Recent Top Quark Mass Measurements from CMS

A variety of top quark mass measurements has been made in the recent years by the CMS Collaboration. The most recent measurements performed at 8 TeV are reported here, along with a new measurement based on data collected in 2016 at 13 TeV. The current combination of these measurements has a relative uncertainty smaller than 0.3%, making the top quark the most accurately measured quark.Comment: 6 pages, 3 figures, proceedings of the 10th International Workshop on Top Quark Physics 201

Top-quark mass at hadron colliders

Top quarks can be produced abundantly at hadron colliders like the Tevatron at Fermilab and the Large Hadron Collider at CERN, and a variety of measurements of top-quark properties have been gathered in the recent years from four experiments: CDF and D0 at the Tevatron and ATLAS and CMS at the Large Hadron Collider. In this review the most recent results on the measurement of the top-quark mass by the four different collaborations, with various techniques and considering different topologies, are reported.Comment: 19 pages, 16 figures. Presented at the 2013 Lepton Photon Conference, June 24-29, 2013, San Francisco, CA, USA. Representing the ATLAS, CDF, CMS and D0 Collaboration

Gravitational waves in massive gravity theories: waveforms, fluxes and constraints from extreme-mass-ratio mergers

Is the graviton massless? This problem was addressed in the literature at a phenomenological level, using modified dispersion relations for gravitational waves, in linearized calculations around flat space. Here, we perform a detailed analysis of the gravitational waveform produced when a small particle plunges or inspirals into a large non-spinning black hole. Our results should presumably also describe the gravitational collapse to black holes and explosive events such as supernovae. In the context of a theory with massive gravitons and screening, merging objects up to $1\,{\rm Gpc}$ away or collapsing stars in the nearby galaxy may be used to constrain the mass of the graviton to be smaller than $\sim 10^{-23}\,{\rm eV}$, with low-frequency detectors. Our results suggest that the absence of dipolar gravitational waves from black hole binaries may be used to rule out entirely such theories.Comment: Important clarifications on screening and on our results added. Accepted for publication in Physical Review Letter

Chronicle of a Pandemic Foretold. CEPS Policy Insights No 2020-05 / March 2020

In just a few weeks, COVID-19 appeared in China and quickly spread to the rest of the world, including Europe and the United States. Many have rushed to describe the outbreak as a ‘black swan’ – an unpredictable event with extremely severe consequences. However, COVID-19 was not only predictable ex post: it was amply predicted ex ante. This allows us to draw some preliminary lessons: • First, economic policy will need to shift from its current focus on efficiency, towards a greater emphasis on resilience and sustainability. • Second, a more centralised governance to address health emergencies is needed. • Third, Europe should create a centre for the prevention of large-scale risks. • Fourth, digital technologies, if handled with care, can be an important part of both a mitigation and a response strategy. • Fifth, Europe should improve its science advice and communication functions. Finally, there are many ways to pursue enhanced resilience and responsiveness, but not all of them are compatible with sustainability and democratic values. The challenge is to find an adequate policy mix, which safeguards individual rights and liberties, protects the economy, and at the same time strengthens government preparedness for cases of epidemics and pandemics

A Water and Sanitation Needs Assessment for Mekelle City, Ethiopia

This needs assessment identifies the main water and sanitation challenges in Mekelle and the investment levels required to meet Target 10 of United Nations Millenium Development Goals (MDG) 7. There is a need to improve water supply and sanitation, sewage treatment and hygiene education in Mekelle. The findings of this needs assessment indicate that in order to meet MDG targets related to water and sanitation, spending per capita needs to increase from about $10 in 2010 to$12 in 2015. MCI believes that this modest increase made over five years can dramatically improve Mekelle citizens' access to safe water and sanitation as well as the public health citywide and is well worth the incremental additional investment

Lo monstruoso como proyección pesadillesca de lo conocido en Gorodischer y Rey Rosa

Este trabajo presenta un estudio de la creación de mundos monstruosos en dos cuentos de escritores latinoamericanos: “Los embriones del violeta” (1973) de la argentina Angélica Gorodischer y “Cárcel de árboles” (1992) del guatemalteco Rodrigo Rey Rosa. Estos mundos monstruosos pueden entenderse como proyecciones pesadillescas de las realidades socio-culturales con las cuales dialogan los textos. Asimismo, el trabajo estudia cómo en los cuentos se tematiza la escritura y sus limitaciones al momento de narrar las memorias de lo monstruoso

Organizational-communicative impact of collective action "Las Periodistas Paramos" 2018 in Spain

Esta investigación analiza los resultados inmediatos y consecutivos de la acción colectiva “Las Periodistas Paramos” que tuvo lugar en España en 2018, a propósito de la huelga feminista del 8M. Se utilizan la revisión bibliográfica y la entrevista en profundidad para conocer las formas de organización establecidas como consecuencia de LPP, y su aporte al capital social del movimiento feminista. Entre los resultados se obtiene la creación de redes territoriales de mujeres, un cambio de perspectiva en torno a la igualdad de género en los medios de comunicación, así como una contribución efectiva de capital social a la cuarta ola del movimiento feminista.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech