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Combined search for anomalous pseudoscalar HVV couplings in VH(H $to b bar b$) production and H $ VV decay

Combined search for anomalous pseudoscalar HVV couplings in VH(H $to b bar b$) production and H $ VV decay
Combined search for anomalous pseudoscalar HVV couplings in VH(H $to b bar b$) production and H $ VV decay
A search for anomalous pseudoscalar couplings of the Higgs boson H to electroweak vector bosons V (=W=W or Z) in a sample of proton–proton collision events corresponding to an integrated luminosity of 18.9 fb−1 at a center-of-mass energy of 8 TeV is presented. Events consistent with the topology of associated VHVH production, where the Higgs boson decays to a pair of bottom quarks and the vector boson decays leptonically, are analyzed. The consistency of data with a potential pseudoscalar contribution to the HVVHVV interaction, expressed by the effective pseudoscalar cross section fractions fa3fa3, is assessed by means of profile likelihood scans. Results are given for the VHVH channels alone and for a combined analysis of the VHVH and previously published H→VVH→VV channels. Under certain assumptions, View the MathML sourcefa3ZZ>0.0034 is excluded at 95% confidence level in the combination. Scenarios in which these assumptions are relaxed are also considered.
0370-2693
672-696
Khachatryan, Vardan
375bcfe5-df1a-41ad-9a90-553e557ef6d6
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3
The CMS Collaboration
Khachatryan, Vardan
375bcfe5-df1a-41ad-9a90-553e557ef6d6
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3

The CMS Collaboration (2016) Combined search for anomalous pseudoscalar HVV couplings in VH(H $to b bar b$) production and H $ VV decay. Physics Letters B, B759, 672-696. (doi:10.1016/j.physletb.2016.06.004).

Record type: Article

Abstract

A search for anomalous pseudoscalar couplings of the Higgs boson H to electroweak vector bosons V (=W=W or Z) in a sample of proton–proton collision events corresponding to an integrated luminosity of 18.9 fb−1 at a center-of-mass energy of 8 TeV is presented. Events consistent with the topology of associated VHVH production, where the Higgs boson decays to a pair of bottom quarks and the vector boson decays leptonically, are analyzed. The consistency of data with a potential pseudoscalar contribution to the HVVHVV interaction, expressed by the effective pseudoscalar cross section fractions fa3fa3, is assessed by means of profile likelihood scans. Results are given for the VHVH channels alone and for a combined analysis of the VHVH and previously published H→VVH→VV channels. Under certain assumptions, View the MathML sourcefa3ZZ>0.0034 is excluded at 95% confidence level in the combination. Scenarios in which these assumptions are relaxed are also considered.

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Accepted/In Press date: 2 June 2016
e-pub ahead of print date: 7 June 2016
Organisations: Physics & Astronomy

Identifiers

Local EPrints ID: 408264
URI: http://eprints.soton.ac.uk/id/eprint/408264
ISSN: 0370-2693
PURE UUID: 46b6cd43-8c25-43b8-abed-60a56dfd7bcb
ORCID for Alexander Belyaev: ORCID iD orcid.org/0000-0002-1733-4408

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Date deposited: 18 May 2017 04:02
Last modified: 22 Nov 2021 02:55

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Contributors

Author: Vardan Khachatryan
Corporate Author: The CMS Collaboration

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