A Search for Invisible Decays of the Upsilon(1S)
Journal Article
·
· Phys.Rev.Lett.103:251801,2009
We search for invisible decays of the {Upsilon}(1S) meson using a sample of 91.4 x 10{sup 6} {Upsilon}(3S) mesons collected at the BABAR/PEP-II B Factory. We select events containing the decay {Upsilon}(3S) {yields} {pi}{sup +}{pi}{sup -} {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 {Beta}({Upsilon}(1S) {yields} invisible) < 3.0 x 10{sup ?4} at the 90% confidence level.
- Research Organization:
- Stanford Linear Accelerator Center (SLAC)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-76SF00515
- OSTI ID:
- 968527
- Report Number(s):
- SLAC-PUB-13757; arXiv:0908.2840
- Journal Information:
- Phys.Rev.Lett.103:251801,2009, Journal Name: Phys.Rev.Lett.103:251801,2009
- Country of Publication:
- United States
- Language:
- English
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