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Search for di-muon decays of a low-mass Higgs boson in radiative decays of the Υ(1S)

J. P. Lees et al. (BABAR Collaboration)
Phys. Rev. D 87, 031102(R) – Published 15 February 2013; Erratum Phys. Rev. D 87, 059903 (2013)
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Abstract

We search for di-muon decays of a low-mass Higgs boson (A0) produced in radiative Υ(1S) decays. The Υ(1S) sample is selected by tagging the pion pair in the Υ(2S,3S)π+πΥ(1S) transitions, using a data sample of 92.8×106 Υ(2S) and 116.8×106 Υ(3S) events collected by the BABAR detector. We find no evidence for A0 production and set 90% confidence level upper limits on the product branching fraction B(Υ(1S)γA0)×B(A0μ+μ) in the range of (0.289.7)×106 for 0.212mA09.20GeV/c2. The results are combined with our previous measurements of Υ(2S,3S)γA0, A0μ+μ to set limits on the effective coupling of the b quark to the A0.

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  • Received 2 October 2012
  • Corrected 21 February 2013

DOI:https://doi.org/10.1103/PhysRevD.87.031102

© 2013 American Physical Society

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21 February 2013

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Vol. 87, Iss. 3 — 1 February 2013

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