The Drell-Yan process at NNLL′+NNLO using rapidity dependent jet vetoes
Abstract We present results for the Drell-Yan process pp → Z/γ ∗ + X → l + l − + X in the presence of the rapidity dependent jet vetoes T Bj $$ {\mathcal{T}}_{Bj} $$ and T Cj $$ {\mathcal{T}}_{Cj} $$ . These observables provide a tighter veto at central rapidities than at forward rapidities. Our pre...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2025-08-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP08(2025)060 |
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| Summary: | Abstract We present results for the Drell-Yan process pp → Z/γ ∗ + X → l + l − + X in the presence of the rapidity dependent jet vetoes T Bj $$ {\mathcal{T}}_{Bj} $$ and T Cj $$ {\mathcal{T}}_{Cj} $$ . 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). |
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| ISSN: | 1029-8479 |