191 research outputs found

    La desnaturalización del derecho de asilo desde un análisis comprensivo del contexto nacional y europeo en materia de asilo y refugio: propuestas para la mejora de la protección internacional en España

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    This research offers an analysis of the migratory reality that allows the reader to understand the multiple causes that have converged in the rise of restrictive asylum politics and that have affected the refugee status recognition.The stated general objective of this investigation is to denounce the denaturalization of the right to asylum, evidencing the aggressions of which it is the object from a comprehensive analysis of the national and European context in matters of asylum and refuge. The study seeks to generate knowledge that can be disseminated and professionalized by all those actors responsible for the design of public policies on asylum, and it has as ultimate goal being the improvement of the living conditions of asylum seekers in Spain and respect for their human rights.In order to respond correctly to this general objective, four specific goals arose from the following questions: O.E.1. What factors hinder progress towards harmonizing national laws to ensure more equitable and efficient international protection processes at the community level? O.E.2. What are the main impeding practices of access to international protection at border posts and in Spanish territory? O.E.3. Does the Spanish asylum system respond to international protection needs? O.E.4. What are the most immediate priorities to provide adequate coverage for international protection needs? The object of analysis will be approached from a legal-social perspective that starts from the analysis of the European legislation and later enters into the analysis of the deficiencies and challenges posed by the access to international protection at the national level. The Human Rights-Based Approach will be used for this study, conceiving asylum as a fundamental right coherently integrated into a broader framework of justice whose main objective is the effective, universal and non-discriminatory application of Human Rights recognized at the national, community and international level

    La vulneración de los principios de solidaridad y no devolución por parte del Estado español en el ámbito de la protección internacional | The violation of the principles of solidarity and non-refoulement by the Spanish State in the context of international protection

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    Resumen: La presente investigación se centra en la vulneración de los derechos fundamentales de la población refugiada por parte del Estado español a raíz del auge de políticas de asilo y de control migratorio cada vez más restrictivas, basadas en un marcado enfoque securitario de control fronterizo. Se trata de un estudio cualitativo focalizado en el incumplimiento de los principios de solidaridad y no devolución consagrados en la Convención de Ginebra de 1951

    Curso Sistema Político Español (formato power point)

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    Material elaborado en el marco del proyecto de tipo NOU-PID “Docencia adaptada a formato on line de la asignatura Sistema Político Español”, coordinado por el profesor Joaquín Martín Cubas, de las convocatorias del PID Programa de Innovación Docente de la Universitat de València (2020-21) con referencia UV-SFPIE_PID-1353413. El proyecto está enfocado a la elaboración de material y diseño de estrategias para la docencia virtual y la evaluación en línea. Entre sus objetivos se encuentra el diseño de materiales docentes innovadores y entornos de aprendizaje y evaluación en formato on line: audiovisuales, powers, enlaces, prácticas, autoevaluación y foros o webinars.Cada uno de los 22 temas en los que se ha dividido el temario de la asignatura Sistema Político Español se han depositado en abierto en el Repositorio de la Universitat de València en sus tres formatos: Texto, PowerPoint y Grabación audiovisual, siendo sus contenidos responsabilidad exclusiva de los autores firmantes de cada tema. El texto, además del desarrollo del contenido de cada tema, dispone de Bibliografía específica, Enlaces on line de interés, una Sugerencia de Práctica y un Test de autoevaluación con cinco o seis preguntas, cada una de las cuales tiene cuatro respuestas posibles de la cual solo una es correcta.Each of the 22 topics into which the syllabus of the subject Spanish Political System has been divided have been deposited openly in the Repository of the University of València in its three formats: Text, PowerPoint and Audiovisual recording, their contents being the sole responsibility of the signing authors of each topic. The text, in addition to the development of the content of each topic, it has specific Bibliography, on-line links of interest, a Practice Suggestion and a self-evaluation test with five or six questions, each of which has four possible answers from the which only one is correct

