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research article
Measurement of B-0 -> J/psi eta((')) and constraint on the eta - eta ' mixing angle
2012
We measure the branching fractions of B-0 -> J/psi eta((')) decays with the complete Belle data sample of 772 x 10(6) B (B) over bar events collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The results for the branching fractions are: B(B-0 -> J/psi eta) = (12.3 +/-(1.8)(1.7)+/- 0.7) x 10(-6) and B(B-0 -> J/psi eta') < 7.4 x 10(-6) at 90% confidence level. The eta-eta' mixing angle is constrained to be less than 42.2 degrees at 90% confidence level.
Type
research article
Web of Science ID
WOS:000303659200001
Authors
Chang, M.-C.
•
Duh, Y.-C.
•
Lin, J.-Y.
•
Adachi, I.
•
Adamczyk, K.
•
Aihara, H.
•
Asner, D. M.
•
Aushev, T.
•
Bakich, A. M.
•
Bhardwaj, V.
Publication date
2012
Published in
Volume
85
Issue
9
Article Number
091102
Subjects
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
May 25, 2012
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