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A flat Friedmann-Robertson-Walker universe dominated by a cosmological constant (Λ) and cold dark matter (CDM) has been the working model preferred by cosmologists since the discovery of cosmic acceleration1,2. However, tensions of various degrees of significance are known to be present among existing datasets within the ΛCDM framework3-11. In

The cross section for the production of single top quarks in the t channel is measured in proton-proton collisions at 13TeV with the CMS detector at the LHC. The analyzed data correspond to an integrated luminosity of 2.2fb-1. The event selection requires one muon and two jets where one of the jets is identified as originating from a bottom quark

Desde el trabajo publicado en 1975 por Jöel Le Gall en el que analizaba la orientación de un número de ciudades romanas, se han sucedido varios estudios enfocados a conocer qué patrones siguen esos planos urbanos y si atienden a alguna motivación, de tipo simbólico o no. Sin embargo, el análisis llevado a cabo por Le Gall (1975) cuenta con varias

JEM-EUSO is a space mission designed to investigate Ultra-High Energy Cosmic Rays and Neutrinos (E > 5 ṡ 1019 eV) from the International Space Station (ISS). Looking down from above its wide angle telescope is able to observe their air showers and collect such data from a very wide area. Highly specific trigger algorithms are needed to drastically

Spontaneous breaking of Lorentz symmetry at energies on the order of the Planck energy or lower is predicted by many quantum gravity theories, implying non-trivial dispersion relations for the photon in vacuum. Consequently, gamma-rays of different energies, emitted simultaneously from astrophysical sources, could accumulate measurable differences