Abstract
We study the implication of finite squark and gluino decay widths for threshold resummation of squark and gluino production cross sections at the LHC. We find that for a moderate decay width \( \left( {\varGamma /\overline{m}\lesssim 5\%} \right) \) higher-order soft and Coulomb corrections are appropriately described by NLL calculations in the zero-width limit including the contribution from bound-state resonances below threshold, with the remaining uncertainties due to finite-width effects of a similar order as the ambiguities of threshold-resummed higher-order calculations.
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Falgari, P., Schwinn, C. & Wever, C. Finite-width effects on threshold corrections to squark and gluino production. J. High Energ. Phys. 2013, 85 (2013). https://doi.org/10.1007/JHEP01(2013)085
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DOI: https://doi.org/10.1007/JHEP01(2013)085