| CMS Note | |
| Report number | CMS-CR-2026-046 |
| Title | New measurements of single top and $\mathrm{t \bar{t}}$ production at ATLAS and CMS |
| Author(s) | Jeppe, Laurids (CERN) |
| Publication | 2026 |
| Collaboration | ATLAS and CMS Collaborations |
| Imprint | 16 Apr 2026 |
| Number of pages | 5 |
| Presented at | 60th Rencontres de Moriond on QCD and High Energy Interactions, La Thuile, It, 22 - 29 Mar 2026 |
| Subject category | Detectors and Experimental Techniques |
| Accelerator/Facility, Experiment | CERN LHC ; ATLAS,CMS |
| Keywords | Physics |
| Abstract | Recent measurements of single top and $\mathrm{t \bar{t}}$ production at the ATLAS and CMS experiments are summarized. Topics covered are a measurement of $t$-channel single top production at $\sqrt{s} = 5.02\,\mathrm{TeV}$, differential $t$-channel cross sections at $\sqrt{s} = 13\,\mathrm{TeV}$, $\mathrm{WbW\bar{b}}$ differential cross sections in the dilepton and lepton+jets channels probing on- and off-shell top contributions, the most precise inclusive $\mathrm{t \bar{t}}$ cross section measurement to date, the first observation of $\mathrm{t \bar{t}}$ production in PbPb collisions at $\sqrt{s_\mathrm{NN}}} = 5.36\,\mathrm{TeV}$, a combined ATLAS+CMS measurement of the $\mathrm{t \bar{t}}$ spin-correlation observable $\Delta \varphi_{\ell\ell}$, and a characterization of the quantum state of the $\mathrm{t \bar{t}}$ system based on the spin density matrix. |
Record created 2026-05-20, last modified 2026-05-20
