English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The heavy gravitinos in minimal supergravity (mSUGRA) models couplegravitionally and can naturally be the Superweakly Interacting Massive Particle(SuperWIMP). As plausible candidates for the cold dark matter in the universe,such gravitino SuperWIMPs can naturally evade the current dark matter detectionexperiments due to their superweak couplings. However, this scenario mustsubject to the constraints from the Big Bang nucleosynthesis (BBN) predictionsfor light element abundances as well as the Wilkinson Mircrowave AnisotropyProbe (WMAP) data for the relic density. Our study shows that requiring BBNpredictions to agree with the WMAP data of light element abundances can imposeupper and lower mass bounds for both the gravitino and the next-to-lightestsupersymmetric particle (NLSP). From a scan over the mSUGRA parameter spacesubjected to the BBN constraints and the WMAP data, we find that in theneutralino NLSP case, the low tan-beta (< 40) region as well as the regionaccessible at CERN Large Hadron Colldier (LHC) will be severely restrained.Comment: discussions and refs added (version to appear in EPJC

SuperWIMP dark matter scenario in light of WMAP