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Title: | Search for a Low-Mass Higgs Boson in Υ(3S)→γA0, A0→τ+τ− at BABAR |
Author: | Garra Ticó, Jordi Graugés Pous, Eugeni BABAR Collaboration |
Keywords: | Física de partícules Experiments Particle physics Experiments |
Issue Date: | 30-Oct-2009 |
Publisher: | American Physical Society |
Abstract: | We search for a light Higgs boson A 0 in the radiative decay Υ ( 3 S ) → γ A 0 , A 0 → τ + τ − , τ + → e + ν e ¯ ν τ , or τ + → μ + ν μ ¯ ν τ . The data sample contains 122 × 10 6 Υ ( 3 S ) 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 < m τ + τ − < 10.10 GeV / c 2 . 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 ( 3 S ) → γ A 0 ) × B ( A 0 → τ + τ − ) > ( 1.5 - 16 ) × 10 − 5 across the m τ + τ − range. We also set a 90% C.L. upper limit on the τ + τ − decay of the η b at B ( η b → τ + τ − ) < 8 % . |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.103.181801 |
It is part of: | Physical Review Letters, 2009, vol. 103, num. 18, p. 181801 |
URI: | http://hdl.handle.net/2445/138271 |
Related resource: | https://doi.org/10.1103/PhysRevLett.103.181801 |
ISSN: | 0031-9007 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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