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Search for anomalies in vector-boson fusion production of the Higgs boson in H(→ γγ)jj events using 164 fb−1 of pp collision data collected at s=13.6 TeV with the ATLAS detector.

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Title: Search for anomalies in vector-boson fusion production of the Higgs boson in H(→ γγ)jj events using 164 fb−1 of pp collision data collected at s=13.6 TeV with the ATLAS detector.
Authors: Aad, G., Aakvaag, E., Abbott, B., Abdelhameed, S., Abeling, K., Abicht, N. J., Abidi, S. H., Aboelela, M., Aboulhorma, A., Abramowicz, H., Acharya, B. S., Ackermann, A., Adam Bourdarios, C., Adamczyk, L., Addepalli, S. V., Addison, M. J., Adelman, J., Adiguzel, A., Adye, T., Affolder, A. A.
Source: Journal of High Energy Physics; Sep2026, Vol. 2026 Issue 9, p1-55, 55p
Subject Terms: Higgs bosons, Artificial neural networks, Particle detectors, Angular distribution (Nuclear physics), Photons
Abstract: This article details two studies of Higgs boson properties using the vector-boson fusion production mode and the γγjj final state. Both efforts are based on a data sample corresponding to 164 fb−1 of s = 13.6 TeV proton-proton collisions recorded by the ATLAS experiment at the Large Hadron Collider. The first study employs matrix-element-based optimal observables to constrain CP-odd couplings beyond the Standard Model within the Standard Model Effective Field Theory framework, expressed in the Warsaw basis. The second study exploits angular distributions to probe the Higgs boson's couplings to longitudinally and transversely polarised W and Z bosons in the production of the Higgs boson. To maximise the sensitivity, the constraints of the CP-odd couplings are combined with those from a previous analysis performed in γγjj events in a data sample of proton-proton collisions at s = 13 TeV, corresponding to an integrated luminosity of 140 fb−1. A significant improvement with respect to the previous analysis is achieved through the implementation of a new neural-network-based classification algorithm. All measurements are in agreement with the Standard Model prediction of a CP-even Higgs boson with the expected relative coupling strengths to longitudinally and transversely polarised vector bosons. [ABSTRACT FROM AUTHOR]
Copyright of Journal of High Energy Physics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  – Url: https://dx.doi.org/doi:10.1007/JHEP09%282026%29209
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  Data: Search for anomalies in vector-boson fusion production of the Higgs boson in H(→ γγ)jj events using 164 fb<superscript>−1</superscript> of pp collision data collected at s=13.6 TeV with the ATLAS detector.
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  Data: <searchLink fieldCode="AR" term="%22Aad%2C+G%2E%22">Aad, G.</searchLink><br /><searchLink fieldCode="AR" term="%22Aakvaag%2C+E%2E%22">Aakvaag, E.</searchLink><br /><searchLink fieldCode="AR" term="%22Abbott%2C+B%2E%22">Abbott, B.</searchLink><br /><searchLink fieldCode="AR" term="%22Abdelhameed%2C+S%2E%22">Abdelhameed, S.</searchLink><br /><searchLink fieldCode="AR" term="%22Abeling%2C+K%2E%22">Abeling, K.</searchLink><br /><searchLink fieldCode="AR" term="%22Abicht%2C+N%2E+J%2E%22">Abicht, N. J.</searchLink><br /><searchLink fieldCode="AR" term="%22Abidi%2C+S%2E+H%2E%22">Abidi, S. H.</searchLink><br /><searchLink fieldCode="AR" term="%22Aboelela%2C+M%2E%22">Aboelela, M.</searchLink><br /><searchLink fieldCode="AR" term="%22Aboulhorma%2C+A%2E%22">Aboulhorma, A.</searchLink><br /><searchLink fieldCode="AR" term="%22Abramowicz%2C+H%2E%22">Abramowicz, H.</searchLink><br /><searchLink fieldCode="AR" term="%22Acharya%2C+B%2E+S%2E%22">Acharya, B. S.</searchLink><br /><searchLink fieldCode="AR" term="%22Ackermann%2C+A%2E%22">Ackermann, A.</searchLink><br /><searchLink fieldCode="AR" term="%22Adam+Bourdarios%2C+C%2E%22">Adam Bourdarios, C.</searchLink><br /><searchLink fieldCode="AR" term="%22Adamczyk%2C+L%2E%22">Adamczyk, L.</searchLink><br /><searchLink fieldCode="AR" term="%22Addepalli%2C+S%2E+V%2E%22">Addepalli, S. V.</searchLink><br /><searchLink fieldCode="AR" term="%22Addison%2C+M%2E+J%2E%22">Addison, M. J.</searchLink><br /><searchLink fieldCode="AR" term="%22Adelman%2C+J%2E%22">Adelman, J.</searchLink><br /><searchLink fieldCode="AR" term="%22Adiguzel%2C+A%2E%22">Adiguzel, A.</searchLink><br /><searchLink fieldCode="AR" term="%22Adye%2C+T%2E%22">Adye, T.</searchLink><br /><searchLink fieldCode="AR" term="%22Affolder%2C+A%2E+A%2E%22">Affolder, A. A.</searchLink>
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  Data: Journal of High Energy Physics; Sep2026, Vol. 2026 Issue 9, p1-55, 55p
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– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This article details two studies of Higgs boson properties using the vector-boson fusion production mode and the γγjj final state. Both efforts are based on a data sample corresponding to 164 fb<superscript>−1</superscript> of s = 13.6 TeV proton-proton collisions recorded by the ATLAS experiment at the Large Hadron Collider. The first study employs matrix-element-based optimal observables to constrain CP-odd couplings beyond the Standard Model within the Standard Model Effective Field Theory framework, expressed in the Warsaw basis. The second study exploits angular distributions to probe the Higgs boson's couplings to longitudinally and transversely polarised W and Z bosons in the production of the Higgs boson. To maximise the sensitivity, the constraints of the CP-odd couplings are combined with those from a previous analysis performed in γγjj events in a data sample of proton-proton collisions at s = 13 TeV, corresponding to an integrated luminosity of 140 fb<superscript>−1</superscript>. A significant improvement with respect to the previous analysis is achieved through the implementation of a new neural-network-based classification algorithm. All measurements are in agreement with the Standard Model prediction of a CP-even Higgs boson with the expected relative coupling strengths to longitudinally and transversely polarised vector bosons. [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of High Energy Physics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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