Reconstruction of semileptonic b ---> u decays

Albrecht, H.; Ehrlichmann, H.; Glaser, R.; Harder, G.; Kruger, A.; Nau, A.; Nilsson, A.W.; Nippe, A.; Oest, T.; Reidenbach, M.

doi:10.1016/0370-2693(91)90251-K

Reconstruction of semileptonic b ---> u decays

ARGUS

Collaboration

•

H. Albrecht
(
- DESY
)

Oct, 1990

8 pages

Published in:

Phys.Lett.B 255 (1991) 297-304

Published: 1991

DOI:

10.1016/0370-2693(91)90251-K

PDG:

{{\mathit B}^{+}}

\rightarrow

{{\mathit \omega}}{{\mathit \mu}^{+}}{{\mathit \nu}_{{{\mu}}}}

Report number:

DESY-90-121

Experiments:

DESY-DORIS-ARGUS

reference search221 citations

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Abstract: (Elsevier)

Using the ARGUS detector at the e + e − storage ring DORIS II at DESY we have updated our result on charmless semileptonic B decays and searched for direct evidence for b→u transitions through reconstruction of complete events. This approach has successfully identified two ϒ (4 S ) events which contain B meson decays to a non-charm final state. In one case, a B 0 meson is found in the channel π + μ − ν , while in the other a decay B + → ωμ + ν is seen. These events show that the previously observed signal of charmless semileptonic B decays is due to b→u transitions from which we obtain | V ub V cb | = 0.11±0.012 using the model of Altarelli et al.

electron positron: colliding beams
colliding beams: electron positron
electron positron: annihilation
annihilation: electron positron
Upsilon(10570): electroproduction
electroproduction: Upsilon(10570)
B: pair production
pair production: B
B: semileptonic decay
semileptonic decay: B

References(14)

Figures(0)

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