Phys. Rev. Lett. 103, 111802 (2009) [4 pages]Bottomonium Spectroscopy with Mixing of ηb States and a Light CP-Odd Higgs BosonReceived 2 July 2009; published 11 September 2009 The mass of the ηb(1S), measured recently by the BABAR Collaboration, is significantly lower than expected from QCD predictions for the Υ(1S)-ηb(1S) hyperfine splitting. We suggest that the observed ηb(1S) mass is shifted downwards due to a mixing with a CP-odd Higgs boson A with a mass mA in the range 9.4–10.5 GeV compatible with LEP, CLEO, and BABAR constraints. We determine the resulting predictions for the spectrum of the ηb(nS)-A system and the branching ratios into τ+τ- as functions of mA. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.103.111802
DOI:
10.1103/PhysRevLett.103.111802
PACS:
12.60.Fr, 12.60.Jv, 13.20.Gd
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