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Search for dimuon decays of a light scalar boson in radiative transitions upsilon ->gamma A(0)
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BaBar Collaboration (Including:
). (2009) Search for dimuon decays of a light scalar boson in radiative transitions upsilon ->gamma A(0). Physical Review Letters, Vol.103 (No.8). article no. 081803 . doi:10.1103/PhysRevLett.103.081803Research output not available from this repository.
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Official URL: http://dx.doi.org/10.1103/PhysRevLett.103.081803
Abstract
We search for evidence of a light scalar boson in the radiative decays of the Upsilon(2S) and Upsilon(3S) resonances: Upsilon(2S,3S)->gamma A(0), A(0)->mu(+)mu(-). 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 < m(A)(0)< 9.3 GeV in the samples of 99x10(6) Upsilon(2S) and 122x10(6) Upsilon(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 A(0). We also limit the dimuon branching fraction of the eta(b) meson: B(eta(b)->mu(+)mu(-))< 0.9% at 90% confidence level.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
| Journal or Publication Title: | Physical Review Letters | ||||
| Publisher: | American Physical Society | ||||
| ISSN: | 0031-9007 | ||||
| Official Date: | 21 August 2009 | ||||
| Dates: |
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| Volume: | Vol.103 | ||||
| Number: | No.8 | ||||
| Number of Pages: | 7 | ||||
| Page Range: | article no. 081803 | ||||
| DOI: | 10.1103/PhysRevLett.103.081803 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Funder: | DOE and NSF (USA), NSERC (Canada), CEA and CNRS-IN2P3 (France), BMBF and DFG (Germany), INFN (Italy), FOM (The Netherlands), NFR (Norway), MES (Russia), MEC (Spain), STFC (United Kingdom), Marie Curie EIF (European Union), A.P. Sloan Foundation |
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