International forum. an investigation of iron status in blood donors

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Neutralino-Nucleon Cross Section and Charge and Colour Breaking Constraints

We compute the neutralino-nucleon cross section in several supersymmetric scenarios, taking into account all kind of constraints. In particular, the constraints that the absence of dangerous charge and colour breaking minima imposes on the parameter space are studied in detail. In addition, the most recent experimental constraints, such as the lower bound on the Higgs mass, the $b\to s\gamma$ branching ratio, and the muon $g-2$ are considered. The astrophysical bounds on the dark matter density are also imposed on the theoretical computation of the relic neutralino density, assuming thermal production. This computation is relevant for the theoretical analysis of the direct detection of dark matter in current experiments. We consider first the supergravity scenario with universal soft terms and GUT scale. In this scenario the charge and colour breaking constraints turn out to be quite important, and \tan\beta\lsim 20 is forbidden. Larger values of $\tan\beta$ can also be forbidden, depending on the value of the trilinear parameter $A$. Finally, we study supergravity scenarios with an intermediate scale, and also with non-universal scalar and gaugino masses where the cross section can be very large.Comment: Final version to appear in JHE

Research data supporting the publication "Effect of Anionic Lipids on Mammalian Plasma Cell Membrane Properties

This dataset contains the data for the results in this publication on mixed phosphatidylethanolamine/phosphatidylserine bilayers supported on Au(111) electrodes and monolayers at the air/water interface. The measurements included: pressure-area isotherm data, electrochemical data on supported bilayers, in situ infrared spectroscopy (PM-IRRAS) data on supported bilayers, Brewster Angle Microscopy, Grazing Incidence X-ray Diffraction, X-ray Reflectivity and Neutron Reflectivity data on monolayers