Schwanda, C;
Abe, K;
Abe, K;
Abe, T;
Adachi, I;
Aihara, H;
Akatsu, M;
... Belle Collaboration; + view all
(2004)
Evidence for B+->omega l(+)nu.
PHYS REV LETT
, 93
(13)
, Article 131803. 10.1103/PhysRevLett.93.131803.
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Abstract
We have searched for the decay B+-->omegal(+)nu (l=e or mu) in 78 fb(-1) of Y(4S) data (85x10(6)B (B) over bar events) accumulated with the Belle detector. The final state is fully reconstructed using the omega decay into pi(+)pi(-)pi(0), combined with detector hermeticity to estimate the neutrino momentum. A signal of 414+/-125 events is found in the data, corresponding to a branching fraction of (1.3+/-0.4+/-0.2+/-0.3)x10(-4), where the first two errors are statistical and systematic, respectively. The third error reflects the estimated form-factor uncertainty.
| Type: | Article |
|---|---|
| Title: | Evidence for B+->omega l(+)nu |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.93.131803 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.93.131803 |
| Language: | English |
| Additional information: | The American Physical Society |
| Keywords: | MESON DECAYS, FORM-FACTORS, QUARK-MODEL, BELLE, IDENTIFICATION, KEKB |
| 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/1308438 |
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