Aubert, B. et al. (2009) Search for Dimuon Decays of a Light Scalar Boson in Radiative Transitions Υ→γA0. Physical Review Letters, 103 (8). 081803. ISSN 0031-9007
Metadata only available from this repository.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)→γA0, A0→μ+μ-. 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≤mA0≤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 A0. We also limit the dimuon branching fraction of the ηb meson: B(ηb→μ+μ-)<0.9% at 90% confidence level.
Item Type: | Article |
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Subjects: | Q Science > QC Physics |
Schools: | School of Applied Sciences |
Related URLs: | |
Depositing User: | Sharon Beastall |
Date Deposited: | 04 Jan 2012 11:37 |
Last Modified: | 28 Aug 2021 11:13 |
URI: | http://eprints.hud.ac.uk/id/eprint/12310 |
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