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Search for invisible decays of the (1S)

Author(s)
Zhao, M.; Yamamoto, R. K.; Sciolla, Gabriella; Henderson, Shawn Wesley; Dujmic, Denis; Spitznagel, Michael A; Fisher, Peter H; Cowan, Ray F; ... Show more Show less
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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Abstract
We search for invisible decays of the Υ(1S) meson using a sample of 91.4×10[superscript 6] Υ(3S) mesons collected at the BABAR/PEP-II B factory. We select events containing the decay Υ(3S)→π[superscript +]π[superscript -]Υ(1S) and search for evidence of an undetectable Υ(1S) decay recoiling against the dipion system. We set an upper limit on the branching fraction B(Υ(1S)→invisible)<3.0×10[superscript -4] at the 90% confidence level.
Date issued
2009-09
URI
http://hdl.handle.net/1721.1/52742
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
BABAR Collaboration et al. “Search for Invisible Decays of the Upsilon (1S).” Physical Review Letters 103.25 (2009): 251801. © 2009 The American Physical Society
Version: Final published version
ISSN
0031-9007

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