A Study of Exclusive Charmless Semileptonic B Decay and |V(ub)| - INSPIRE

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A Study of Exclusive Charmless Semileptonic B Decay and |V(ub)|

CLEO

Collaboration

•

N.E. Adam
(
- Cornell U., Phys. Dept.
)

Mar, 2007

8 pages

Published in:

Phys.Rev.Lett. 99 (2007) 041802

e-Print:

hep-ex/0703041 [hep-ex]

DOI:

10.1103/PhysRevLett.99.041802

PDG:

{{\mathit B}^{+}}

\rightarrow

{{\mathit \eta}}{{\mathit \ell}^{+}}{{\mathit \nu}_{{{{{\mathit \ell}}}}}}

Report number:

CLNS-06-1982,
CLEO-06-22

Experiments:

CESR-CLEO

View in:

ADS Abstract Service

reference search74 citations

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Abstract:

We study semileptonic B decay to the exclusive charmless states pi, rho/omega, eta and eta' using the 16 fb-1 CLEO Upsilon(4S) data sample. We find B(B^0 -> pi^-l^+nu) = (1.37 +- 0.15_stat +- 0.11_sys) x 10^-4 and B(B^0 -> rho^- l^+ nu) = (2.93 +- 0.37_stat +- 0.37_sys) x 10^-4, and find evidence for B^+ -> eta' l^+ nu, with B(B^+ -> eta' l^+ nu) = (2.66 +- 0.80_stat +- 0.56_sys ) x 10^-4. From our B -> pi l nu rate for q^2 > 16 GeV^2 and lattice QCD we find |V_{ub}| = (4.3 +- 0.4_stat +- 0.2_syst +0.6-0.4_thy) x 10^-3.

13.20.He
12.15.Hh
B mesons
CP invariance
quantum chromodynamics
semileptonic decays
electron positron: colliding beams
electron positron: annihilation
Upsilon(10570): electroproduction
B: pair production

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