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Probes of flavour symmetry and violation with top quarks in ATLAS and CMS

by Miriam Watson

Submission summary

Authors (as registered SciPost users): Miriam Watson
Submission information
Preprint Link: https://arxiv.org/abs/2501.14498v1  (pdf)
Date submitted: 2025-03-10 15:27
Submitted by: Watson, Miriam
Submitted to: SciPost Physics Proceedings
Proceedings issue: The 17th International Workshop on Top Quark Physics (TOP2024)
Ontological classification
Academic field: Physics
Specialties:
  • High-Energy Physics - Experiment
Approaches: Experimental, Computational

Abstract

Results are presented of searches and measurements in the top quark sector by the ATLAS and CMS experiments. These analyses use data from proton-proton collisions at a centre-of-mass energy of 13 TeV, recorded between 2015 and 2018 at the Large Hadron Collider and corresponding to integrated luminosities of 138-140 fb$^{-1}$. Searches are carried out for charged lepton flavour violation, baryon number violation and the presence of neutral heavy leptons. A precise measurement of lepton flavour universality between electrons and muons originating from top quark-antiquark events is also presented.

Current status:
In refereeing

Reports on this Submission

Report #2 by Anonymous (Referee 2) on 2025-4-11 (Invited Report)

Report

Thanks for preparing the nice proceedings. I only have a few minor points that could be addressed.
1.) Abstract: Note that all CMS results are based on 138fb^-1 only and the data were taken between 2016 and 2018. The 2015 dataset is not used by CMS for these results. The same comment also applies to the introduction.
2.) Table 2 mixes the scalar, vector, and tensor limits. Would it make sense to mention in the text how they behave relative to each other? Which limits are the strongest? How different are they? Just a rough statement to make the table more meaningful.
3.) Suggest mapping this (t[d, s, b][u, c]ℓ) explicitly to the tqq'l notation.
4.) "The ATLAS analysis [15] discussed here uses a novel t¯t channel
to search for HNL. " This sounds a bit odd. Suggest saying that HNL's are searched for the first time in one of the top decays in ttbar. I would then suggest dropping "in this first HNL search in the t¯t change" in the last sentence.

Recommendation

Ask for minor revision

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Report #1 by Anonymous (Referee 1) on 2025-3-31 (Invited Report)

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Thanks to the authors for this very nice Proceeding.
The proceedings has been reviewed as see on the arxiv link
https://arxiv.org/pdf/2501.14498v1.
It does not need correction and can be published as is.

Recommendation

Publish (meets expectations and criteria for this Journal)

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