A complete study on the fermion masses and flavor mixing is presented in a non-minimal left–right symmetric model (NMLRMS) where $$\mathbf{S}_{3}\otimes \mathbf{Z}_{2}\otimes \mathbf{Z}^{e}_{2}$$ symmetry drives Yukawa couplings. In quark sector, mass matrices possess kind of generalized Fritzsch textures that allow us to fit CKM matrix good agreement latest experimental data. lepton other hand, soft breaking $$\mu \leftrightarrow \tau $$ provides nonzero nonmaximal reactor atmospheric...
We study the S3 symmetric extension of Standard Model in which all irreducible representations permutation group are occupied by SU(2) scalar doublets, one is taken as inert and can lead to dark matter candidates. perform a scan over parameter space probing points against physical constraints ranging from unitarity tests experimental Higgs searches limits. find that latter severely restrict model. For acceptable we compute value relic density candidates it has region for low masses complies...
Models beyond the Standard Model with extra scalars have been highly motivated by recent discovery of a Higgs boson. The Two Doublet Type III considers most general case for scalar potential, allowing mixing between neutral CP-even and CP-odd fields. This work presents results study on $t\rightarrow c\gamma$ decay at one loop level if flavor changing is generated top-charm-Higgs coupling given Yukawa matrix. For instance, value branching ratio $Br(t\rightarrow c\gamma)\sim 10^{-6}$...
Taking into account recent theoretical and experimental inputs on reactor fluxes we reconsider the determination of weak mixing angle from low energy experiments. We perform a global analysis to all available neutrino-electron scattering data antineutrino experiments, obtaining sin^2(theta_W) = 0.252 \pm 0.030. discuss impact new prediction for neutrino spectrum, measurement spectrum by Daya Bay collaboration, as well effect radiative corrections. also reanalyze measurements nu_e-e cross...
Several proposals for studying neutrinos with large detectors are currently under discussion. We suggest that they could provide a precise measurement of the electroweak mixing angle as well probe new physics, such non-standard neutrino interactions (NSI), and gauge structure. illustrate this explicitly case LENA proposal, either an artificial radioactive source or by using solar flux.
The rare τ − → η(′)π−ν decays, which are suppressed by G-parity in the Standard Model (SM), can be sensitive to effects of new interactions. We study sensitivity different observables these decays framework an effective field theory that includes most general interactions between SM fields up dimension six, assuming massless neutrinos. Owing strong suppression isospin breaking amplitudes, we find would allow set constraints on scalar stronger than those coming from other low-energy observables.
We compute the contributions to rare top decays $t\rightarrow cZ$ and ch_1$ from scalar sector in 2HDM type III with CP violation, where $h_1$ is Standard Model Higgs boson. The branching ratio for $BR(t\rightarrow c Z)$ h_1)$ are obtained as a function of model parameters. In particular, can increase its value up $10^{-3}$ $\tan\beta= 1$ masses additional bosons $m_{h_2,h_3,H^\pm}\sim 0.5$ TeV. Meanwhile reach values order $\sim10^{-2}$. constrain parameters (mixing angles neutral fields...
This article reports the characterization of two High Purity Germanium detectors performed by extracting and comparing their efficiencies using experimental data Monte Carlo simulations. The were calculated for pointlike $\gamma$-ray sources as well extended calibration sources. Characteristics such energy linearity, resolution, full peak are reported from measurements on surface laboratories. will be deployed in a assay facility that located first underground laboratory Mexico, Laboratorio...
DEAP-3600 is a liquid-argon scintillation detector looking for dark matter. Scintillation events in the liquid argon (LAr) are registered by 255 photomultiplier tubes (PMTs), and pulseshape discrimination (PSD) used to suppress electromagnetic background events. The excellent PSD performance of LAr makes it viable target matter searches, discussed here basis PSD. observed combination physics with effects. We present model energy region interest searches. composed a) physics, including...
The nature of circumstellar envelopes (CSE) around Cepheids is still a matter debate. physical origin their infrared (IR) excess could be either shell ionized gas, or dust envelope, both. This study aims at constraining the geometry and IR environment long-period Cepheid $\ell$ Car (P=35.5 days) mid-IR wavelengths to understand its nature. We first use photometric observations in various bands Spitzer Space Telescope spectroscopy constrain Car. Then, we analyze VLTI/MATISSE measurements...
This paper explores the prospect of CMOS devices to assay lead in drinking water, using calorimetry. Lead occurs together with traces radioisotopes, e.g., 210Pb, producing g-emissions energies ranging from 10 keV several 100 when they decay; this range is detectable silicon sensors. In we test a camera (OXFORD INSTRUMENTS Neo 5.5) for its general performance as detector X-rays and low energy g-rays assess sensitivity relative World Health Organization upper limit on water. Energies 6 60 are...
The simplest scalar representations under SU(2)L symmetry are considered to extend the sector of Standard Model. main motivation is including a dark matter candidate, which could arise from additional fields. We also include an U(1) in order control stability candidate.
Context. The inner few au region of planet-forming disks is a complex environment. High angular resolution observations have key role in understanding the disk structure and dynamical processes at work. Aims. In this study we aim to characterize mid-infrared brightness distribution young intermediate-mass star HD 163296, from VLTI/MATISSE observations. Methods. We use geometric models fit data. Our include smoothed ring, flat with cavity, 2D Gaussian. can account for inclination azimuthal...
In order to obtain a dark matter candidate we propose an extension of the S3 symmetric 3-Higgs doublet model, adding new scalar doublet, occupying all irreducible representations discrete symmetry. To ensure stability particle impose extra Z2 We find analytical masses particles and constrain their values using unitarity conditions.
Low energy threshold reactor experiments have the potential to give insight into light sterile neutrino signal provided by antineutrino anomaly and gallium anomaly. In this work we analyze short baseline that detect elastic electron scattering in context of a signal. We also sensitivity experimental proposals coherent nucleus (CENNS) detectors order exclude or confirm with antineutrinos.