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Threshold resummation for squark-antisquark and gluino-pair production at the LHC

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arxiv 0807.2405 v1 pith:3NCZ76G6 submitted 2008-07-15 hep-ph

Threshold resummation for squark-antisquark and gluino-pair production at the LHC

classification hep-ph
keywords softcrossgluonsquark-antisquarkaccuracyanomalouscalculatedcollisions
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We study the effect of soft gluon emission in the hadroproduction of squark-antisquark and gluino-gluino pairs at the next-to-leading logarithmic (NLL) accuracy within the framework of the minimal supersymmetric model. The one-loop soft anomalous dimension matrices controlling the colour evolution of the underlying hard-scattering processes are calculated. We present the resummed total cross sections and show numerical results for proton-proton collisions at 14 TeV. The size of the NLL contribution to the cross section and the reduction of the scale dependence of the theoretical predictions due to including soft gluon effects are discussed.

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