Exploring the LHC Landscape with Dileptons
arXiv:1609.08994
Abstract
The dilepton decay channels provide clean signatures and are an ideal hunting ground for high mass resonant, like Z', or non-resonant, like contact interactions or extra dimensions, searches at the LHC. The production of high invariant mass opposite sign lepton pairs in proton-proton collisions in the Standard Model is dominated by the Drell-Yan process. In addition to this photon or Z exchange mediated mechanism, photons radiated by the incoming protons can collide and produce lepton pairs. In this paper detailed calculations of the Drell-Yan process at next-to-next-to-leading order in QCD and next-to-leading order in the electroweak corrections, augmented with the photon-induced effects, are presented in the typical acceptance of a multi-purpose LHC detector at center of mass energy 13 TeV. Estimates of the expected backgrounds for new physics searches are provided for dilepton invariant masses up to the LHC kinematic limit.
25 pages, 2 tables, 13 figures, LaTeX; expanded the results with the new LUXqed_plus_PDF4LHC15 photon PDF set to include the dielectron channel
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- Evidence for Higgs boson decay to a pair of muons
- Search for high-mass resonances in dilepton final states in proton-proton collisions at 13 TeV
- Search for the Higgs boson decaying to two muons in proton-proton collisions at 13 TeV
- Search for contact interactions and large extra dimensions in the dilepton mass spectra from proton-proton collisions at 13 TeV
- Study of Drell-Yan dimuon production in proton-lead collisions at 8.16 TeV
- The effect of real and virtual photons in the di-lepton channel at the LHC