Evidence for B^+ -> omega l^+ nu
High Energy Physics - Experiment
2012-08-27 v1
Abstract
We have searched for the decay B^+ -> omega l^+ nu in 78 fb^-1 of Y(4S) data (85.0 million BBbar events) accumulated with the Belle detector. The final state is fully reconstructed using the omega decay into pi^+ pi^- pi^0 and detector hermeticity to estimate the neutrino momentum. 155 +/- 47 signal events are found in the data, corresponding to a branching fraction of (1.3 +/- 0.4 +/- 0.2 +/- 0.3) x 10^-4, where the first two errors are statistical and systematic. The third error is due to the estimated form-factor uncertainty. (This result is preliminary.)
Cite
@article{arxiv.hep-ex/0307075,
title = {Evidence for B^+ -> omega l^+ nu},
author = {Belle Collaboration},
journal= {arXiv preprint arXiv:hep-ex/0307075},
year = {2012}
}
Comments
10 pages, 1 figure, contributed paper for 2003 summer conferences