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A threshold-improved narrow-width approximation for BSM physics

Authors
Publication date
14 April 2008
Publisher
'IOP Publishing'
Doi
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    Abstract

    A modified narrow-width approximation that allows for O(Gamma/M)-accurate predictions for resonant particle decay with similar intermediate masses is proposed and applied to MSSM processes to demonstrate its importance for searches for particle physics beyond the Standard Model.Comment: 10 pages, 5 figures, version to appear in JHE

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