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Test of CP invariance in vector-boson fusion production of the Higgs boson in the H → ττ channel in proton–proton collisions at √s=13 TeV with the ATLAS detector

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Test of CP invariance in vector-boson fusion production of the Higgs boson in the H → ττ channel in proton–proton collisions at √s=13 TeV with the ATLAS detector. / Collaboration, ATLAS; Barton, A.E.; Bertram, I.A. et al.
In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 805, 135426, 10.06.2020.

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Collaboration ATLAS, Barton AE, Bertram IA, Borissov G, Bouhova-Thacker EV, Fox H et al. Test of CP invariance in vector-boson fusion production of the Higgs boson in the H → ττ channel in proton–proton collisions at √s=13 TeV with the ATLAS detector. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2020 Jun 10;805:135426. doi: 10.1016/j.physletb.2020.135426

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@article{9007f472273546fc8e2d4c1ef61a5998,
title = "Test of CP invariance in vector-boson fusion production of the Higgs boson in the H → ττ channel in proton–proton collisions at √s=13 TeV with the ATLAS detector",
abstract = "A test of CP invariance in Higgs boson production via vector-boson fusion is performed in the H → ττ decay channel. This test uses the Optimal Observable method and is carried out using 36.1fb-1 of √s=13 TeV proton–proton collision data collected by the ATLAS experiment at the LHC. Contributions from CP-violating interactions between the Higgs boson and electroweak gauge bosons are described by an effective field theory, in which the parameter d˜  governs the strength of CP violation. No sign of CP violation is observed in the distributions of the Optimal Observable, and d˜  is constrained to the interval [−0.090, 0.035] at the 68% confidence level (CL), compared to an expected interval of d˜ ∈ [-0.035,0.033] based upon the Standard Model prediction. No constraints can be set d˜ on at 95% CL, while an expected 95% CL interval of d˜ ∈ [-0.21,0.15] for the Standard Model hypothesis was expected.",
author = "ATLAS Collaboration and A.E. Barton and I.A. Bertram and G. Borissov and E.V. Bouhova-Thacker and H. Fox and R.C.W. Henderson and R.W.L. Jones and V. Kartvelishvili and R.E. Long and P.A. Love and D. Muenstermann and A.J. Parker and M. Smizanska and A.S. Tee and J. Walder and A.M. Wharton and B.W. Whitmore and Izaac Sanderswood and Melissa Yexley",
year = "2020",
month = jun,
day = "10",
doi = "10.1016/j.physletb.2020.135426",
language = "English",
volume = "805",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
publisher = "Elsevier Science B.V.",

}

RIS

TY - JOUR

T1 - Test of CP invariance in vector-boson fusion production of the Higgs boson in the H → ττ channel in proton–proton collisions at √s=13 TeV with the ATLAS detector

AU - Collaboration, ATLAS

AU - Barton, A.E.

AU - Bertram, I.A.

AU - Borissov, G.

AU - Bouhova-Thacker, E.V.

AU - Fox, H.

AU - Henderson, R.C.W.

AU - Jones, R.W.L.

AU - Kartvelishvili, V.

AU - Long, R.E.

AU - Love, P.A.

AU - Muenstermann, D.

AU - Parker, A.J.

AU - Smizanska, M.

AU - Tee, A.S.

AU - Walder, J.

AU - Wharton, A.M.

AU - Whitmore, B.W.

AU - Sanderswood, Izaac

AU - Yexley, Melissa

PY - 2020/6/10

Y1 - 2020/6/10

N2 - A test of CP invariance in Higgs boson production via vector-boson fusion is performed in the H → ττ decay channel. This test uses the Optimal Observable method and is carried out using 36.1fb-1 of √s=13 TeV proton–proton collision data collected by the ATLAS experiment at the LHC. Contributions from CP-violating interactions between the Higgs boson and electroweak gauge bosons are described by an effective field theory, in which the parameter d˜  governs the strength of CP violation. No sign of CP violation is observed in the distributions of the Optimal Observable, and d˜  is constrained to the interval [−0.090, 0.035] at the 68% confidence level (CL), compared to an expected interval of d˜ ∈ [-0.035,0.033] based upon the Standard Model prediction. No constraints can be set d˜ on at 95% CL, while an expected 95% CL interval of d˜ ∈ [-0.21,0.15] for the Standard Model hypothesis was expected.

AB - A test of CP invariance in Higgs boson production via vector-boson fusion is performed in the H → ττ decay channel. This test uses the Optimal Observable method and is carried out using 36.1fb-1 of √s=13 TeV proton–proton collision data collected by the ATLAS experiment at the LHC. Contributions from CP-violating interactions between the Higgs boson and electroweak gauge bosons are described by an effective field theory, in which the parameter d˜  governs the strength of CP violation. No sign of CP violation is observed in the distributions of the Optimal Observable, and d˜  is constrained to the interval [−0.090, 0.035] at the 68% confidence level (CL), compared to an expected interval of d˜ ∈ [-0.035,0.033] based upon the Standard Model prediction. No constraints can be set d˜ on at 95% CL, while an expected 95% CL interval of d˜ ∈ [-0.21,0.15] for the Standard Model hypothesis was expected.

U2 - 10.1016/j.physletb.2020.135426

DO - 10.1016/j.physletb.2020.135426

M3 - Journal article

VL - 805

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

M1 - 135426

ER -