Measurement of the B+→ωl+ν and B+→ηl+ν branching fractions

Measurement of the B+→ωl+ν and B+→ηl+ν branching fractions

We present a study of the charmless semileptonic B-meson decays B+→ωl+ν and B+→ηl+ν. The analysis is based on 3.83×108 BB̄ pairs recorded at the Υ(4S) resonance with the BABAR detector. The ω mesons are reconstructed in the channel ω→π+π-π0 and the η mesons in the channels η→π+π-π0 and η→γγ. We meas...

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Bibliografiske detaljer
Main Authors: Aubert, B, Bona, M, Karyotakis, Y, Lees, J, Poireau, V, Prencipe, E, Prudent, X, Tisserand, V, Garra Tico, J, Grauges, E, Lopez, L, Palano, A, Pappagallo, M, Eigen, G, Stugu, B, Sun, L, Abrams, G, Battaglia, M, Brown, D, Cahn, R, Jacobsen, R, Kerth, LT, Kolomensky, Y, Lynch, G, Osipenkov, I
Format: Journal article
Sprog:English
Udgivet: 2009
Beskrivelse
Summary:We present a study of the charmless semileptonic B-meson decays B+→ωl+ν and B+→ηl+ν. The analysis is based on 3.83×108 BB̄ pairs recorded at the Υ(4S) resonance with the BABAR detector. The ω mesons are reconstructed in the channel ω→π+π-π0 and the η mesons in the channels η→π+π-π0 and η→γγ. We measure the branching fractions B(B+→ωl+ν)=(1.14±0.16stat±0. 08syst)×10-4 and B(B+→ηl+ν)=(0.31±0.06stat±0. 08syst)×10-4. © 2009 The American Physical Society.

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