19/11 –
10h: Reunião GLOBES na Sala do Conselho.
11h: Eduardo Sato : Grupo seesaw, Seesaw para todos
Jhon Rosero: Emissao de neutrinos de protoestrelas de neutrons
26/11 Hector Jurkovich Efeitos de Interação não padrão em experimentos de longbaseline
Resumo:
Dark matter with strong self-interactions provides a compelling solution to several small-scale structure puzzles. Under the assumption that the coupling between dark matter and the Standard Model particles is suppressed, such strongly interacting massive particles (SIMPs) allow for a successful thermal freeze-out through N-to-N’ processes, where N dark matter particles annihilate to N’ of them. In the most common scenarios, where dark matter stability is guaranteed by a Z2 symmetry, the seemingly leading annihilating channel, i.e. 3-to-2 process, is forbidden, so the 4-to-2 one dominate the production of the dark matter relic density. Moreover, cosmological observations require that the dark matter sector is colder than the thermal bath of Standard Model particles, a condition that can be dynamically generated via a small portal between dark matter and Standard Model particles, à la freeze-in. This scenario is exemplified in the context of the Singlet Scalar dark matter model.
10/12 Fernando Torres, Tudo que queria saber sobre supernovas
