Search for Invisible Decay of the $Υ(1S)$

Details Search for Invisible Decay of the $Υ(1S)$ Search for Invisible Decay of the $Υ(1S)$

2006-11-24

arxiv.org/abs/hep-ex/0611041v3

Phys.Rev.Lett.98:132001,2007

Physics

High Energy Physics

High Energy Physics - Experiment

6 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.98.132001

We report results of a search for the invisible decay of the Upsilon(1S) via the Upsilon(3S)->pi+pi-Upsilon(1S) transition using a data sample of 2.9 fb^{-1} at the Upsilon(3S) resonance. The data were collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. No signal is found, and an upper limit for the branching fraction at the 90% confidence level is determined to be B(Upsilon(1S)->invisible) < 2.5x10^{-3}.

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