A search is presented for the decay Υ(1S)→γA0, A0→ccbar, 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→ccbar 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→ccbar) range from 7.4×10-5 to 2.4×10-3 for A0 masses from 4.00 to 8.95GeV/c2 and 9.10 to 9.25GeV/c2, where the region between 8.95 and 9.10GeV/c2 is excluded because of background from Υ(2S)→γ χbJ(1P), χbJ(1P)→γ Υ(1S) decays.
Search for a light Higgs resonance in radiative decays of the Υ(1S) with a charm tag
Pilloni A.;
2015-01-01
Abstract
A search is presented for the decay Υ(1S)→γA0, A0→ccbar, 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→ccbar 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→ccbar) range from 7.4×10-5 to 2.4×10-3 for A0 masses from 4.00 to 8.95GeV/c2 and 9.10 to 9.25GeV/c2, where the region between 8.95 and 9.10GeV/c2 is excluded because of background from Υ(2S)→γ χbJ(1P), χbJ(1P)→γ Υ(1S) decays.Pubblicazioni consigliate
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