Journal article
Search for associated production of dark matter with a Higgs boson decaying to b b ¯ or γγ at √s=13 TeV
The journal of high energy physics, Vol.2017(10), 180
01/01/2017
DOI: 10.1007/JHEP10(2017)180
Abstract
A search for dark matter is performed looking for events with large missing transverse momentum and a Higgs boson decaying either to a pair of bottom quarks or to a pair of photons. The data from proton-proton collisions at a center-of-mass energy of 13 TeV, collected in 2015 with the CMS detector at the LHC, correspond to an integrated luminosity of 2.3 fb−1. Results are interpreted in the context of a Z′-two-Higgs-doublet model, where the gauge symmetry of the standard model is extended by a U(1)Z ′ group, with a new massive Z′ gauge boson, and the Higgs sector is extended with four additional Higgs bosons. In this model, a high-mass resonance Z′ decays into a pseudoscalar boson A and a light SM-like scalar Higgs boson, and the A decays to a pair of dark matter particles. No significant excesses are observed over the background prediction. Combining results from the two decay channels yields exclusion limits in the signal cross section in the mZ ′ - mA phase space. For example, the observed data exclude the Z′ mass range from 600 to 1860 GeV, for Z′ coupling strength gZ ′ = 0.8, the coupling of A with dark matter particles gχ = 1, the ratio of the vacuum expectation values tan β = 1, and mA = 300 GeV. The results of this analysis are valid for any dark matter particle mass below 100 GeV.
Details
- Title: Subtitle
- Search for associated production of dark matter with a Higgs boson decaying to b b ¯ or γγ at √s=13 TeV
- Creators
- A. M Sirunyan - Yerevan Physics InstituteHugues Brun - Université Libre de BruxellesBarbara Clerbaux - Université Libre de BruxellesGilles LentdeckerGiuseppe Fasanella - Université Libre de BruxellesLaurent Favart - Université Libre de BruxellesAnastasia Grebenyuk - Université Libre de BruxellesGeorgia Karapostoli - Université Libre de BruxellesThomas Lenzi - Université Libre de BruxellesAlexandre Leonard - Université Libre de BruxellesThierry Maerschalk - Université Libre de BruxellesAudrey Marinov - Université Libre de BruxellesLuca PernieAidan Sean Randle-CondeThomas ReisTomislav Seva - Université Libre de BruxellesCatherine Vander VeldePascal Vanlaer - Université Libre de BruxellesRyo Yonamine - Université Libre de BruxellesFlorian Zenoni - Université Libre de BruxellesFengwangdong Zhang - Université Libre de BruxellesWenxing Fang - Beihang UniversityHugo Delannoy - Université Libre de BruxellesCMS Collaboration
- Contributors
- Y Onel (Contributor) - University of Iowa, Physics and Astronomy
- Resource Type
- Journal article
- Publication Details
- The journal of high energy physics, Vol.2017(10), 180
- DOI
- 10.1007/JHEP10(2017)180
- ISSN
- 1126-6708
- eISSN
- 1029-8479
- Language
- English
- Date published
- 01/01/2017
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199934102771
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