Measurement of the top-quark Yukawa coupling from t t ¯ production in the lepton+jets final state using pp collisions at s = 13 TeV with the ATLAS detector
The top-quark Yukawa coupling is extracted from the distribution of the top-quark pair ( t t ¯ ) invariant mass in proton-proton collisions using 140 fb−1 of data at s = 13 TeV collected in 2015–2018 by the ATLAS experiment at the Large Hadron Collider. In the region near the production threshold, t...
| Authors: | ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; |
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| Format: | Article |
| Status: | Published version |
| Publication date: | 2026 |
| Country: | Chile |
| Institution: | Pontificia Universidad Católica de Chile |
| Repository: | Pontificia Universidad Católica de Chile |
| OAI Identifier: | oai:repositorio.uc.cl:11534/108135 |
| Online Access: | https://doi.org/10.1007/JHEP01(2026)117 https://repositorio.uc.cl/handle/11534/108135 |
| Access Level: | Open access |
| Keyword: | 510 Matemática física y química |
| _version_ | 1879187275460378624 |
|---|---|
| author | Aad, G. |
| author2 | Aakvaag, E. Abbott, B. Abdelhameed, S. Abeling, K. Abicht, N. J. Abidi, S. H. Aboelela, M. Aboulhorma, A. Abramowicz, H. Abulaiti, Y. Acharya, B. S. Ackermann, A. AdamBourdarios, C. Adamczyk, L. Addepalli, S. V. Addison, M. J. Adelman, J. Adiguzel, A. Diaz Gutiérrez, Marco Aurelio |
| author2_role | author author author author author author author author author author author author author author author author author author author |
| author_browse | Aad, G. Aakvaag, E. Abbott, B. Abdelhameed, S. Abeling, K. Abicht, N. J. Abidi, S. H. Aboelela, M. Aboulhorma, A. Abramowicz, H. Abulaiti, Y. Acharya, B. S. Ackermann, A. AdamBourdarios, C. Adamczyk, L. Addepalli, S. V. Addison, M. J. Adelman, J. Adiguzel, A. Diaz Gutiérrez, Marco Aurelio |
| author_facet | Aad, G. Aakvaag, E. Abbott, B. Abdelhameed, S. Abeling, K. Abicht, N. J. Abidi, S. H. Aboelela, M. Aboulhorma, A. Abramowicz, H. Abulaiti, Y. Acharya, B. S. Ackermann, A. AdamBourdarios, C. Adamczyk, L. Addepalli, S. V. Addison, M. J. Adelman, J. Adiguzel, A. Diaz Gutiérrez, Marco Aurelio |
| author_role | author |
| bitstream_url_str_mv | https://repositorio.uc.cl/dspace/bitstreams/6f84ece0-e95e-4c68-9fd0-979bce5112c8/download https://repositorio.uc.cl/dspace/bitstreams/e6a45b97-41be-41a8-b5f6-8c1fe6c14ca1/download |
| collection | Pontificia Universidad Católica de Chile |
| description | The top-quark Yukawa coupling is extracted from the distribution of the top-quark pair ( t t ¯ ) invariant mass in proton-proton collisions using 140 fb−1 of data at s = 13 TeV collected in 2015–2018 by the ATLAS experiment at the Large Hadron Collider. In the region near the production threshold, the t t ¯ invariant mass spectrum is sensitive to electroweak virtual corrections, including contributions from Higgs boson exchange, thereby providing sensitivity to the top-quark Yukawa coupling. This is the first measurement in ATLAS that aims to obtain this coupling exploiting this approach. The t t ¯ system is reconstructed in the single-lepton final state, requiring exactly one isolated electron or muon and at least four jets with at least two identified as originating from b-quarks. The measured Yukawa coupling is found to be in good agreement with the Standard Model prediction. An upper limit on the top-quark Yukawa coupling strength of Yt < 2.1 relative to the Standard Model prediction is observed at 95% confidence level, consistent with the expected sensitivity. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | CL_30f585ef9d9f5fb99cc6e6b289e3d985 |
