We search for a light Higgs boson A0 in the radiative decay Υ(3S)→γA0, A0→τ+τ-, τ+→e+νeν̄ τ, or τ+→μ+νμν̄τ. 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-<10.10GeV/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%. © 2009 The American Physical Society.

Aubert, B., Karyotakis, Y., Lees, J., Poireau, V., Prencipe, E., Prudent, X., et al. (2009). Search for a Low-Mass higgs boson in Υ(3S)→γA0, A0→τ+τ- at BABAR. PHYSICAL REVIEW LETTERS, 103(18), 1-7 [10.1103/PhysRevLett.103.181801].

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

PATRIGNANI, CLAUDIA;
2009

Abstract

We search for a light Higgs boson A0 in the radiative decay Υ(3S)→γA0, A0→τ+τ-, τ+→e+νeν̄ τ, or τ+→μ+νμν̄τ. 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(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%. © 2009 The American Physical Society.
2009
Aubert, B., Karyotakis, Y., Lees, J., Poireau, V., Prencipe, E., Prudent, X., et al. (2009). Search for a Low-Mass higgs boson in Υ(3S)→γA0, A0→τ+τ- at BABAR. PHYSICAL REVIEW LETTERS, 103(18), 1-7 [10.1103/PhysRevLett.103.181801].
Aubert, B; Karyotakis, Y.; Lees, J.P.; Poireau, V.; Prencipe, E.; Prudent, X.; Tisserand, V.; Tico, J. Garra; Grauges, E.; Martinelli, M.; Palano, A.;...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/547956
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