Accurate Cosmological Parmeters and Supersymmetric Particle Properties

Дата и время публикации : 1998-01-30T16:32:26Z

Авторы публикации и институты :
Pran Nath
R. Arnowitt

Оригинал статьи :http://arxiv.org/abs/hep-ph/9801454v1

Скачать pdf : http://arxiv.org/pdf/hep-ph/9801454v1

Ссылка на журнал-издание: Mod.Phys.Lett.A13:2239-2246,1998
Коментарии к статье: RevTeX 10 pages, 4 figures
Первичная категория: hep-ph

Все категории : hep-ph, astro-ph

Краткий обзор статьи: Future sattelite, balloon and ground based experiments will give precision determinations of the basic cosmological parameters and hence determine the amount of cold dark matter accurately. We consider here two cosmological models, the nuCDM model and the LambdaCDM model, and examine within the framework of supergravity grand unification the effect this will have for these models on supersymmetry searches at accelerators. In the former example the gluino (neutralino) mass has an upper bound of about 720(100) GeV and gaps (forbidden regions) may deveop at lower energies. In the latter case the upper bound occurs at gluino (neutralino) mass of about 520(70) GeV with squarks and selectron becoming light when gluino (neutralino) masses are greater than 420(55) GeV. Both models are sensitive to non-universal soft breaking masses, and show a correlation between large (small) dark matter detector rates and low (high) b -> s+ gamma branching ratio.

Category: Physics