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Articles & Interviews

  • 11/01/2018
    One of the most fascinating mysteries of physics today is the nature of dark matter. We know from many astrophysical and cosmological observations that a large fraction of matter in the universe is non-baryonic, invisible matter, called Dark Matter (DM). DM interacts gravitationally with ordinary matter and remains hidden to us because it doesn’t interact with the electromagnetic spectrum, and is therefore invisible to current instruments.
  • 19/12/2017
    High-energy cosmic rays, i.e., particles traversing the space at energies which are much larger than their rest masses, provide a probe of galactic high-energy processes. They may shed light on the nature of such intriguing phenomenon as Dark Matter (DM) by maybe enabling observation of DM annihilation or decay.
  • 24/11/2017
    Einstein’s theory of relativity interprets gravity as an effect of the curvature of spacetime. As massive objects move, they should produce ripples in spacetime. These ripples would carry energy in the form of gravitational radiation, and thus they were dubbed “gravitational waves” (GWs).
  • 24/10/2017
    The origin of ultra energetic cosmic rays has been a mystery over the past 50 years. On September 2017, the Pierre Auger Observatory reported an anisotropy in the 3 x 10^4 cosmic rays recorded with energies above 8 x 10^8 eV. This anisotropy, detected with a significance above 5.2σ, indicates an extragalactic origin for these particles; that is, they are likely to be produced far away from our galaxy.
  • 11/10/2017
    Dark Matter Day was organized at KIT on October 30, 2017
  • 28/09/2017
    The event was co-organized by the Instituto de Física Corpuscular (IFIC, CSIC-UV), Príncipe Felipe Science Museum, and the European Union through various research grants (FUNDAMENTALCONNECTIONS, InvisiblesPlus RISE and Elusives ITN)
  • 22/09/2017
    Andrea Caputo discussed the “Thermal History of the Universe” and “Matter-Antimatter Asymmetry” in his talks aimed at both researchers and students. The two one hour seminars took place at the University of Calabria on September 26, 2017 and September 27, 2017.
  • 19/09/2017
    On September 14, 2015, the two detectors belonging to the Laser Interferometer Gravitational-wave Observatory (LIGO) independently observed gravitational-waves from two merging black holes [1]. The existence of gravitational-waves was originally postulated by Albert Einstein in 1916 as a necessary consequence of his General Theory of Relativity. Despite search efforts spanning nearly 50 years, this was the first ever detection of gravitational-waves; and also the fi rst ever detection of a merging black hole binary, making this a monumental occasion in world of physics.
  • 04/09/2017
    KIT Open Science Day was organized on June 24, 2017.
  • 04/09/2017
    Professor Laura Baudis gave a talk at TEDxCERN -event on November 5, 2016.
  • 22/05/2017
    Paper of the month:  On the LHCb flavour anomalies
    Recent results by the LHCb experiment provide a pattern of possible deviations from Standard model predictions in the decays of b hadrons mediated by the b → sl+ l− transition, which occurs through loop diagrams with high sensitivity to New Physics. They presented their results on the measurement of the quantity RK∗ = Br(B→K∗ µ+µ−) Br(B→K∗ e+e−) .
  • 25/04/2017
    Neutrinos are truly elusive particles: electrically neutral, very light and weakly interacting. That is why we know less about them than about other particles of the Standard Model of particle physics. The quantum-mechanical phenomena of “neutrino oscillations” have allowed us to understand much better the properties of these particles, but still there are some discrepancies between the experimental results and the commom framework in which the neutrino oscillations are studied. Could these disagreements be understood if we introduce a new, “sterile”, neutrino in our formalism? This is the question studied in this paper of the month.
  • 23/03/2017
    The accepted wisdom is that a large fraction of our Universe is comprised of particle dark matter. Modified models of gravity have been studied for a long time, but the notion of emergent spacetime has given this approach a new direction. Verlinde’s emergent gravity (EG) proposal has revived the discussion, and since last November there have several works in the literature testing this new scenario.
  • 21/02/2017
    Neutrinos are the most elusive particles of the Standard Model (SM) of particle physics. They can be produced in a number of reactions, such as natural radioactivity in the earth (geo-neutrinos), nuclear fission in reactors (reactor neutrinos), supernova explosions (supernova neutrinos), and fusion processes in the Sun (solar neutrinos).
  • 28/11/2016
    A galaxy rotation curve is a plot of the orbital velocities of stars or gas in the observed galaxy versus the radial distance from the galaxy's center. What turns out is that galaxies in our universe seem to achieve too high velocities, such that the gravity generated by the observable matter (stars, gas) could not hold them together. This has led scientists to believe that there is some extra matter, not visible, that generates the extra gravity that galaxies need to stay intact. This extra matter is what we call dark matter, one of the most fascinating problems in physics nowadays. Unlike normal matter, dark matter does not interact with the electromagnetic force; therefore it does not absorb, emit or reflect light and because of this it is very hard to detect. It is possible that it interacts through gravity and weak force (WIMPs-weakly interacting massive particles), but it is also possible that it interacts only through gravity, which would make it even harder to spot.