R. Álvarez-Garrote

ORCID: 0000-0002-8775-7166
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About
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Research Areas
  • Dark Matter and Cosmic Phenomena
  • Particle physics theoretical and experimental studies
  • Neutrino Physics Research
  • Radiation Detection and Scintillator Technologies
  • Particle Detector Development and Performance
  • Atomic and Subatomic Physics Research
  • Quantum Chromodynamics and Particle Interactions
  • Computational Physics and Python Applications
  • High-Energy Particle Collisions Research
  • Astrophysics and Cosmic Phenomena

Unidades Centrales Científico-Técnicas
2024

Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
2023-2024

Universidad Complutense de Madrid
2024

Liquid argon time projection chambers (TPC) are widely used in neutrino oscillation and dark matter experiments. Detection of scintillation light liquid TPC's is challenging because its short wavelength, the VUV range, cryogenic temperatures (~86 K) at which sensors must operate. Wavelength shifters (WLS) typically needed to take advantage high Photon Efficiency (PDE) visible range most photondetectors. The Hamamatsu VUV4 S13370--6075CN SiPMs can directly detect without use WLS, main benefit...

10.1016/j.nima.2024.169347 preprint EN arXiv (Cornell University) 2024-02-02

SBND is the near detector of Short-Baseline Neutrino program at Fermilab. Its location to Booster Beam source and relatively large mass will allow study neutrino interactions on argon with unprecedented statistics. This paper describes expected performance photon detection system, using a simulated sample beam neutrinos cosmogenic particles. design dual readout concept combining system 120 photomultiplier tubes, used for triggering, 192 X-ARAPUCA devices, located behind anode wire planes....

10.1140/epjc/s10052-024-13306-3 article EN cc-by The European Physical Journal C 2024-10-10

Abstract The DUNE far detector has been designed to detect photons and electrons generated by the charged products of interaction neutrinos with a massive liquid argon (LAr) target. photon detection system (PDS) first (FD1) is composed 6000 units, named X-ARAPUCA . prompt light pulse particle energy release in LAr will complement boost Time Projection Chamber. It improve non-beam events tagging enable at low energies trigger calorimetry supernova neutrinos. an assembly several components....

10.1140/epjc/s10052-024-13393-2 article EN cc-by The European Physical Journal C 2024-10-07

The LHCb collaboration has recently reported the largest CP violation effect from a single amplitude, as well other giant asymmetries in several B-meson decays into three charmless light mesons. It is also claimed that this predominantly due to ππ→KK[over ¯] rescattering final state, particularly 1 1.5 GeV region. In these analyses amplitude by default estimated ππ elastic scattering and does not describe existing data. Here we show how recent model-independent dispersive analysis of data...

10.1103/physrevlett.130.201901 article EN cc-by Physical Review Letters 2023-05-18

This paper describes a procedure for the validation of alpha-particle sources (exempt unsealed sources) to be used in experimental setups with liquefied gases at cryogenic temperatures (down -196 °C) and high vacuum. These are interest development characterization neutrino dark matter detectors based on liquid argon, among others. Due purity requirements, have withstand vacuum extended periods. The has been applied 241Am produced by electrodeposition.

10.1016/j.apradiso.2023.110913 article EN cc-by Applied Radiation and Isotopes 2023-06-25

Liquid argon time projection chambers (TPC) are widely used in neutrino oscillation and dark matter experiments. Detection of scintillation light liquid TPC's is challenging because its short wavelength, the VUV range, cryogenic temperatures (∼86 K) at which sensors must operate. Wavelength shifters (WLS) typically needed to take advantage high Photon Efficiency (PDE) visible range most photondetectors. The Hamamatsu VUV4 S13370–6075CN SiPMs can directly detect without use WLS, main benefit...

10.1016/j.nima.2024.169347 article EN cc-by-nc-nd Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 2024-04-13

We present a search for long-lived particles (LLPs) produced from kaon decay that to two muons inside the ICARUS neutrino detector. This channel would be signal of hidden sector models can address outstanding issues in particle physics such as strong CP problem and microphysical origin dark matter. The is performed with data collected Neutrinos at Main Injector (NuMI) beam Fermilab corresponding $2.41\times 10^{20}$ protons-on-target. No new observed, we set world-leading limits on heavy QCD...

10.48550/arxiv.2411.02727 preprint EN arXiv (Cornell University) 2024-11-04

The Short-Baseline Near Detector (SBND) is one of three Liquid Argon Time Projection Chamber (LArTPC) neutrino detectors positioned along the axis Booster Neutrino Beam (BNB) at Fermilab, as part (SBN) Program. detector currently being commissioned and expected to take data this year. SBND characterized by superb imaging capabilities will record over a million interactions per Thanks its unique combination measurement resolution statistics, carry out rich program interaction measurements...

10.22323/1.476.0135 preprint EN cc-by-nc-nd 2024-12-17

The LHCb collaboration has recently reported the largest CP violation effect from a single amplitude, as well other giant asymmetries in several $B$-meson decays into three charmless light mesons. It is also claimed that this predominantly due to $ππ\rightarrow K\bar K$ rescattering final state, particularly 1 1.5 GeV region. In these analyses amplitude by default estimated $ππ$ elastic scattering and does not describe existing data. Here we show how recent model-independent dispersive...

10.48550/arxiv.2210.08354 preprint EN other-oa arXiv (Cornell University) 2022-01-01
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