Measurement of the B+ -> omega l+ nu and B+ -> eta l+ nu Branching Fractions

Details Measurement of the B+ -> omega l+ nu and B+ -> eta l+ nu Branching Fractions Measurement of the B+ -> omega l+ nu and B+ -> eta l+ nu Branching Fractions

2008-08-26

arxiv.org/abs/0808.3524v2

Phys.Rev.D79:052011,2009

Physics

High Energy Physics

High Energy Physics - Experiment

8 pages, 8 postscript figures, Editorial changes for publication in PRD, Published in Phys. Rev. D 79, 052011 (2009)

Scientific paper

10.1103/PhysRevD.79.052011

We present a study of the charmless semileptonic B-meson decays B+ -> omega l+ nu and B+ -> eta l+ nu. The analysis is based on 383 million BBbar pairs recorded at the Upsilon(4S) resonance with the BABAR detector. The omega mesons are reconstructed in the channel omega -> pi+ pi- pi0 and the eta mesons in the channels eta -> pi+ pi- pi0 and eta -> gamma gamma. We measure the branching fractions B(B+ -> omega l+ nu) = (1.14 +- 0.16 (stat) +- 0.08 (syst)) x 10^-4 and B(B+ -> eta l+ nu) = (0.31 +- 0.06 (stat) +- 0.08 (syst)) x 10^-4.

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