    Curso Sistema Político Español

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    Material elaborado en el marco del proyecto de tipo NOU-PID “Docencia adaptada a formato on line de la asignatura Sistema Político Español”, coordinado por el profesor Joaquín Martín Cubas, de las convocatorias del PID Programa de Innovación Docente de la Universitat de València (2020-21) con referencia UV-SFPIE_PID-1353413. El proyecto está enfocado a la elaboración de material y diseño de estrategias para la docencia virtual y la evaluación en línea. Entre sus objetivos se incluye el diseño de materiales docentes innovadores y entornos de aprendizaje y evaluación en formato on line: audiovisuales, powers, enlaces, prácticas, autoevaluación y foros o webinars.Cada uno de los 22 temas en los que se ha dividido el temario de la asignatura Sistema Político Español se han depositado en abierto en el Repositorio de la Universitat de València en sus tres formatos: Texto, PowerPoint y Grabación audiovisual, siendo sus contenidos responsabilidad exclusiva de los autores firmantes de cada tema. El texto, además del desarrollo del contenido de cada tema, viene acompañado de Bibliografía específica, Enlaces on line de interés, una Sugerencia de Práctica y un Test de autoevaluación con cinco o seis preguntas, cada una de las cuales tiene cuatro respuestas posibles de la cual solo una es correcta.Each of the 22 topics into which the syllabus of the subject Spanish Political System has been divided have been deposited openly in the Repository of the University of València in its three formats: Text, PowerPoint and Audiovisual recording, their contents being the sole responsibility of the signing authors of each topic. The text, in addition to the development of the content of each topic, it has specific Bibliography, on-line links of interest, a Practice Suggestion and a self-evaluation test with five or six questions, each of which has four possible answers from the which only one is correct

    Helium identification with LHCb

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    International audienceThe identification of helium nuclei at LHCb is achieved using a method based on measurements of ionisation losses in the silicon sensors and timing measurements in the Outer Tracker drift tubes. The background from photon conversions is reduced using the RICH detectors and an isolation requirement. The method is developed using pppp collision data at s=13TeV\sqrt{s}=13\,{\rm TeV} recorded by the LHCb experiment in the years 2016 to 2018, corresponding to an integrated luminosity of 5.5fb15.5\,{\rm fb}^{-1}. A total of around 10510^5 helium and antihelium candidates are identified with negligible background contamination. The helium identification efficiency is estimated to be approximately 50%50\% with a corresponding background rejection rate of up to O(1012)\mathcal O(10^{12}). These results demonstrate the feasibility of a rich programme of measurements of QCD and astrophysics interest involving light nuclei

    Charge-dependent curvature-bias corrections using a pseudomass method

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    International audienceMomentum measurements for very high momentum charged particles, such as muons from electroweak vector boson decays, are particularly susceptible to charge-dependent curvature biases that arise from misalignments of tracking detectors. Low momentum charged particles used in alignment procedures have limited sensitivity to coherent displacements of such detectors, and therefore are unable to fully constrain these misalignments to the precision necessary for studies of electroweak physics. Additional approaches are therefore required to understand and correct for these effects. In this paper the curvature biases present at the LHCb detector are studied using the pseudomass method in proton-proton collision data recorded at centre of mass energy s=13\sqrt{s}=13 TeV during 2016, 2017 and 2018. The biases are determined using Zμ+μZ\to\mu^+\mu^- decays in intervals defined by the data-taking period, magnet polarity and muon direction. Correcting for these biases, which are typically at the 10410^{-4} GeV1^{-1} level, improves the Zμ+μZ\to\mu^+\mu^- mass resolution by roughly 20% and eliminates several pathological trends in the kinematic-dependence of the mean dimuon invariant mass

    Measurement of forward charged hadron flow harmonics in peripheral PbPb collisions at sNN=5.02\sqrt{s_{NN}}=5.02 TeV with the LHCb detector

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    International audienceFlow harmonic coefficients, vnv_n, which are the key to studying the hydrodynamics of the quark-gluon plasma (QGP) created in heavy-ion collisions, have been measured in various collision systems, kinematic regions, and using various particle species. The study of flow harmonics in a wide pseudorapidity range is particularly valuable to understand the temperature dependence of the shear viscosity to entropy density ratio of the QGP. This paper presents the first LHCb results of the second- and the third-order flow harmonic coefficients of charged hadrons as a function of transverse momentum in the forward region, corresponding to pseudorapidities between 2.0 and 4.9, using the data collected from PbPb collisions in 2018 at a center-of-mass energy of 5.025.02 TeV. The coefficients measured using the two-particle angular correlation analysis method are smaller than the central-pseudorapidity measurements at ALICE and ATLAS from the same collision system but share similar features

    Observation of Λb0Λc+Dˉ()0K\Lambda_{b}^{0} \to \Lambda_{c}^{+} \bar{D}^{(*)0} K^{-} and Λb0Λc+Ds\Lambda_{b}^{0} \to \Lambda_{c}^{+} D_{s}^{*-} decays