| identifier_str_mv | 10.1007/JHEP01(2026)117 |
| institution | Pontificia Universidad Católica de Chile |
| instname_str | Pontificia Universidad Católica de Chile |
| network_acronym_str | CL |
| network_name_str | Chile |
| oai_identifier_str | oai:repositorio.uc.cl:11534/108135 |
| publishDate | 2026 |
| publishDateSort | 2026 |
| reponame_str | Pontificia Universidad Católica de Chile |
| spelling | Measurement of the top-quark Yukawa coupling from t t ¯ production in the lepton+jets final state using pp collisions at s = 13 TeV with the ATLAS detector Aad, G. Aakvaag, E. Abbott, B. Abdelhameed, S. Abeling, K. Abicht, N. J. Abidi, S. H. Aboelela, M. Aboulhorma, A. Abramowicz, H. Abulaiti, Y. Acharya, B. S. Ackermann, A. AdamBourdarios, C. Adamczyk, L. Addepalli, S. V. Addison, M. J. Adelman, J. Adiguzel, A. Diaz Gutiérrez, Marco Aurelio 510 Matemática física y química The top-quark Yukawa coupling is extracted from the distribution of the top-quark pair ( t t ¯ ) invariant mass in proton-proton collisions using 140 fb−1 of data at s = 13 TeV collected in 2015–2018 by the ATLAS experiment at the Large Hadron Collider. In the region near the production threshold, the t t ¯ invariant mass spectrum is sensitive to electroweak virtual corrections, including contributions from Higgs boson exchange, thereby providing sensitivity to the top-quark Yukawa coupling. This is the first measurement in ATLAS that aims to obtain this coupling exploiting this approach. The t t ¯ system is reconstructed in the single-lepton final state, requiring exactly one isolated electron or muon and at least four jets with at least two identified as originating from b-quarks. The measured Yukawa coupling is found to be in good agreement with the Standard Model prediction. An upper limit on the top-quark Yukawa coupling strength of Yt < 2.1 relative to the Standard Model prediction is observed at 95% confidence level, consistent with the expected sensitivity. Journal of High Energy Physics 10.1007/JHEP01(2026)117 1029-8479 https://doi.org/10.1007/JHEP01(2026)117 https://repositorio.uc.cl/handle/11534/108135 |
| spellingShingle | Measurement of the top-quark Yukawa coupling from t t ¯ production in the lepton+jets final state using pp collisions at s = 13 TeV with the ATLAS detector Aad, G. 510 Matemática física y química |
| status_str | publishedVersion |
| title | Measurement of the top-quark Yukawa coupling from t t ¯ production in the lepton+jets final state using pp collisions at s = 13 TeV with the ATLAS detector |
| title_full | Measurement of the top-quark Yukawa coupling from t t ¯ production in the lepton+jets final state using pp collisions at s = 13 TeV with the ATLAS detector |
| title_fullStr | Measurement of the top-quark Yukawa coupling from t t ¯ production in the lepton+jets final state using pp collisions at s = 13 TeV with the ATLAS detector |
| title_full_unstemmed | Measurement of the top-quark Yukawa coupling from t t ¯ production in the lepton+jets final state using pp collisions at s = 13 TeV with the ATLAS detector |
| title_short | Measurement of the top-quark Yukawa coupling from t t ¯ production in the lepton+jets final state using pp collisions at s = 13 TeV with the ATLAS detector |
| title_sort | Measurement of the top-quark Yukawa coupling from t t ¯ production in the lepton+jets final state using pp collisions at s = 13 TeV with the ATLAS detector |
| topic | 510 Matemática física y química |
| topic_facet | 510 Matemática física y química |
| url | https://doi.org/10.1007/JHEP01(2026)117 https://repositorio.uc.cl/handle/11534/108135 |