Search for invisible decays of the (1S)

Search for invisible decays of the (1S)

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...

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Bibliographic Details
Main Authors: Zhao, M., Yamamoto, R. K., Sciolla, Gabriella, Henderson, Shawn Wesley, Dujmic, Denis, Spitznagel, Michael A, Fisher, Peter H, Cowan, Ray F
Other Authors: Massachusetts Institute of Technology. Department of Physics
Format: Article
Language:en_US
Published: American Physical Society 2010
Online Access:http://hdl.handle.net/1721.1/52742
https://orcid.org/0000-0002-8667-5660
Description
Summary: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.

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