Observation of WW$\gamma$ production and search for H$\gamma$ production in proton-proton collisions at $\sqrt{s}$ = 13 TeV - INSPIRE

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Observation of WW $\gamma$ production and search for H $\gamma$ production in proton-proton collisions at $\sqrt{s}$ = 13 TeV

CMS

Collaboration

Oct 8, 2023

20 pages

Published in:

Phys.Rev.Lett. 132 (2024) 12, 121901

Published: Mar 19, 2024

e-Print:

2310.05164 [hep-ex]

DOI:

10.1103/PhysRevLett.132.121901 (publication)

Report number:

CMS-SMP-22-006,
CERN-EP-2023-203

Experiments:

CERN-LHC-CMS

View in:

reference search18 citations

Citations per year

Abstract: (arXiv)

The observation of WW

\gamma

production in proton-proton collisions at a center-of-mass energy of 13 TeV with an integrated luminosity of 138 fb

^{-1}

is presented. The observed (expected) significance is 5.6 (5.1) standard deviations. Events are selected by requiring exactly two leptons (one electron and one muon) of opposite charge, moderate missing transverse momentum, and a photon. The measured fiducial cross section for WW

\gamma

is 5.9

\pm

0.8 (stat)

\pm

0.8 (syst)

\pm

0.7 (modeling) fb, in agreement with the next-to-leading order quantum chromodynamics prediction. The analysis is extended with a search for the associated production of the Higgs boson and a photon, which is generated by a coupling of the Higgs boson to light quarks. The result is used to constrain the Higgs boson couplings to light quarks.

Note:

Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/SMP-22-006 (CMS Public Pages)

p p: scattering
p p: colliding beams
W: pair production
W: leptonic decay
Higgs particle: coupling
coupling: Yukawa
higher-order: 1
Higgs particle: associated production
Higgs particle: decay modes
transverse momentum: missing-energy

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