Publicaciones

  • Charm physics confronts high-p<SUB>T</SUB> lepton tails

    We present a systematic survey of possible short-distance new-physics effects in (semi)leptonic charged- and neutral-current charmed meson decays. Using the Standard Model Effective Field Theory (SMEFT) to analyze the most relevant experimental data at low and high energies, we demonstrate a striking complementarity between charm decays and high

    Fuentes-Martín, Javier et al.

    Fecha de publicación:

    11
    2020
  • Coronal-line forest active galactic nuclei - I. Physical properties of the emission-line regions

    Coronal-line forest (CLiF) active galactic nuclei (AGNs) are characterized by strong high-ionization lines, which contrasts with what is found in most AGNs. Here, we carry out a multiwavelength analysis aimed at understanding the physical processes in the narrow-line region (NLR) of these objects, and at discovering whether they are indeed a

    Cerqueira-Campos, F. C. et al.

    Fecha de publicación:

    11
    2020
  • Detection of the Geminga pulsar with MAGIC hints at a power-law tail emission beyond 15 GeV

    We report the detection of pulsed gamma-ray emission from the Geminga pulsar (PSR J0633+1746) between 15 GeV and 75 GeV. This is the first time a middle-aged pulsar has been detected up to these energies. Observations were carried out with the MAGIC telescopes between 2017 and 2019 using the low-energy threshold Sum-Trigger-II system. After quality

    MAGIC Collaboration et al.

    Fecha de publicación:

    11
    2020