Tajima, O;
Hayashii, H;
Hazumi, M;
Inami, K;
Iwasaki, Y;
Uehara, S;
Abe, K;
... Belle Collaboration; + view all
(2007)
Search for invisible decay of the Upsilon(1S).
PHYS REV LETT
, 98
(13)
, Article 132001. 10.1103/PhysRevLett.98.132001.
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Abstract
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).
| Type: | Article |
|---|---|
| Title: | Search for invisible decay of the Upsilon(1S) |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.98.132001 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.98.132001 |
| Language: | English |
| Additional information: | © 2007 The American Physical Society |
| Keywords: | BELLE DETECTOR |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1308539 |
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