Seminarium Teorii Oddziaływań Elementarnych
2006/2007 | 2007/2008 | 2008/2009 | 2009/2010 | 2010/2011 | 2011/2012 | 2012/2013 | 2013/2014 | 2014/2015 | 2015/2016 | 2016/2017
2013-10-28 (Poniedziałek)
Francesco Giacosa (ITP, J. W. Goethe University, Frankfurt am Main, Germany)
Decays in quantum mechanics and quantum field theory
The description of the decay law and its link to the energy distribution is shown in quantum mechanics (QM). Deviations from the exponential decay law exist at short and long times; experiments are discussed, in which these deviations have been seen. A related effect is the so-called Quantum Zeno effect, which forbids the decay (or a transition) of a quantum state that is observed at sufficiently small time intervals. Then, the attention is focused on the decay in the context of quantum field theory (QFT): it is shown that deviations from the exponential law occur also here. Similarities and differences with QM are discussed. The important case of the decay, in which more than one decay channel is present, is shown.
2013-10-21 (Poniedziałek)
Krzysztof Rolbiecki (IFT UW, Madryt)
WW excess: on the brink of discovery?
I will discuss an apparent excess in WW pair production cross section measurements at the LHC. I will show how supersymmetric models could account for the excess and present an observable that could disentangle beyond SM contribution using 8 TeV data. Finally, a method to distinguish different supersymmetric contributions will also be shown.
2013-10-14 (Poniedziałek)
Pawel Przewlocki (NCBJ)
News from neutrino experiments
The seminar will be devoted to recent results in neutrino experimental physics presented on summer conferences. I will discuss the most important questions that can be answered by neutrino experiments and present current experimental progress in the field. A special attention will be given to oscillation experiments and recent measurements of theta13 oscillation parameter (and their implications). Some future perspectives will also be discussed.
2013-10-07 (Poniedziałek)
Łukasz Stawarz (UJ, JAXA)
Recent Fermi-LAT Results on Astrophysical Sources of High Energy Radiation
In this talk I will introduce the Fermi-LAT instrument and summarize the recent results of the LAT Collaboration on astrophysical sources of high energy radiation. The summary will include Galactic objects such as binary systems, novae and supernova remnants, but also extragalactic systems such as starforminga and active galaxies, gamma-ray bursts, or finally clusters of galaxies. I will discuss how the recent LAT results provide a novel insight into the problem of the origin of the observed cosmic rays, and particle acceleration in astrophysical plasma in general.
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