Search for Dimuon Decays of a Light Scalar Boson in Radiative Transitions Υ→γA0
Name
Aubert-2009-Search for Dimuon De.pdf
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Checksum (MD5)
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Author(s)
Dujmic, Denis
Yamamoto, R. K.
Sciolla, Gabriella
Henderson, Shawn Wesley
Zhao, M.
Fisher, Peter H
Spitznagel, Michael A
Cowan, Ray F
Alternative Title
Search for Dimuon Decays of a Light Scalar Boson in Radiative Transitions Upsilon --> gamma A
Date Issued
August 2009
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
BABAR Collaboration et al. “Search for Dimuon Decays of a Light Scalar Boson in Radiative Transitions Upsilon --> gamma A.” Physical Review Letters 103.8 (2009): 081803. © 2009 The American Physical Society.
Version
Final published version
Abstract
We search for evidence of a light scalar boson in the radiative decays of the Υ(2S) and Υ(3S) resonances: Υ(2S,3S)→γA[superscript 0], A[superscript 0]→μ[superscript +]μ[superscript -]. Such a particle appears in extensions of the standard model, where a light CP-odd Higgs boson naturally couples strongly to b quarks. We find no evidence for such processes in the mass range 0.212≤m[subscript A [superscript 0]]≤9.3 GeV in the samples of 99×106 Υ(2S) and 122×106 Υ(3S) decays collected by the BABAR detector at the SLAC PEP-II B factory and set stringent upper limits on the effective coupling of the b quark to the A[superscript 0]. We also limit the dimuon branching fraction of the ηb meson: B(ηb→μ[superscript +]μ[superscript -])<0.9% at 90% confidence level.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
http://dx.doi.org/10.1103/PhysRevLett.103.081803
