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

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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 \( \left( {\varGamma /\overline{m}\lesssim 5\%} \right) \) 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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Authors and Affiliations

  1. Institute for Theoretical Physics and Spinoza Institute, Utrecht University, 3508 TD, Utrecht, The Netherlands

    P. Falgari & C. Wever

  2. Albert-Ludwigs Universität Freiburg, Physikalisches Institut, D-79104, Freiburg, Germany

    C. Schwinn

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  1. P. Falgari
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Correspondence to C. Schwinn.

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ArXiv ePrint: 1211.3408

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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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