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Item type:Publication, Underlying event properties in pp collisions at √s = 13 TeV(Springer, 2020-04-01)Abstract This article reports measurements characterizing the Underlying Event (UE) associated with hard scatterings at midrapidity (|η| < 0.8) in pp collisions at $$ \sqrt{s} $$ s = 13 TeV. The hard scatterings are identified by the leading particle, the charged particle with the highest transverse momentum ( $$ {p}_{\mathrm{T}}^{\mathrm{leading}} $$ p T leading ) in the event. Charged-particle number-densities and summed transverse-momentum densities are measured in different azimuthal regions defined with respect to the leading particle direction: Toward, Transverse, and Away. The Toward and Away regions contain the fragmentation products of the hard scatterings in addition to the UE contribution, whereas particles in the Transverse region are expected to originate predominantly from the UE. The study is performed as a function of $$ {p}_{\mathrm{T}}^{\mathrm{leading}} $$ p T leading with three different p T thresholds for the associated particles, $$ {p}_{\mathrm{T}}^{\mathrm{track}} $$ p T track > 0.15, 0.5, and 1.0 GeV/c. The charged-particle density in the Transverse region rises steeply for low values of $$ {p}_{\mathrm{T}}^{\mathrm{leading}} $$ p T leading and reaches a plateau. The results confirm the trend that the charged-particle density in the Transverse region shows a stronger increase with $$ \sqrt{s} $$ s than the inclusive charged-particle density at midrapidity. The UE activity is increased by approximately 20% when going from 7 TeV to 13 TeV pp collisions. The plateau in the Transverse region (5 < $$ {p}_{\mathrm{T}}^{\mathrm{leading}} $$ p T leading < 40 GeV/c) is further characterized by the probability distribution of its charged-particle multiplicity normalized to its average value (relative transverse activity, R T) and the mean transverse momentum as a function of R T. Experimental results are compared to model calculations using PYTHIA 8 and EPOS LHC. The overall agreement between models and data is within 30%. These measurements provide new insights on the interplay between hard scatterings and the associated UE in pp collisions. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Jet-hadron correlations measured relative to the second order event plane in Pb-Pb collisions at sNN =2.76 TeV(American Physical Society, 2020-06-01)The quark gluon plasma produced in ultrarelativistic heavy-ion collisions at the Large Hadron Collider (LHC) can be studied by measuring the modifications of jets formed by hard scattered partons which interact with the medium. We studied these modifications via angular correlations of jets with charged hadrons for jets with momenta $20<{p}_{\mathrm{T}}^{\mathrm{jet}}<40$ GeV/$c$ as a function of the associated particle momentum. The reaction plane fit method is used in this analysis to remove the flow modulated background. The analysis of angular correlations for different orientations of the jet relative to the second order event plane allows for the study of the path length dependence of medium modifications to jets. We present the dependence of azimuthal angular correlations of charged hadrons with respect to the angle of the axis of a reconstructed jet relative to the event plane in Pb-Pb collisions at $\sqrt{{s}_{NN}}$ = 2.76 TeV. The dependence of particle yields associated with jets on the angle of the jet with respect to the event plane is presented. Correlations at different angles relative to the event plane are compared through ratios and differences of the yield. No dependence of the results on the angle of the jet with respect to the event plane is observed within uncertainties, which is consistent with no significant path length dependence of the medium modifications for this observable. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, 2017 Coastal El Niño in Peru: an opportunity to analyze the influence of hazard mitigation plans on local resilience(Elsevier, 2021-01-01)This research proposes an ex post methodology for analyzing the influence of Hazard Mitigation Plans in the level of resilience in localities affected by an extreme event. For verifying its applicability, the case of heavy rainfalls of the 2017 coastal El Niño event in Peru is analyzed. The methodology consists of two analysis levels. The first one correlates the quality of existing plans with damages and recovery rapidity. The second analysis level focuses on one sample of the localities selected for performing a deeper qualitative-territorial analysis. The methodology applicability was verified, and we determined that the reduction of direct damages after an event is correlated to the existence of actions such as land use regulation and the structural reinforcement. Moreover, the identification of those responsible for these processes, the verification of possible financing funds and the estimation of intervention costs positively influence on the reconstruction rapidity. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Multiharmonic correlations of different flow amplitudes in Pb-Pb collisions at sNN = 2.76 TeV(American Physical Society, 2021-08-27)The event-by-event correlations between three flow amplitudes are measured for the first time in Pb-Pb collisions, using higher-order symmetric cumulants. We find that different three-harmonic correlations develop during the collective evolution of the medium when compared to correlations that exist in the initial state. These new results cannot be interpreted in terms of previous lower-order flow measurements since contributions from two-harmonic correlations are explicitly removed in the new observables. A comparison to Monte Carlo simulations provides new and independent constraints for the initial conditions and system properties of nuclear matter created in heavy-ion collisions. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Probability theory(Springer Science+Business Media, 2021-12-11)Probability theory is a branch of mathematical science that deals with the mathematical analysis of random events. Probability is commonly used to describe the mind’s attitude to statements that we are not sure of. Statements usually take the form of “Will a particular event occur?” and the attitude of our minds will be of the form “How confident are we that this event will occur?” Our confidence can be described numerically, which is a value between 0 and 1 that we call probability. The more likely to occur an event is, the more confident we are that it will occur. The focus in this chapter is mainly on probability space, random variable, multi-dimensional probability distribution, expected value, variance, and covariance. - Some of the metrics are blocked by yourconsent settings
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Item type:Publication, Regímenes temporales y fronteras etarias en los circuitos de sociabilidad gay nocturna de Lima(National University of Mar del Plata, 2026-06-26)La sociabilidad gay nocturna en Lima ha recibido atención marginal en la investigación social. Su examen como espacio de regulación temporal y etaria es, en ese contexto, prácticamente inexistente. En este marco, la presente investigación se pregunta cómo se configuran los parámetros etarios en la escena nocturna gay limeña y qué estrategias despliegan los sujetos cuando quedan en desajuste con sus ritmos normativos. En diálogo con los marcos de Halberstam (2005) y Freeman (2010) sobre temporalidad queer, el artículo conceptualiza la noche como una economía temporal que exige aprendizajes situados y fija quién pertenece, cuándo y por cuánto tiempo. Con base en una etnografía y catorce entrevistas a hombres gays, se analiza cómo estos espacios imponen cronologías normativas, incluyendo horarios correctos, secuencias rituales y ritmos corporales, que producen exclusiones por edad. Los hallazgos muestran que el envejecimiento intensifica los desajustes y activa una vigilancia que fetichiza la juventud y sanciona los cuerpos fuera de tiempo. Se propone el concepto de crononormatividad recursiva para pensar cómo escapar del tiempo heteronormativo puede conducir a otro régimen igualmente excluyente, en geografías temporales periféricas del Sur Global donde la escasez de infraestructuras gays restringe las soberanías temporales posibles.ARK-CAICYT: https://id.caicyt.gov.ar/ark://f71sf9aj8 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Privacy Protection aspects of Personal Health Data for Process Mining Projects: A Systematic Literature Review(RELX Group (Netherlands), 2026-01-01)