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Mauricio Bustamante (Niels Bohr Institute)18/10/2017, 12:00
Neutrino interactions, though feeble, are tremendously important in particle physics and astrophysics. Yet, at neutrino energies above 350 GeV there has been, up to now, no direct experimental information on neutrino interactions, only predictions. Now, we can measure the neutrino-nucleon cross section above 10 TeV, thanks to the recent discovery of high-energy astrophysical neutrinos by...
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Dr Fe Krauss18/10/2017, 12:15
The IceCube Collaboration has published results on a neutrino flux significantly in excess of the atmospheric background. Due to low atmospheric background at PeV energies, the highest energy events are the most likely ones to be of extraterrestrial origin. We use broadband spectra in the IceCube integration period to calculate the maximum expected number of neutrinos assuming a pion...
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Prof. Manuela Vecchi (São Institute of Physics)18/10/2017, 12:30
Two years ago, the AMS collaboration released the most precise measurement of the cosmic ray positron flux. It confirms that pure secondary predictions fall below the data above 10 GeV, suggesting the presence of a primary component, e.g. annihilations of WIMPs dark matter. Most analyses have focused on the high-energy part of the spectrum, disregarding the GeV energy region where cosmic ray...
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Mr Dimitrios Kantzas (University of Amsterdam)18/10/2017, 12:45
The dominant models that can describe the non - thermal radiation by high energy astrophysical objects, can be divided into two categories, i.e. the leptonic and the hadronic ones. The former one suggests that the high energy radiation is produced by physical processes associated with a population of highly relativistic electrons. On the other hand, the hadronic model assumes that the observed...
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Dr Salumbides Edcel (Vrije Universiteit Amsterdam)18/10/2017, 13:00
Molecular hydrogen has been identified as a search ground for physics beyond the Standard Model. This is complementary to searches motivated by high-energy and astroparticle physics, as we search for subtle effects at the low-energy scale in the spectra of simple molecules. The quantum level structure of the hydrogen molecule can now be calculated to very high precision. These theoretical...
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Prof. Antonio Capone18/10/2017, 13:15
ANTARES, the deep-underwater Cherenkov neutrino telescope in the Northern hemisphere, has been taking data continuously since 2007. Its primary goal is the search for astrophysical neutrinos in the TeV-PeV range. After the discovery of a cosmic neutrino diffuse flux by the IceCube telescope, ANTARES has searched for neutrino sources in the Southern Sky at TeV energies and set constraints on...
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