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

Understand

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.