22,204 research outputs found
Integrated Land Use Planning and Sustainable Watershed Management
This paper discusses the key issues and concerns regarding sustainable Philippine watershed management. Emphasis is made on the various requisites of a sustainable management with a focus on the critical roles of land use planning.land use planning, land management, watershed
Stop Decay with LSP Gravitino in the final state:
In MSSM scenarios where the gravitino is the lightest supersymmetric particle
(LSP), and therefore a viable dark matter candidate, the stop
could be the next-to-lightest superpartner (NLSP). For a mass spectrum
satisfying: ,
the stop decay is dominated by the 3-body mode . We calculate the stop life-time, including the full
contributions from top, sbottom and chargino as intermediate states. We also
evaluate the stop lifetime for the case when the gravitino can be approximated
by the goldstino state. Our analytical results are conveniently expressed using
an expansion in terms of the intermediate state mass, which helps to identify
the massless limit.
In the region of low gravitino mass ()
the results obtained using the gravitino and goldstino cases turns out to be
similar, as expected. However for higher gravitino masses the results for the lifetime could show a difference
of O(100)\%
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