Search for a light Higgs resonance in radiative decays of the Y(1S) with a charm tag

Journal Article · Fri Apr 10 00:00:00 EDT 2015 · Physical Review. D, Particles, Fields, Gravitation and Cosmology

DOI:https://doi.org/10.1103/PhysRevD.91.071102· OSTI ID:1171990

Lees, J. P. ^[1]

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1. Univ. de Savoie, Annecy-Le-Vieux (France). et al.

In this study, a search is presented for the decay Υ(1S)→γA⁰, A⁰ → cc¯, where A⁰ is a candidate for the CP-odd Higgs boson of the next-to-minimal supersymmetric standard model. The search is based on data collected with the BABAR detector at the Υ(2S) resonance. A sample of Υ(1S) mesons is selected via the decay Υ(2S) → π⁺π^– Υ(1S). The A⁰ → cc¯ decay is identified through the reconstruction of hadronic D⁰, D⁺, and D*(2010)⁺ meson decays. No significant signal is observed. The measured 90% confidence-level upper limits on the product branching fraction B(Υ(1S) → γA⁰)×B(A⁰ → cc¯) range from 7.4×10^–5 to 2.4×10^–3 for A⁰ masses from 4.00 to 8.95 GeV/c² and 9.10 to 9.25 GeV/c², where the region between 8.95 and 9.10 GeV/c2 is excluded because of background from Υ(2S) → γχ_bJ(1P), χ_bJ(1P) → γΥ(1S) decays.

• Research Organization: SLAC National Accelerator Lab., Menlo Park, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 1171990
• Report Number(s): SLAC-PUB-16230; arXiv:1502.06019
• Journal Information: Physical Review. D, Particles, Fields, Gravitation and Cosmology, Vol. 91, Issue 7; ISSN 1550-7998
• Publisher: American Physical Society (APS)
• Country of Publication: United States
• Language: English

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