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arXiv · 1310.4827

Super-Razor and Searches for Sleptons and Charginos at the LHC

Matthew R. Buckley·Joseph D. Lykken·Christopher Rogan·Maria Spiropulu
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Abstract

Direct searches for electroweak pair production of new particles at the LHC are a difficult proposition, due to the large background and low signal cross sections. We demonstrate how these searches can be improved by a combination of new razor variables and shape analysis of signal and background kinematics. We assume that the pair-produced particles decay to charged leptons and missing energy, either directly or through a W boson. In both cases the final state is a pair of opposite sign leptons plus missing transverse energy. We estimate exclusion reach in terms of sleptons and charginos as realized in minimal supersymmetry. We compare this super-razor approach in detail to analyses based on other kinematic variables, showing how the super-razor uses more of the relevant kinematic information while achieving higher selection efficiency on signals, including cases with compressed spectra.

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Matthew R. Buckley, Joseph D. Lykken, Christopher Rogan, Maria Spiropulu. 2013-10-17. Super-Razor and Searches for Sleptons and Charginos at the LHC. https://doi.org/10.1103/physrevd.89.055020

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