SciPost Submission Page
Measurements of $t\bar{t}$ in association with charm quarks at 13 TeV with the ATLAS experiment
by Knut Zoch
Submission summary
| Authors (as registered SciPost users): | Knut Zoch |
| Submission information | |
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| Preprint Link: | https://arxiv.org/abs/2411.18209v1 (pdf) |
| Date submitted: | 2024-11-29 11:34 |
| Submitted by: | Zoch, Knut |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | The 17th International Workshop on Top Quark Physics (TOP2024) |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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| Approach: | Experimental |
Abstract
This talk presents the ATLAS Collaboration's first measurement of the inclusive cross-section for top-quark pair production in association with charm quarks. Using the full Run 2 proton-proton collision data sample at $\sqrt{s}$ = 13 TeV, collected with the ATLAS experiment at the LHC between 2015 and 2018, the measurement selects $t\bar{t}$ events with one or two charged leptons and at least one additional jet in the final state. A custom flavour-tagging algorithm is employed to simultaneously identify $b$-jets and $c$-jets. The fiducial cross-sections for $t\bar{t}+{\geq}2c$ and $t\bar{t}+1c$ production are found to largely agree with predictions from various $t\bar{t}$ simulations, though all underpredict the observed values.
Current status:
In refereeing