Search for an exotic decay of the Higgs boson to a pair of light pseudoscalars in the final state with two b quarks and two τ leptons in proton–proton collisions at s=13TeV

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dc.citation.firstpage462
dc.citation.journalTitlePhysics Letters B
dc.citation.lastpage488
dc.citation.volumeNumber785
dc.contributor.authorCMS Collaboration
dc.date.accessioned2018-12-03T17:11:55Z
dc.date.available2018-12-03T17:11:55Z
dc.date.issued2018
dc.description.abstractA search for an exotic decay of the Higgs boson to a pair of light pseudoscalar bosons is performed for the first time in the final state with two b quarks and two τ leptons. The search is motivated in the context of models of physics beyond the standard model (SM), such as two Higgs doublet models extended with a complex scalar singlet (2HDM + S), which include the next-to-minimal supersymmetric SM (NMSSM). The results are based on a data set of proton–proton collisions corresponding to an integrated luminosity of 35.9fb−1, accumulated by the CMS experiment at the LHC in 2016 at a center-of-mass energy of 13TeV. Masses of the pseudoscalar boson between 15 and 60GeV are probed, and no excess of events above the SM expectation is observed. Upper limits between 3 and 12% are set on the branching fraction B(h→aa→2τ2b) assuming the SM production of the Higgs boson. Upper limits are also set on the branching fraction of the Higgs boson to two light pseudoscalar bosons in different 2HDM + S scenarios. Assuming the SM production cross section for the Higgs boson, the upper limit on this quantity is as low as 20% for a mass of the pseudoscalar of 40GeV in the NMSSM.
dc.identifier.citationCMS Collaboration. "Search for an exotic decay of the Higgs boson to a pair of light pseudoscalars in the final state with two b quarks and two τ leptons in proton–proton collisions at s=13TeV." <i>Physics Letters B,</i> 785, (2018) Elsevier: 462-488. https://doi.org/10.1016/j.physletb.2018.08.057.
dc.identifier.doihttps://doi.org/10.1016/j.physletb.2018.08.057
dc.identifier.urihttps://hdl.handle.net/1911/103516
dc.language.isoeng
dc.publisherElsevier
dc.rightsThis is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subject.keywordCMS
dc.subject.keywordPhysics
dc.subject.keywordHiggs boson
dc.subject.keywordExotic decays
dc.subject.keywordNMSSM
dc.subject.keyword2HDM + S
dc.titleSearch for an exotic decay of the Higgs boson to a pair of light pseudoscalars in the final state with two b quarks and two τ leptons in proton–proton collisions at s=13TeV
dc.typeJournal article
dc.type.dcmiText
dc.type.publicationpublisher version
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