Journal article
Measurements of observables sensitive to colour reconnection in 𝑡𝑡¯ events with the ATLAS detector at √𝑠 = 13 TeV
- Abstract:
- A measurement of observables sensitive to effects of colour reconnection in top-quark pair-production events is presented using 139 fb−1 of 13 TeV proton–proton collision data collected by the ATLAS detector at the LHC. Events are selected by requiring exactly one isolated electron and one isolated muon with opposite charge and two or three jets, where exactly two jets are required to be b-tagged. For the selected events, measurements are presented for the charged-particle multiplicity, the scalar sum of the transverse momenta of the charged particles, and the same scalar sum in bins of charged-particle multiplicity. These observables are unfolded to the stable-particle level, thereby correcting for migration effects due to finite detector resolution, acceptance and efficiency effects. The particle-level measurements are compared with different colour reconnection models in Monte Carlo generators. These measurements disfavour some of the colour reconnection models and provide inputs to future optimisation of the parameters in Monte Carlo generators.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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- Files:
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(Preview, Version of record, pdf, 7.2MB, Terms of use)
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- Publisher copy:
- 10.1140/epjc/s10052-023-11479-x
- Publisher:
- Springer
- Journal:
- The European Physical Journal C More from this journal
- Volume:
- 83
- Issue:
- 6
- Article number:
- 518
- Publication date:
- 2023-06-20
- Acceptance date:
- 2023-01-20
- DOI:
- EISSN:
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1434-6052
- ISSN:
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1434-6044
- Language:
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English
- Keywords:
- Pubs id:
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1489775
- Local pid:
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pubs:1489775
- Deposit date:
-
2023-07-05
Terms of use
- Copyright holder:
- CERN
- Copyright date:
- 2023
- Rights statement:
- © CERN for the benefit of the ATLAS collaboration 2023. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.
- Licence:
- CC Attribution (CC BY)
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