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    International audienceThe decays Λb0Λc+Dˉ()0K\Lambda_b^0 \to \Lambda_c^+\bar{D}^{(*)0}K^- and Λb0Λc+Ds\Lambda_b^0 \to \Lambda_c^+ D_s^{*-} are observed for the first time, in proton-proton collision data at s=13\sqrt{s}=13TeV corresponding to an integrated luminosity of 5.4 fb1{}^{-1} collected with the LHCb detector. Their ratios of branching fractions with respect to the Λb0 ⁣Λc+Ds\Lambda_b^0\!\to\Lambda_c^+\mathrm{D}_s^- mode are measured to be \begin{align*} \begin{split} \frac{\mathcal{B}(\Lambda_b^0 \to \Lambda_c^+\bar{D}^0 K^-)}{\mathcal{B}(\Lambda_b^0 \to \Lambda_c^+ D_s^-)} & = 0.1908 {}_{-0.0034}^{+0.0036} {}_{-0.0018}^{+0.0016} \pm 0.0038 \\ \frac{\mathcal{B}(\Lambda_b^0 \to \Lambda_c^+\bar{D}^{*0} K^-)}{\mathcal{B}(\Lambda_b^0 \to \Lambda_c^+ D_s^-)} & = 0.589 {}_{-0.017}^{+0.018} {}_{-0.018}^{+0.017} \pm 0.012 \\ \frac{\mathcal{B}(\Lambda_b^0 \to \Lambda_c^+ D_s^{*-})}{\mathcal{B}(\Lambda_b^0 \to \Lambda_c^+ D_s^-)} & = 1.668 \pm 0.022 {}_{-0.055}^{+0.061}\ , \end{split} \end{align*} where the first uncertainties are statistical, the second systematic, and the third, for the Λb0Λc+Dˉ()0K\Lambda_b^0 \to \Lambda_c^+ \bar{D}^{(*)0} K^- decays, are due to the uncertainties on the branching fractions of the DsKK+πD_s^- \to K^- K^+ \pi^- and Dˉ0K+π\bar{D}^0 \to K^+\pi^- decay modes. The measured branching fractions probe factorization assumptions in effective theories and provide the normalization for future pentaquark searches in Λb0Λc+Dˉ()0K\Lambda_b^0 \to \Lambda_c^+ \bar{D}^{(*)0}K^- decay channels

    Tracking of charged particles with nanosecond lifetimes at LHCb

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    A method is presented to reconstruct charged particles with lifetimes between 10 ps and 10 ns, which considers a combination of their decay products and the partial tracks created by the initial charged particle. Using the Ξ\Xi^- baryon as a benchmark, the method is demonstrated with simulated events and proton-proton collision data at s=13\sqrt{s}=13 TeV, corresponding to an integrated luminosity of 2.0 fb1{}^{-1} collected with the LHCb detector in 2018. Significant improvements in the angular resolution and the signal purity are obtained. The method is implemented as part of the LHCb Run 3 event trigger in a set of requirements to select detached hyperons. This is the first demonstration of the applicability of this approach at the LHC, and the first to show its scaling with instantaneous luminosity

    Search for Bc+π+μ+μB_c^+\to\pi^+\mu^+\mu^- decays and measurement of the branching fraction ratio B(Bc+ψ(2S)π+)/B(Bc+J/ψπ+){\cal B}(B_c^+\to\psi(2S)\pi^+)/{\cal B}(B_c^+\to J/\psi \pi^+)

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    International audienceThe first search for nonresonant Bc+π+μ+μB_c^+\to\pi^+\mu^+\mu^- decays is reported. The analysis uses proton-proton collision data collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9 fb1^{-1}. No evidence for an excess of signal events over background is observed and an upper limit is set on the branching fraction ratio B(Bc+π+μ+μ)/B(Bc+J/ψπ+)<2.1×104{\cal B}(B_c^+\to\pi^+\mu^+\mu^-)/{\cal B}(B_c^+\to J/\psi \pi^+) < 2.1\times 10^{-4} at 90%90\% confidence level. Additionally, an updated measurement of the ratio of the Bc+ψ(2S)π+B_c^+\to\psi(2S)\pi^+ and Bc+J/ψπ+B_c^+\to J/\psi \pi^+ branching fractions is reported. The ratio B(Bc+ψ(2S)π+)/B(Bc+J/ψπ+){\cal B}(B_c^+\to\psi(2S)\pi^+)/{\cal B}(B_c^+\to J/\psi \pi^+) is measured to be 0.254±0.018±0.003±0.0050.254\pm 0.018 \pm 0.003 \pm 0.005, where the first uncertainty is statistical, the second systematic, and the third is due to the uncertainties on the branching fractions of the leptonic J/ψJ/\psi and ψ(2S)\psi(2S) decays. This measurement is the most precise to date and is consistent with previous LHCb results
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