We have over 12,000 students, from over 100 countries, within one of the safest campuses in the UK


97% of Lancaster students go into work or further study within six months of graduating

Home > Research > Publications & Outputs > Gravitino production from reheating in split su...
View graph of relations

« Back

Gravitino production from reheating in split supersymmetry

Research output: Contribution to journalJournal article


Article number043505
<mark>Journal publication date</mark>12/10/2004
<mark>Journal</mark>Physical Review D – Particles and Fields
Number of pages5
<mark>Original language</mark>English


We discuss gravitino production from reheating in models where the splitting between particle and sparticle masses can be larger than TeV, as naturally arising in the context of split supersymmetry. We show that such a production typically dominates over thermal contributions arising from the interactions of gauginos, squarks and sleptons. We constrain the supersymmetry breaking scale of the relevant sector for a given reheat temperature. However the situation changes when the gravitinos dominate the Universe and decay before nucleosynthesis. We briefly describe prospects for a successful baryogenesis and a viable neutralino dark matter in this case.

Bibliographic note

© 2005 The American Physical Society