Abstract
Motivated by the shift in experimental attention towards electroweak supersymmetric particle production at the CERN LHC, we update in this paper our precision predictions at next-to-leading order of perturbative QCD matched to resummation at the next-to-leading logarithmic accuracy for direct slepton pair production in proton-proton collisions. Simplified models, now commonly adopted by the experimental collaborations for selectrons and smuons as well as mixing staus, are used as benchmarks for total cross sections at achieved and future center-of-mass energies. They are presented together with the corresponding scale and parton density uncertainties in graphical and tabular form for future reference. Using modern Monte Carlo techniques, we also reanalyze recent ATLAS and CMS slepton searches in light of our precision cross sections and for various assumptions on the decomposition of the sleptons and their neutralino decay products.
Highlights
ATLAS and CMS collaborations have mainly focused on dedicated analyses of signatures arising from the strong production of squarks and gluinos, the partners of the strongly interacting quarks and gluons
Motivated by the shift in experimental attention towards electroweak supersymmetric particle production at the CERN LHC, we update in this paper our precision predictions at next-to-leading order of perturbative QCD matched to resummation at the next-to-leading logarithmic accuracy for direct slepton pair production in proton-proton collisions
It has been shown that the weak channels can be interesting probes for distinguishing minimal from non-minimal supersymmetry [17,18,19,20,21] and could provide an explanation for the recent anomalous multilepton events observed by the CMS collaboration [22]
Summary
In order to probe the usually large parameter spaces of several beyond the Standard Model theories simultaneously, simplified production and decay schemes have been developed In this approach, model-independent search strategies are designed on the basis of models consisting of extensions of the Standard Model with minimal additions in terms of particles and interactions. Inspired by the constrained version of the Minimal Supersymmetric Standard Model (MSSM), sleptonsare assumed to be light and always decay in a flavor-conserving way into the lightest supersymmetric particle, taken as the lightest neutralino χ01, and the corresponding Standard Model lepton This pattern, illustrated, has motivated several experimental analyses where sleptons are searched for in final states comprised of a same-flavor lepton pair produced in association with missing energy [10, 11, 15].
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