Study of WH production through vector boson scattering and extraction of the relative sign of the W and Z couplings to the Higgs boson in proton-proton collisions at <math altimg="si1.svg"><msqrt><mrow><mi>s</mi></mrow></msqrt><mo linebreak="goodbreak" linebreakstyle="after">=</mo><mn>13</mn><mspace width="0.2em"/><mtext>TeV</mtext></math>

Hayrapetyan, Aram; Tumasyan, Armen; Adam, Wolfgang; Andrejkovic, Janik Walter; Bergauer, Thomas; Chatterjee, Suman; Damanakis, Konstantinos; Dragicevic, Marko; Hussain, Priya Sajid; Jeitler, Manfred

doi:10.1016/j.physletb.2024.139202

Study of WH production through vector boson scattering and extraction of the relative sign of the W and Z couplings to the Higgs boson in proton-proton collisions at $\sqrt{s} = 13 TeV$

CMS

Collaboration

May 26, 2024

24 pages

Published in:

Phys.Lett.B 860 (2025) 139202

Published: Dec 18, 2024

e-Print:

2405.16566 [hep-ex]

DOI:

10.1016/j.physletb.2024.139202 (publication)

Report number:

CMS-HIG-23-007,
CERN-EP-2024-123

Experiments:

CERN-LHC-CMS

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Abstract: (Elsevier B.V.)

A search for the production of a W boson and a Higgs boson through vector boson scattering (VBS) is presented, using CMS data from proton-proton collisions at

\sqrt{s} = 13 TeV

collected from 2016 to 2018. The integrated luminosity of the data sample is 138

{fb}^{- 1}

. Selected events must be consistent with the presence of two jets originating from VBS, the leptonic decay of the W boson to an electron or muon, possibly also through an intermediate τ lepton, and a Higgs boson decaying into a pair of b quarks, reconstructed as either a single merged jet or two resolved jets. A measurement of the process as predicted by the standard model (SM) is performed alongside a study of beyond-the-SM (BSM) scenarios. The SM analysis sets an observed (expected) 95% confidence level upper limit of 14.3 (9.9) on the ratio of the measured VBS WH cross section to that expected by the SM. The BSM analysis, conducted within the so-called κ framework, excludes all scenarios with

λ_{W Z} < 0

that are consistent with current measurements, where

λ_{W Z} = κ_{W} / κ_{Z}

and

κ_{W}

and

κ_{Z}

are the

H W W

and

H Z Z

coupling modifiers, respectively. The significance of the exclusion is beyond 5 standard deviations, and it is consistent with the SM expectation of

λ_{W Z} = 1

.

Note:

All the figures and tables, including additional supplementary figures, can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/HIG-23-007 (CMS Public Pages)

CMS
Higgs
Vector boson scattering
p p: colliding beams
vector boson: scattering
p p: scattering
W: leptonic decay
W: associated production
Higgs particle: associated production
vector boson: associated production

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