Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gravitino Dark Matter with Broken R-parity   Scenarios with gravitino dark matter face potential cosmological problems
induced by the presence of the Next-to-Lightest Supersymmetric Particle (NLSP)
at the time of Big Bang Nucleosynthesis (BBN). A very simple, albeit radical,
solution to avoid all these problems consists on assuming that R-parity is
slightly violated, since in this case the NLSP decays well before the onset of
BBN. Remarkably, even if the gravitino is no longer stable in this scenario, it
still constitutes a very promising dark matter candidate. In this talk we
review the motivations for this scenario and we present a model that naturally
generates R-parity breaking parameters of the right size to produce a
consistent thermal history of the Universe, while satisfying at the same time
all the laboratory and cosmological bounds on R-parity breaking. We also
discuss possible signatures of this scenario at gamma ray observatories and at
colliders.

7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
18
The categories of this paper are: econ
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an