Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/7749
Title: Search for an exotic decay of the Higgs boson to a pair of light pseudoscalars in the final state with two bquarks and twobquarks and two ? leptons in proton–proton collisions at ?s=13 TeV
Authors: CMS Collaboration
Karapınar, Güler
Keywords: Higgs boson
Exotic decays
NMSSM
High energy physics
Issue Date: Oct-2018
Publisher: Elsevier Ltd.
Source: Sirunyan, A.M., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., Brandstetter, J. ...CMS Collaboration (2018). Search for an exotic decay of the Higgs boson to a pair of light pseudoscalars in the final state with two bquarks and two τ leptons in proton–proton collisions at √s=13 TeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 785, 462-488. doi:10.1016/j.physletb.2018.08.057
Abstract: A 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.
URI: https://doi.org/10.1016/j.physletb.2018.08.057
https://hdl.handle.net/11147/7749
ISSN: 0370-2693
0370-2693
Appears in Collections:Mathematics / Matematik
Rectorate / Rektörlük
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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