Search for invisible decays of Higgs bosons in the vector boson fusion and associated ZH production modes

S. Chatrchyan; V. Khachatryan; A. M. Sirunyan; Sara Alderweireldt; Monika Bansal; Sunil Bansal; Tom Cornelis; Eddi Wolf; Xavier Janssen; Albert Knutsson; Sten Luyckx; Benoit Roland; Romain Rougny; Hans Haevermaet; Pierre Mechelen; Nick Remortel; Alex Spilbeeck; Yasar Onel; CMS Collaboration

doi:10.1140/EPJC/S10052-014-2980-6

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Search for invisible decays of Higgs bosons in the vector boson fusion and associated ZH production modes

Journal article

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Search for invisible decays of Higgs bosons in the vector boson fusion and associated ZH production modes

S. Chatrchyan, V. Khachatryan, A. M. Sirunyan, Sara Alderweireldt, Monika Bansal, Sunil Bansal, Tom Cornelis, Eddi Wolf, Xavier Janssen, Albert Knutsson, …

European physical journal : C : particles and fields, Vol.74(8), 2980

01/01/2014

DOI: 10.1140/EPJC/S10052-014-2980-6

PMCID: PMC4370888

PMID: 25814906

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Abstract

A search for invisible decays of Higgs bosons is performed using the vector boson fusion and associated ZH production modes. In the ZH mode, the Z boson is required to decay to a pair of charged leptons or a bb quark pair. The searches use the 8┬á TeV pp collision dataset collected by the CMS detector at the LHC, corresponding to an integrated luminosity of up to 19.7┬á fb-1. Certain channels include data from 7┬á TeV collisions corresponding to an integrated luminosity of 4.9┬á fb-1. The searches are sensitive to non-standard-model invisible decays of the recently observed Higgs boson, as well as additional Higgs bosons with similar production modes and large invisible branching fractions. In all channels, the observed data are consistent with the expected standard model backgrounds. Limits are set on the production cross section times invisible branching fraction, as a function of the Higgs boson mass, for the vector boson fusion and ZH production modes. By combining all channels, and assuming standard model Higgs boson cross sections and acceptances, the observed (expected) upper limit on the invisible branching fraction at mH = 125 ┬á GeV is found to be 0.58┬á(0.44) at 95┬á% confidence level. We interpret this limit in terms of a Higgs-portal model of dark matter interactions.

High Energy Physics

Physics

Experiment

Lattice

Nuclear Experiment

Nuclear Theory

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Details

Title: Subtitle: Search for invisible decays of Higgs bosons in the vector boson fusion and associated ZH production modes
Creators: S. Chatrchyan
V. Khachatryan
A. M. Sirunyan
Sara Alderweireldt
Monika Bansal
Sunil Bansal
Tom Cornelis
Eddi Wolf
Xavier Janssen
Albert Knutsson
Sten Luyckx
Benoit Roland
Romain Rougny
Hans Haevermaet
Pierre Mechelen
Nick Remortel
Alex Spilbeeck
Yasar Onel - Physics and Astronomy
CMS Collaboration
Resource Type: Journal article
Publication Details: European physical journal : C : particles and fields, Vol.74(8), 2980
DOI: 10.1140/EPJC/S10052-014-2980-6
PMID: 25814906
PMCID: PMC4370888
NLM abbreviation: Eur Phys J C Part Fields
ISSN: 1434-6044
Language: English
Date published: 01/01/2014
Academic Unit: Physics and Astronomy
Record Identifier: 9984428811302771

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