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Threshold Resummation for Slepton-Pair Production at Hadron Colliders
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Threshold Resummation for Slepton-Pair Production at Hadron Colliders
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We present a first and extensive study of threshold resummation effects for supersymmetric (SUSY) particle production at hadron colliders, focusing on Drell-Yan like slepton-pair and slepton-sneutrino associated production. After confirming the known next-to-leading order (NLO) QCD corrections and generalizing the NLO SUSY-QCD corrections to the case of mixing squarks in the virtual loop contributions, we employ the usual Mellin N-space resummation formalism with the minimal prescription for the inverse Mellin-transform and improve it by resumming 1/N-suppressed and a class of N-independent universal contributions. Numerically, our results increase the theoretical cross sections by 5 to 15% with respect to the NLO predictions and stabilize them by reducing the scale dependence from up to 20% at NLO to less than 10% with threshold resummation.
Forward citations
Cited by 2 Pith papers
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Search for long-lived charginos and $\tau$-sleptons using final states with a disappearing track in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector
No excess found in 137 fb^-1 of 13 TeV pp data; new 95% CL exclusions reach chargino masses up to 880 GeV and tau-sleptons up to 320 GeV at ~1 ns lifetimes.
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Slepton pair production at next-to-leading power
Evaluates next-to-leading power threshold corrections for slepton pair production and finds them significant compared to leading power NLL terms, with underestimated scale errors for large masses.
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