Jorge Chaves
A5038565180- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Neutrino Physics Research
- Computational Physics and Python Applications
- Dark Matter and Cosmic Phenomena
- Cosmology and Gravitation Theories
- Astrophysics and Cosmic Phenomena
- Medical Imaging Techniques and Applications
- Gastric Cancer Management and Outcomes
- Radiation Detection and Scintillator Technologies
- Gastrointestinal Tumor Research and Treatment
- Planetary Science and Exploration
- Gamma-ray bursts and supernovae
- Esophageal Cancer Research and Treatment
- Helicobacter pylori-related gastroenterology studies
- Black Holes and Theoretical Physics
- Radiation Therapy and Dosimetry
- Advanced Data Storage Technologies
- Ferroptosis and cancer prognosis
- Distributed and Parallel Computing Systems
- Particle accelerators and beam dynamics
- International Science and Diplomacy
- Nuclear reactor physics and engineering
IPO Porto
2023-2025
Cornell University
2014-2022
University of Pennsylvania
2018-2021
California University of Pennsylvania
2018-2020
Institute of High Energy Physics
2016-2019
Stanford University
2014-2016
University of Colorado Boulder
2015
We report on an improved measurement of the $2\ensuremath{\nu}\ensuremath{\beta}\ensuremath{\beta}$ half-life ${}^{136}$Xe performed by EXO-200. The use a large and homogeneous time-projection chamber allows for precise estimate fiducial mass used measurement, resulting in small systematic uncertainty. also discuss detail data-analysis methods double-$\ensuremath{\beta}$ decay searches with EXO-200, while emphasizing those directly related to present measurement. is found be...
Final-state kinematic imbalances are measured in mesonless production of ν_{μ}+A→μ^{-}+p+X the MINERvA tracker. Initial- and final-state nuclear effects probed using direction μ^{-}-p transverse momentum imbalance initial-state struck neutron. Differential cross sections compared to predictions based on current approaches medium modeling. These models underpredict section at intermediate intranuclear transfers that generally exceed Fermi momenta. As neutrino interaction need correctly...
Elastic neutrino scattering on electrons is a precisely-known purely leptonic process that provides standard candle for measuring flux in conventional beams. Using total sample of 810 neutino-electron scatters after background subtraction, the measurement reduces normalization uncertainty muon NuMI between 2 and 20 GeV from 7.5% to 3.9%. This most precise neutrino-electron date, will reduce uncertainties MINERvA's absolute cross section measurements, demonstrates technique can be used future...
MINERvA presents a new analysis of neutrino induced quasielastic-like interactions in hydrocarbon tracking target. We report double-differential cross section using the muon transverse and longitudinal momentum. In addition, differential sections as function square four-momentum transferred energy are calculated quasielastic hypothesis. Finally, an deposited near interaction vertex is presented. These results compared to modified GENIE predictions well NuWro prediction. All use dataset...
EXO-200 is a single phase liquid xenon detector designed to search for neutrinoless double-beta decay of $^{136}$Xe. Here we report on various Majoron-emitting modes based 100 kg$\cdot$yr exposure A lower limit $T^{^{136}Xe}_{1/2} >1.2 \cdot 10^{24}$ yr at 90% C.L. the half-life spectral index = 1 Majoron was obtained, corresponding constraint Majoron-neutrino coupling constant $|< g^{M}_{ee} >|<$ (0.8-1.7)$\cdot$10$^{-5}$.
Faced with unresolved tensions between neutrino interaction measurements at few-GeV energies, current experiments are forced to accept large systematic uncertainties cover discrepancies their data and model predictions. The widely used pion production in genie is compared four $\mathrm{MINER}\ensuremath{\nu}\mathrm{A}$ charged using nuisance. Tunings, i.e., adjustments of parameters, help match older bubble chamber presented. We find that scattering off nuclear targets as measured not good...
Charged-current antineutrino interactions on a hydrocarbon scintillator in the MINERvA detector are used to study activity from their final-state neutrons. To ensure that most of neutrons primary interaction, rather than hadronic reinteractions detector, sample is limited momentum transfers below $0.8\text{ }\text{ }\mathrm{GeV}/\mathrm{c}$. From 16 129 interactions, 15 246 neutral particle candidates observed. The reference simulation predicts 64% these due interaction directly but also...
