A Search for Invisible Decays of the Upsilon(1S)

The BaBar Collaboration, Philip Clark

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

We search for invisible decays of the Upsilon(1S) meson using a sample of 91.4 x 10^{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 BR(Upsilon(1S) -> invisible)
Original languageEnglish
JournalPhysical Review Letters
Publication statusPublished - 20 Aug 2009

Keywords / Materials (for Non-textual outputs)

  • hep-ex


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