Journal article
Evidence for the eta(b)(1S) Meson in Radiative Y(2S) Decay
- Abstract:
-
We have performed a search for the ηb(1S) meson in the radiative decay of the Υ(2S) resonance using a sample of 91.6×106 Υ(2S) events recorded with the BABAR detector at the PEP-II B factory at the SLAC National Accelerator Laboratory. We observe a peak in the photon energy spectrum at Eγ=609.3-4.5+4.6(stat)±1.9(syst)MeV, corresponding to an ηb(1S) mass of 9394.2-4.9+4.8(stat)±2.0(syst)MeV/c2. The branching fraction for the decay Υ(2S)→γηb(1S) is determined to be [3.9±1.1(stat)-0.9+1.1(syst)]...
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- Publication status:
- Published
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- Publisher copy:
- 10.1103/PhysRevLett.103.161801
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Authors
Bibliographic Details
- Journal:
- Physical Review Letters
- Volume:
- 103
- Issue:
- 16
- Publication date:
- 2009-10-16
- DOI:
- EISSN:
-
1079-7114
- ISSN:
-
0031-9007
- Source identifiers:
-
211362
Item Description
- Pubs id:
-
pubs:211362
- UUID:
-
uuid:b30d811e-eacd-4975-8f78-372b4506f822
- Local pid:
- pubs:211362
- Deposit date:
- 2012-12-19
Terms of use
- Copyright date:
- 2009
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