Abstract |
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We present preliminary measurements of branching fractions and charge
asymmetries for the B meson decays B -> eta(')K*, B -> eta(')rho, and B+
-> eta' pi+. The data were recorded with the BaBar detector at PEP-II
and correspond to 89 x 10^6 B B-bar pairs produced in e+e- annihilation
through the Upsilon(4S) resonance. We find the branching fractions
B(B0 -> eta K*0) = (19.0 +2.2 -2.1 +/- 1.3) x 10^-6,
B(B+ -> eta K*+) = (25.7 +3.8 -3.6 +/- 1.8) x 10^-6,
B(B+ -> eta rho+) = (10.5 +3.1 -2.8 +/- 1.3) x 10^-6,
B(B+ -> eta' rho+) = (14.0 +5.1 -4.6 +/- 1.9) x 10^-6
(< 22 x 10^-6 with 90% confidence), and
B(B+ -> eta' pi+) = (2.8 +1.3 -1.0 +/- 0.3) x 10^-6 (< 4.5 x 10^-6).
We also set 90\% CL upper limits of
B(B0 -> eta' K*0) < 6.4 x 10^-6 and
B(B+ -> eta' K*+) < 12 x 10^-6.
The time-integrated charge asymmetries are
Ach(eta K*0) = +0.03 +/- 0.11 +/- 0.02,
Ach(eta K*+) = +0.15 +/- 0.14 +/- 0.02, and
Ach(eta rho+) = +0.06 +/- 0.29 +/- 0.02.
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Revisions and Files |
1 revised July 14, 2003
File Date Thumbnails | File Name |
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07-AUG-2003 |
abstract.tex |
Abstract |
txt |
0.93 |
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07-AUG-2003 |
babar-conf-0317.pdf |
Paper (journal paper or conference submission by BABAR Collaboration) |
pdf |
265.17 |
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07-AUG-2003 |
babar-conf-0317.ps.gz |
Paper (journal paper or conference submission by BABAR Collaboration) |
ps.gz |
163.56 |
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07-AUG-2003 |
chisq etarho etaprho etapi prelim.eps |
Figure or plot |
eps |
44.26 |
Talk version of distributions of -2 ln L convolved
with uncorrelated systematic errors for branching fraction measurements. |
07-AUG-2003 |
fig01.eps |
Figure or plot |
eps |
93.51 |
Feynman diagrams for the decays
B -> (eta,eta')(K,K+). |
07-AUG-2003 |
fig02.eps |
Figure or plot |
eps |
86.16 |
Feynman diagrams for the decays
B -> (eta,eta')(rho,pi). |
07-AUG-2003 |
fig03.eps |
Figure or plot |
eps |
51.57 |
Projections of the B candidate
Mes and delta E for eta K* |
07-AUG-2003 |
fig04.eps |
Figure or plot |
eps |
26.33 |
Projections of the B candidate
Mes and delta E for eta rho |
07-AUG-2003 |
fig05.eps |
Figure or plot |
eps |
42.65 |
Distributions of $2 ln L convolved
with uncorrelated systematic errors for branching fraction measurements. |
07-AUG-2003 |
proj etakstar prelim.eps |
Figure or plot |
eps |
54.62 |
Talk version of eta K* Mes delta E projection plots. |
07-AUG-2003 |
proj etakstar prelim submodes.eps |
Figure or plot |
eps |
59.69 |
mES, delta E projections with submodes:
eta K*0
- red histogram: eta(3pi)K*0
eta K*+
- red: eta(3pi)K*+(K+ pi0)
- grey: eta(gg) K*+(K+ pi0)
- purple: eta(3pi)K*+(Ks pi+)
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07-AUG-2003 |
proj etarho prelim.eps |
Figure or plot |
eps |
27.85 |
Talk version of eta rho Mes delta E projection plots. |
07-AUG-2003 |
proj etarho prelim submode.eps |
Figure or plot |
eps |
28.65 |
mES, delta E projections with submodes:
eta rho+
- red: eta(3pi)rho+
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Submitted To | 2003 International Symposium on Lepton and Photon Interactions at High Energies |
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