Combination of searches for invisible Higgs boson decays with the ATLAS experiment - INSPIRE

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Combination of searches for invisible Higgs boson decays with the ATLAS experiment

ATLAS

Collaboration

Apr 10, 2019

28 pages

Published in:

Phys.Rev.Lett. 122 (2019) 23, 231801

Published: Jun 13, 2019

e-Print:

1904.05105 [hep-ex]

DOI:

10.1103/PhysRevLett.122.231801

PDG: Dark Matter Particle (

{{\mathit X}^{0}}

) Production in Hadron Collisions

Report number:

CERN-EP-2019-046

Experiments:

CERN-LHC-ATLAS

View in:

reference search204 citations

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Abstract: (APS)

Dark matter particles, if sufficiently light, may be produced in decays of the Higgs boson. This Letter presents a statistical combination of searches for H→invisible decays where H is produced according to the standard model via vector boson fusion, Z(ℓℓ)H, and W/Z(had)H, all performed with the ATLAS detector using 36.1 fb-1 of pp collisions at a center-of-mass energy of s=13 TeV at the LHC. In combination with the results at s=7 and 8 TeV, an exclusion limit on the H→invisible branching ratio of 0.26(0.17-0.05+0.07) at 95% confidence level is observed (expected).

Note:

28 pages in total, author list starting in page 12, 3 figures, 1 table, published in Phys. Rev. Lett. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2018-54/ •
Submitted to Phys.Rev.Lett.

Elementary Particles and Fields
p p: colliding beams
Higgs particle: hadroproduction
Higgs particle: invisible decay
vector boson: fusion
vector boson: associated production
W: hadronic decay
Z0: leptonic decay
Z0: hadronic decay
p p: scattering

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