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Constraints on Higg...
Constraints on Higgs boson properties using WW*(-> e nu mu nu)jj production in 36.1 fb(-1) of root s=13 TeV pp collisions with the ATLAS detector
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- Aad, G. (author)
- Aix Marseille Univ, CPPM, CNRS IN2P3, Marseille, France.
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- Lund-Jensen, Bengt (author)
- KTH,Partikel- och astropartikelfysik
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- Ohm, Christian (author)
- KTH,Partikel- och astropartikelfysik
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- Ripellino, Giulia (author)
- KTH,Partikel- och astropartikelfysik
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- Shope, David R. (author)
- KTH,Partikel- och astropartikelfysik
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- Strandberg, Jonas (author)
- KTH,Partikel- och astropartikelfysik
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- Zwalinski, L. (author)
- CERN, CH-1211 Geneva 23, Switzerland.
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Aix Marseille Univ, CPPM, CNRS IN2P3, Marseille, France Partikel- och astropartikelfysik (creator_code:org_t)
- 2022-07-18
- 2022
- English.
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In: European Physical Journal C. - : Springer. - 1434-6044 .- 1434-6052. ; 82:7
- Related links:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- This article presents the results of two studies of Higgs boson properties using the WW*(-> e nu mu nu)jj final state, based on a dataset corresponding to 36.1fb(-1) of root s = 13 TeV proton-proton collisions recorded by the ATLAS experiment at the Large Hadron Collider. The first study targets Higgs boson production via gluon-gluon fusion and constrains the CP properties of the effective Higgs-gluon interaction. Using angular distributions and the overall rate, a value of tan (alpha) = 0.0 +/- 0.4(stat.) +/- 0.3(syst.) is obtained for the tangent of the mixing angle for CP-even and CP-odd contributions. The second study exploits the vector-boson fusion production mechanism to probe the Higgs boson couplings to longitudinally and transversely polarised W and Z bosons in both the production and the decay of the Higgs boson; these couplings have not been directly constrained previously. The polarisation-dependent coupling-strength scale factors are defined as the ratios of the measured polarisation-dependent coupling strengths to those predicted by the Standard Model, and are determined using rate and kinematic information to be a(L) = 0.91(-0.18)(+0.10)(stat.)(-0.17)(+0.09)(syst.) and a(T) = 1.2 +/- 0.4(stat.)(-0.3)(+0.2)(syst.). These coupling strengths are translated into pseudo-observables, resulting in kappa(VV) = 0.91(-0.18)(+0.10)(stat.)(-0.17)(+0.09)(syst.) and epsilon(VV) = 0.13(-0.20)(+0.28)(stat.)(-0.10)(+0.08)(syst.). All results are consistent with the Standard Model predictions.
Subject headings
- NATURVETENSKAP -- Fysik -- Subatomär fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Subatomic Physics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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