Search for a Light CP -odd Higgs Boson in Radiative Decays of J/ψ

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Search for a Light CP -odd Higgs Boson in Radiative Decays of J/ψ

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Title: Search for a Light CP -odd Higgs Boson in Radiative Decays of J/ψ
Author(s):
Ablikim, M.;
Achasov, M. N.;
Ai, X. C.;
Albayrak, O.;
Albrecht, M.;
Ambrose, D. J.;
Amoroso, A.;
Lou, Xinchou (UT Dallas);
BESIII Collaboration
Item Type: article
Keywords: Show Keywords
Abstract: We search for a light Higgs boson A⁰ in the fully reconstructed decay chain of J/ψ → γA⁰, A⁰ → μ⁺μ⁻ using (225.0 ± 2.8) ×106 J/ψ events collected by the BESIII experiment. The A⁰ is a hypothetical CP-odd light Higgs boson predicted by many extensions of the Standard Model including two spin-0 doublets plus an extra singlet. We find no evidence for A⁰ production and set 90% confidence-level upper limits on the product branching fraction ℬ(J/ψ → γA⁰) × ℬ(A⁰ → μ⁺μ⁻) in the range of (2.8-495.3) ×10⁻⁸ for 0.212 ≤ mA⁰ ≤ 3.0 GeV/c². The new limits are five times below our previous results, and the nature of the A⁰ is constrained to be mostly singlet.
Publisher: American Physical Society
ISSN: 1550-7998
Persistent Link: http://dx.doi.org/10.1103/PhysRevD.93.052005
http://hdl.handle.net/10735.1/5600
Bibliographic Citation: Ablikim, M., M. N. Achasov, X. C. Ai, O. Albayrak, et al. 2016. "Search for a light CP -odd Higgs boson in radiative decays of J /ψ." Physical Review D - Particles, Fields, Gravitation and Cosmology 93(5), doi:10.1103/PhysRevD.93.052005
Terms of Use: ©2016 American Physical Society. All rights reserved.

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