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Abstract
A search is presented for pairs of light pseudoscalar bosons, in the mass range from 4 to 15 GeV,
produced from decays of the 125 GeV Higgs boson. The decay modes considered are final states that arise
when one of the pseudoscalars decays to a pair of tau leptons, and the other one either into a pair of tau
leptons or muons. The search is based on proton-proton collisions collected by the CMS experiment in
2016 at a center-of-mass energy of 13 TeV that correspond to an integrated luminosity of 35.9 fb−1. The
2μ2τ and 4τ channels are used in combination to constrain the product of the Higgs boson production
cross section and the branching fraction into 4τ final state, σB, exploiting the linear dependence of
the fermionic coupling strength of pseudoscalar bosons on the fermion mass. No significant excess is
observed beyond the expectation from the standard model. The observed and expected upper limits at
95% confidence level on σB, relative to the standard model Higgs boson production cross section, are
set respectively between 0.022 and 0.23 and between 0.027 and 0.19 in the mass range probed by the
analysis.
produced from decays of the 125 GeV Higgs boson. The decay modes considered are final states that arise
when one of the pseudoscalars decays to a pair of tau leptons, and the other one either into a pair of tau
leptons or muons. The search is based on proton-proton collisions collected by the CMS experiment in
2016 at a center-of-mass energy of 13 TeV that correspond to an integrated luminosity of 35.9 fb−1. The
2μ2τ and 4τ channels are used in combination to constrain the product of the Higgs boson production
cross section and the branching fraction into 4τ final state, σB, exploiting the linear dependence of
the fermionic coupling strength of pseudoscalar bosons on the fermion mass. No significant excess is
observed beyond the expectation from the standard model. The observed and expected upper limits at
95% confidence level on σB, relative to the standard model Higgs boson production cross section, are
set respectively between 0.022 and 0.23 and between 0.027 and 0.19 in the mass range probed by the
analysis.
Datum van beschikbaarheid | 28 aug 2019 |
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Uitgever | HEPData |
Format
- Format
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iBOF/23/074: Ontsluiten van de charm-Higgs koppeling bij de LHC
D'Hondt, J., Lowette, S., Van Mechelen, P. & Dobur, D.
1/01/23 → 31/12/26
Project: Fundamenteel
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Onderzoekersoutput
- 1 Article
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Search for light pseudoscalar boson pairs produced from decays of the 125 GeV Higgs boson in final states with two muons and two nearby tracks in pp collisions at root s d=13TeV
Collaboration, CMS., Blekman, F., D'Hondt, J., De Clercq, J., Deroover, K., Flouris, G., Lontkovskyi, D., Lowette, S., Marchesini, I., Moortgat, S., Python, Q., Skovpen, K., Tavernier, S., Van Doninck, W., Van Mulders, P., Moreels, L., Van Parijs, I. M. & Burns, D., 10 jan 2020, In: Phys. Lett. B. 800, 27 blz., 135087.Onderzoeksoutput: Article › peer review
Open Access42 Citaten (Scopus)