Conveners
P11 – DARK MATTER
- Javier Redondo (MPP Munich)
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Dr Mirco Cannoni (Departamento de Fisica Aplicada, Facultad de Ciencias Experimentales, Universidad de Huelva, 21071 Huelva, Spain)01/06/2011, 16:30Today a massive experimental effort is addressed towards the direct detection of weakly interacting massive particles (WIMP), that should form the dark matter halo of our galaxy, through elastic scattering with nuclei in underground detectors. We discuss a suitably normalized form of the isospin momentum dependent structure functions entering in the spin-dependent elastic...Go to contribution page
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Koji Ishiwata (Caltech)01/06/2011, 16:45Assuming that the lightest neutral component in an SU(2)L gauge multiplet is the main ingredient of dark matter in the universe, we calculate the elastic scattering cross section of the dark matter with nucleon, which is an important quantity for the direct detection experiments. When the dark matter is a real scalar or a Majorana fermion which has only electroweak gauge interactions, the...Go to contribution page
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Mr Filippo Sala (Scuola Normale Superiore, Pisa)01/06/2011, 17:00The computation of the energy spectra of Standard Model particles originated from the annihilation/decay of dark matter particles is of primary importance in indirect searches of dark matter. In this talk we show how the inclusion of electroweak corrections significantly alter such spectra when the mass of dark matter particles is larger than the electroweak scale: soft electroweak gauge...Go to contribution page
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Dr Andrea De Simone (EPFL)01/06/2011, 17:15Recent analyses have shown that the inclusion of electroweak corrections can alter significantly the energy spectra of Standard Model particles originated from dark matter annihilations. I will consider the important situation where the radiation of electroweak gauge bosons has a substantial influence: a Majorana dark matter particle annihilating into two light fermions. This process is in...Go to contribution page
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33. Conservative upper limits on WIMP annihilation cross section from Fermi extragalactic gamma raysMs Valentina De Romeri (IFIC Valencia)01/06/2011, 17:30The spectrum of an isotropic extra-galactic gamma-ray background (EGB) has been measured by the Fermi-LAT telescope. The EGB is here derived by the subtraction of further contributions, with respect to the Fermi modelling, from undetected point sources and truly diffuse processes. Within the hypothesis that the residual EGB is entirely due to annihilation of galactic dark matter particles,...Go to contribution page
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Giorgio Arcadi (S.I.S.S.A.)01/06/2011, 17:45Non-thermal dark matter generation is an appealing alternative to the standard paradigm of thermal WIMP dark matter. We reconsider non-thermal production mechanisms in a systematic way, and develop a numerical code for accurate computations of the dark matter relic density. We discuss in particular scenarios with long-lived massive states decaying into dark matter particles, appearing...Go to contribution page
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Mr Jasper Hasenkamp (Hamburg U.)01/06/2011, 18:00A small breaking of R-parity reconciles thermal leptogenesis, gravitino dark matter and primordial nucleosynthesis. We find that the same breaking relaxes cosmological bounds on the axion multiplet. Naturally expected spectra become allowed and bounds from late particle decays become so weak that they are superseded by bounds from non-thermal axion production. In this sense, the strong CP...Go to contribution page
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Dr Yue Zhang (ICTP, Trieste)01/06/2011, 18:15