Precision Drell-Yan Measurements at the LHC and Implications for the Diphoton Excess

Abstract

Precision measurements of the Drell-Yan (DY) cross section at the LHC constrain new physics scenarios that involve new states with electroweak (EW) charges. We analyze these constraints and apply them to models that can address the LHC diphoton excess at 750 GeV. We confront these findings with LEP EW precision tests and show that DY provides stronger constraints than the LEP data. While 8 TeV data can already probe some parts of the interesting region of parameter space, LHC14 results are expected to cover a substantial part of the relevant terrain. We derive the bounds from the existing data, estimate LHC14 reach and compare them to the bounds one gets from LEP and future FCC-ee precision measurements.

21 pages, 7 figures; v2: minor changes

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Cited by in corpus (8)

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• Uncovering the relation of a scalar resonance to the Higgs boson
• Learning from the New Higgs-like Scalar before It Vanishes
• Exotic colored scalars at the LHC
• The Hierarchy Problem and the Top Yukawa: An Alternative to Top Partner Solutions
• Is it $SU(2{)}_{\mathrm{L}}$ or just $U(1{)}_{\mathrm{Y}}$? $750$ GeV di-photon probes of the electroweak nature of new states
• Model Independent Constraints on Charges of New Particles