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Search for associated production of dark matter with a Higgs boson decaying to bb¯ or γγ at √s=13 TeV

Show simple item record CMS Collaboration en_US Sirunyan, A. M. en_US CHAUHAN, S. en_US DUBE, SOURABH en_US HEGDE, V. en_US KAPOOR, A. en_US KOTHEKAR, K. en_US PANDEY, S. en_US RANE, A. en_US SHARMA, SEEMA et al. en_US 2019-07-01T05:41:18Z 2019-07-01T05:41:18Z 2017-10 en_US
dc.identifier.citation Journal of High Energy Physics, 2017, 180. en_US
dc.identifier.issn 1126-6708 en_US
dc.identifier.issn 1029-8479 en_US
dc.identifier.uri en_US
dc.description.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 m Z ′ - m A phase space. For example, the observed data exclude the Z′ mass range from 600 to 1860 GeV, for Z′ coupling strength g Z ′ = 0.8, the coupling of A with dark matter particles g χ = 1, the ratio of the vacuum expectation values tan β = 1, and m A = 300 GeV. The results of this analysis are valid for any dark matter particle mass below 100 GeV. en_US
dc.language.iso en en_US
dc.publisher Springer Nature en_US
dc.subject Dark matter en_US
dc.subject Hadron-Hadron scattering (experiments) en_US
dc.subject Higgs physics Beyond en_US
dc.subject Standard Model en_US
dc.subject Supersymmetry en_US
dc.subject 2017 en_US
dc.title Search for associated production of dark matter with a Higgs boson decaying to bb¯ or γγ at √s=13 TeV en_US
dc.type Article en_US
dc.contributor.department Dept. of Physics en_US
dc.identifier.sourcetitle Journal of High Energy Physics en_US
dc.publication.originofpublisher Foreign en_US

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