Speaker
Description
As a consequence of deviations from special relativity, Lorentz-Invariance Violation may affect the propagation of astrophysical neutrinos. In particular, it may introduce an additional shift with respect to the intrinsic time delay between neutrino detection and the signature of another messenger, and the possible faster-than-light component would be subject to decay, affecting the observable flux. Since the neutrino emission of gamma-ray bursts is expected in a relatively short time frame, they are ideal sources for investigating such effects. A positive detection would confirm the emission of neutrinos from these sources and open a yet unexplored territory beyond the standard paradigm.
Data collected by the ANTARES undersea neutrino telescope between 2007 and 2022 were analyzed to identify potential associations with cataloged gamma-ray bursts, taking into account the compatibility between neutrino arrival times and their possible decay. The presentation will detail the unbinned likelihood approach used for this analysis, its results, and the related prospects.
