50 research outputs found

    Dark matter scenarios in the minimal SUSY B-L model

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    We perform a study of the dark matter candidates of a constrained version of the minimal R-parity-conserving supersymmetric model with a gauged U(1)BLU(1)_{B-L}. It turns out that there are four additional candidates for dark matter in comparison to the MSSM: two kinds of neutralino, which either correspond to the gaugino of the U(1)BLU(1)_{B-L} or to a fermionic bilepton, as well as "right-handed" CP-even and -odd sneutrinos. The correct dark matter relic density of the neutralinos can be obtained due to different mechanisms including new co-annihilation regions and resonances. The large additional Yukawa couplings required to break the U(1)BLU(1)_{B-L} radiatively often lead to large annihilation cross sections for the sneutrinos. The correct treatment of gauge kinetic mixing is crucial to the success of some scenarios. All candidates are consistent with the exclusion limits of Xenon100.Comment: 45 pages, 22 figures; v2: extended discussion of direct detection cross section, matches published versio

    Is economics scientific discipline loyal to its own starting points and fundamental principles?

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    The article argues that the economic scientific community, by disregarding the importance of freedom which was essential for its emancipation and market as its key criterion of choice, is disloyal to its own starting points and fundamental principles. By dictating strict methodological rules the neoclassical school has consolidated its monopoly position within economics. The article highlights that this methodological normativism is substantially reducing the diversity of methodological approaches and that such restriction of freedom has become a source of subordination within economic community. The author argues that today a new emancipation is needed, with a strong emphasis on the freedom to forge new approaches and acute awareness of the fact that no theoretical platform can persist without adequate demand for its findings in the science market
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