Search:
Computing and Library Services - delivering an inspiring information environment

Search for Dimuon Decays of a Light Scalar Boson in Radiative Transitions Υ→γA0

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
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: 04 Jan 2012 11:37
URI: http://eprints.hud.ac.uk/id/eprint/12310

Item control for Repository Staff only:

View Item

University of Huddersfield, Queensgate, Huddersfield, HD1 3DH Copyright and Disclaimer All rights reserved ©