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Measurement of the $t$-channel single top-quark production cross section at $\sqrt{s}=13$ TeV with the ATLAS detector and interpretations of the measurement
by Maren Stratmann
Submission summary
| Authors (as registered SciPost users): | Maren Stratmann |
| Submission information | |
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| Preprint Link: | https://arxiv.org/abs/2411.12388v1 (pdf) |
| Date submitted: | 2024-11-21 13:28 |
| Submitted by: | Stratmann, Maren |
| 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
The $t$-channel is the dominant production channel for single top-quarks at the LHC. The total cross section of this process is measured by ATLAS in proton-proton collisions at a center-of-mass energy $\sqrt{s}=13$ TeV. The production cross sections for single top-quarks and single top-antiquarks are measured to be $\sigma_{tq}=\text{137}^{+8}_{-8}$ pb and $\sigma_{\bar{t}q}=\text{84}^{+6}_{-5}$ pb. For the combined cross section and the ratio of the cross sections $R_t$, $\sigma_{tq+\bar{t}q}=\text{221}^{+13}_{-13}$ pb and $R_t=\text{1.636}^{+0\text{.}036}_{-0\text{.}034}$ are obtained. As interpretations of the measurement, limits are set on the EFT operator $O_{Qq}^{3,1}$ and on the CKM matrix elements $|V_{td}|$, $|V_{ts}|$ and $|V_{tb}|$.
Current status:
Reports on this Submission
Strengths
The results provide the most precise t-channel single top-quark production cross sections at 13 TeV
Weaknesses
The length of these proceedings do not allow giving details of the analyese performed added as references.
Report
These proceedings described the ATLAS measurement of the t-channel single top-quark at a center-of-mass energy of 13 TeV presented at the TOP2024 conference.
Requested changes
- Place figures after the reference, close to the text where the figures are described.
- Caption figure 1, define Dnn
- Section 2, "A good agreement between the MC simulation and the data is reached." Are all contributions estimated by MC? Figure 2 mentions predictions, if some contributions are data-driven, the sentence needs to be corrected accordingly.
- Section 3.1, mention to what is the binned maximum likelihood fit performed to, is it also in the SRs and Dnn?
- Figure 3, if space permits increase the size of the figures, it is difficult to see the best fit marks.
- Section 4, "The theory predictions calculated at NNLO are in good agreement with the results.", add "except for ABMP and NNPDF3.1"
Recommendation
Ask for minor revision