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dc.contributor.authorThe CMS collaboration
dc.contributor.authorSirunyan, A. M.
dc.contributor.authorTumasyan, A. R.
dc.contributor.authorBaarmand, Marc M.
dc.contributor.authorBhopatkar, Vallary
dc.contributor.authorColafranceschi, Stefano
dc.contributor.authorHohlmann, Marcus
dc.contributor.authorNoonan, Daniel
dc.contributor.authorRoy, Tuhin S.
dc.contributor.authorYumiceva, F.
dc.date.accessioned2018-04-11T18:45:50Z
dc.date.available2018-04-11T18:45:50Z
dc.date.issued2017-10-01
dc.identifier.citationThe CMS collaboration, Sirunyan, A. M., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T., . . . Woods, N. (2017). Search for associated production of dark matter with a higgs boson decaying to b b ¯ or γγ at √s=13 TeV. Journal of High Energy Physics, 2017(10)10.1007/JHEP10(2017)180en_US
dc.identifier.urihttp://hdl.handle.net/11141/2389
dc.descriptionBeyond Standard Model, Dark matter, Hadron-Hadron scattering (experiments), Higgs physics, Supersymmetry, dark matter, bosonen_US
dc.description.abstractA 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.en_US
dc.language.isoen_USen_US
dc.rights© 2017 the authorsen_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.titleSearch for associated production of dark matter with a Higgs boson decaying to b b ¯ or γγ at √s=13 TeVen_US
dc.typeArticleen_US
dc.identifier.doi10.1007/JHEP10(2017)180


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