Eluding the BBN constraints on the stable gravitino

Details Eluding the BBN constraints on the stable gravitino Eluding the BBN constraints on the stable gravitino

2006-05-14

arxiv.org/abs/hep-ph/0605164v1

Phys.Lett.B643:124-126,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 1 figure

Scientific paper

10.1016/j.physletb.2006.07.070

We investigate how late-time entropy production weakens the Big-Bang Nucleosynthesis (BBN) constraints on the gravitino as lightest superparticle with a charged slepton as next-to-lightest superparticle. We find that with a moderate amount of entropy production, the BBN constraints can be eluded for most of the parameter space relevant for the discovery of the gravitino. This is encouraging for experimental tests of supergravity at LHC and ILC.

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