Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/140260
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Type: | Journal article |
Title: | Searches for exclusive Higgs and Z boson decays into a vector quarkonium state and a photon using 139 fb−¹ of ATLAS √s = 13 TeV proton–proton collision data |
Author: | Aad, G. Abbott, B. Abbott, D.C. Abeling, K. Abidi, S.H. Aboulhorma, A. Abramowicz, H. Abreu, H. Abulaiti, Y. Hoffman, A.C.A. Acharya, B.S. Achkar, B. Bourdarios, C.A. Adamczyk, L. Adamek, L. Addepalli, S.V. Adelman, J. Adiguzel, A. Adorni, S. Adye, T. et al. |
Citation: | European Physical Journal C: Particles and Fields, 2023; 83(9):781-1-781-33 |
Publisher: | Springer Science and Business Media LLC |
Issue Date: | 2023 |
ISSN: | 1434-6044 1434-6052 |
Statement of Responsibility: | The Atlas Collaboration … G. Aad … E. K. Filmer … P. Jackson … A. X. Y. Kong … H. Potti … E.X.L. Ting … M. J. White … et al. |
Abstract: | Searches for the exclusive decays of Higgs and Z bosons into a vector quarkonium state and a photon are performed in the μ+μ− γ final state with a proton– proton collision data sample corresponding to an integrated luminosity of 139 fb−1 collected at √s = 13 TeV with the ATLAS detector at the CERN Large Hadron Collider. The observed data are compatible with the expected backgrounds. The 95% confidence-level upper limits on the branching fractions of the Higgs boson decays into J/ψ γ , ψ(2S) γ , and ϒ(1S, 2S, 3S) γ are found to be 2.0 × 10−4, 10.5×10−4, and (2.5, 4.2, 3.4)×10−4, respectively, assuming Standard Model production of the Higgs boson. The corresponding 95% CL upper limits on the branching fractions of the Z boson decays are 1.2 × 10−6, 2.4 × 10−6, and (1.1, 1.3, 2.4) × 10−6. An observed 95% CL interval of (−133, 175) is obtained for the κc/κγ ratio of Higgs boson coupling modifiers, and a 95% CL interval of (−37, 40) is obtained for κb/κγ. |
Keywords: | Higgs and Z bosons |
Rights: | © CERN for the benefit of the ATLAS collaboration 2023. 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. To view a copy of this licence, visit http://creativecomm ons.org/licenses/by/4.0/. Funded by SCOAP3 |
DOI: | 10.1140/epjc/s10052-023-11869-1 |
Grant ID: | ARC |
Published version: | http://dx.doi.org/10.1140/epjc/s10052-023-11869-1 |
Appears in Collections: | Physics publications |
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File | Description | Size | Format | |
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hdl_140260.pdf | Published version | 6.03 MB | Adobe PDF | View/Open |
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