Journal
PHYSICAL REVIEW LETTERS
Volume 103, Issue 25, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.103.251801
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Funding
- 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
- STFC [ST/F008015/1, ST/H001166/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/H001166/1, ST/F008015/1, PP/E000444/1] Funding Source: researchfish
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We search for invisible decays of the Upsilon(1S) meson using a sample of 91.4x10(6) Upsilon(3S) mesons collected at the BABAR/PEP-II B factory. We select events containing the decay Upsilon(3S)->pi(+)pi(-)Upsilon(1S) and search for evidence of an undetectable Upsilon(1S) decay recoiling against the dipion system. We set an upper limit on the branching fraction B(Upsilon(1S)-> invisible)< 3.0x10(-4) at the 90% confidence level.
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