Des astronomes de Saint Louis, Missouri, avaient observé uns particule de matière non identifiée traversant uns couche superficielle du manteau terrestre. Ils suggèrent que celle-ci, qu’ils nomment la particule fantôme, soit un neutrino. Par la suite cependant, elle fut supposée être quelque chose de plus intrigant, une particule de matière noire traversant le cosmos.t
Les astronomes de Saint Louis, suggèrent qu’il puisse s’agir non d’un neutrino mais d’une particule de matière noire s’écrasant sur la Terre. L’hypothèse aurait été, si importante que l’on pris des dispositions pour en observer d’autres .Mais rien tel n’a pu être relevé aujourd’hui.
[28 May 2025]
`Dark’ Matter Effect as a Novel Solution to the KM3-230213A Puzzle
P. S. Bhupal Dev, others
The recent KM3NeT observation of the
event KM3-230213A is puzzling because IceCube with much larger effective area times exposure has not found any such events. We propose a novel solution to this conundrum in terms of dark matter (DM) scattering in the Earth’s crust. We show that intermediate dark-sector particles that decay into muons are copiously produced when high-energy (
) DM propagates through a sufficient amount of Earth overburden. The same interactions responsible for DM scattering in Earth also source the boosted DM flux from a high-luminosity blazar. We address the non-observation of similar events at IceCube via two examples of weakly coupled long-lived dark sector scenarios that satisfy all the lab-based constraints. We calculate the corresponding dark sector cross sections, lifetimes and blazar luminosities required to yield one event at KM3NeT, and also predict the number of IceCube events for these parameters that can be tested very soon. Our proposed DM explanation of the event can also be distinguished from a neutrino-induced event in future high-energy neutrino flavor analyses, large-scale DM direct detection experiments, as well as at future colliders.
Europe Solidaire 