Search for a Low-Mass Higgs Boson in Upsilon (3S)--> gamma A0, A0--> tau + tau - at BABAR
Author(s)
Zhao, M.; Yamamoto, R. K.; Sciolla, Gabriella; Henderson, Shawn Wesley; Dujmic, Denis; Spitznagel, Michael A; Cowan, Ray F; Fisher, Peter H; ... Show more Show less
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Alternative title
Search for a Low-Mass Higgs Boson in Υ(3S)→γA0, A0→τ+τ- at BABAR
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We search for a light Higgs boson A0 in the radiative decay Υ(3S)→γA0, A0-->τ+τ-, τ+→e+νeν̅ τ, or τ+-->μ+νμν̅ τ. The data sample contains 122×106 Υ(3S) events recorded with the BABAR detector. We find no evidence for a narrow structure in the studied τ+τ- invariant mass region of 4.03<mτ+τ-<10.10 GeV/c2. We exclude at the 90% confidence level (C.L.) a low-mass Higgs boson decaying to τ+τ- with a product branching fraction B(Υ(3S)-->γA0)×B(A0-->τ+τ-)>(1.5–16)×10-5 across the mτ+τ- range. We also set a 90% C.L. upper limit on the τ+τ- decay of the ηb at B(ηb-->τ+τ-)<8%.
Date issued
2009-10Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
Physical Review Letters
Publisher
American Physical Society
Citation
The BABAR Collaboration et al. “Search for a Low-Mass Higgs Boson in Upsilon (3S)--> gamma A, A--> tau + tau - at BABAR.” Physical Review Letters 103.18 (2009): 181801. © 2009 American Physical Society.
Version: Final published version
ISSN
0031-9007