Measurement of the ratio B (D0 ---> K*- e+ electron-neutrino) / B (D0 ---> K- e+ electron-neutrino)

Crawford, Glen D.; Fulton, R.; Gan, K.K.; Jensen, T.; Johnson, D.R.; Kagan, H.; Kass, R.; Malchow, R.; Morrow, F.; Whitmore, J.

doi:10.1103/PhysRevD.44.3394

Measurement of the ratio B (D0 ---> K*- e+ electron-neutrino) / B (D0 ---> K- e+ electron-neutrino)

CLEO

Collaboration

May, 1991

29 pages

Published in:

Phys.Rev.D 44 (1991) 3394-3401

DOI:

10.1103/PhysRevD.44.3394

PDG:

{{\mathit D}^{0}}

\rightarrow

{{\mathit K}^{-}}{{\mathit \pi}^{+}}

Report number:

CLNS-91-1083,
CLEO-91-4

Experiments:

CESR-CLEO,
CLEO

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Abstract: (APS)

Using the CLEO detector at the Cornell Electron Storage Ring, we have performed a direct measurement of the ratio of D0 semileptonic branching fractions into vector and pseudoscalar final states. We find B(D0→K*−e+νe)B(D0→K−e+νe)=0.51±0.18±0.06, in agreement with the ratio derived by the E691 experiment which compares D+ and D0 final states. We also set an upper limit on the ratio B(D0→K¯*0π−e+νe)B(D0→K*−e+νe)<0.64 at 90% confidence level.

electron positron: colliding beams
colliding beams: electron positron
electron positron: annihilation
annihilation: electron positron
D*(2010): electroproduction
electroproduction: D*(2010)
D*(2010): cascade decay
cascade decay: D*(2010)
D0: semileptonic decay
semileptonic decay: D0

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