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arXiv · 1211.3408

Finite-width effects on threshold corrections to squark and gluino production

Pietro Falgari·Christian Schwinn·Christopher Wever
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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 (Gamma/m < 5%) 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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Pietro Falgari, Christian Schwinn, Christopher Wever. 2012-11-14. Finite-width effects on threshold corrections to squark and gluino production. https://doi.org/10.1007/jhep01(2013)085

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