Search for a Low-Mass Higgs Boson in Υ(3S)→γA0, A0→τ+τ- at BABAR

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Aubert, B. et al. (2009) Search for a Low-Mass Higgs Boson in Υ(3S)→γA0, A0→τ+τ- at BABAR. Physical Review Letters, 103 (18). p. 181801. ISSN 0031-9007

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Official URL: http://dx.doi.org/10.1103/PhysRevLett.103.181801

DOI: 10.1103/PhysRevLett.103.181801

Abstract

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%.

Item Type:	Article
Subjects:	Q Science > QC Physics
Schools:	School of Applied Sciences
Related URLs:	Author
Depositing User:	Sharon Beastall
Date Deposited:	05 Jan 2012 10:42
Last Modified:	05 Jan 2012 10:42
URI:	http://eprints.hud.ac.uk/id/eprint/12345

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