2025/04/08 by Clark, Thomas, Gangal, Shireen, Gaunt, Jonathan R.
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)
paper · doi:10.48550/arxiv.2504.06353
We present results for the Drell-Yan process pp → Z/γ^* + X → l+l- + X in the presence of the rapidity dependent jet vetoes TBj and TCj. These observables provide a tighter veto at central rapidities than at forward rapidities. Our predictions contain a resummation of large logarithms of the veto scale over the hard scale, matched to fixed order in perturbation theory; we present results at both NLL^′+NLO and NNLL^′+NNLO. Uncertainty estimates are provided that contain both resummation and fixed-order uncertainties; we find that using a standard profile scale variation procedure for the former seems to underestimate the uncertainty, particularly at NLL^′+NLO. Consequently, we modify the procedure to avoid cancellation of scale variations between partonic channels, and verify that the uncertainties from this method are reasonable using a simplified version of the Theory Nuisance Parameter (TNP) method. We then find that the uncertainty decreases going from the NLL^′+NLO to the NNLL^′+NNLO predictions, and obtain an uncertainty at the level of 1-3% in the NNLL^′+NNLO predictions when the veto scale is of O(10 GeV).