We present a simulation-based study using deep convolutional neural networks (DCNNs) to identify neutrino interaction vertices in the MINERvA passive targets region, and illustrate application of domain adversarial (DANNs) this context. DANNs are designed be trained one (simulated data) but tested second (physics utilize unlabeled data from so that during training only features which unable discriminate between domains promoted. is neutrino-nucleus scattering experiment NuMI beamline at...
We report the first measurement of neutron cross section on argon in energy range 100-800 MeV. The was obtained with a 4.3-h exposure Mini-CAPTAIN detector to WNR/LANSCE beam at LANL. total is measured from attenuation coefficient flux as it traverses liquid volume. A set 2631 candidate interactions divided bins kinetic calculated time-of-flight measurements. These are reconstructed custom-made algorithms specifically designed for data time projection chamber size detector. averaged...
EXO-200 is a single phase liquid xenon detector designed to search for neutrinoless double-beta decay of $^{136}$Xe the ground state $^{136}$Ba. We report here on two-neutrino first $0^+$ excited state, $0^+_1$, $^{136}$Ba based 100 kg$\cdot$yr exposure $^{136}$Xe. Using specialized analysis employing machine learning algorithm, we obtain 90% CL half-life sensitivity $1.7 \times 10^{24}$ yr. find no statistically significant evidence $2\nu\beta\beta$ resulting in lower limit $T^{2\nu}_{1/2}$...
Aims To develop and validate a new scale for mucosal visualization of the upper gastrointestinal tract during esophagogastroduodenoscopy (EGD), Gastroscopy RAte Cleanliness Evaluation (GRACE), as quality standard tool through application standardized, reliable, validated scoring system.
During the High Luminosity LHC, CMS detector will need charged particle tracking at hardware trigger level to maintain a manageable rate and achieve its physics goals. The tracklet approach is track-finding algorithm based on road-search that has been implemented commercially available FPGA technology. achieved high performance in completes within 3.4 μs Xilinx Virtex-7 FPGA. An overview of implementation an given, results are shown from demonstrator test stand system studies presented.
The high instantaneous luminosities expected following the upgrade of Large Hadron Collider (LHC) to High-Luminosity LHC (HL-LHC) pose major experimental challenges for CMS experiment.A central component allow efficient operation under these conditions is reconstruction charged particle trajectories and their inclusion in hardwarebased trigger system.There are many involved achieving this: a large input data rate about 20-40 Tb/s; processing new batch every 25 ns, each consisting 15,000...
A new approach for track reconstruction is presented to be used in the all-hardware first level of CMS trigger. The application intended upgraded all-silicon tracker, which installed High Luminosity era LHC (HL-LHC). machine expected deliver a luminosity on order 5 × 1034 cm−2s−1. This means there would about 125 pileup events each bunch crossing at frequency 40 MHz. To keep trigger rate manageable under these conditions, it necessary make quick decisions that will processed. timing...
Abstract Text 62 years-old male submitted to a total gastrectomy due gastric cancer.Within 72 hours, the patient developed sepsis.CT revealed an anastomotic leak.Endoscopy showed 45% dehiscence with large-sized cavity.Endoluminal vacuum therapy(EVT)was placed intracavitary.After third replacement, presented hemorrhage through transnasal tube.New endoscopy EVT in situ.After removal, 3 cm granulated cavity clot its distal portion was identified. Given tissue granulation and possible...
The upgrades of the Compact Muon Solenoid particle physics experiment at CERN's Large Hadron Collider provide a major challenge for real-time collision data selection. This paper presents novel approach to pattern recognition and charged trajectory reconstruction using an all-FPGA solution. challenges include large input rate about 20 40 Tbps, processing new batch every 25 ns, each consisting 10,000 precise position measurements particles (`stubs'), perform on these stubs find trajectories,...
<p>Efficacy summary for patients with gastric/GEJ adenocarcinoma (Part B).</p>
<p>Free (red) and total (blue) MMP9 for each patient in the monotherapy cohorts at Day 15 43 or End of Study (Days 40-57). Individual patients are separated by light gray dashed lines dose groups black lines. The horizontal line depicts lower limit quantitation (LLOQ).</p>
<p>Full study schema (ClinicalTrials.gov Identifier: NCT01803282)</p>
<p>Method for Free and Total MMP9 assays</p>