Measurement of the Ds(+) -> eta l(+)nu and Ds(+) → eta'l(+)nu branching ratios
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Issue Date
1995-11Author
Ammar, Raymond G.
Baringer, Philip S.
Bean, Alice
Besson, David Zeke
Coppage, Don
Copty, N.
Davis, Robin E. P.
Hancock, N.
Kotov, S.
Kravchenko, I.
Kwak, Nowhan
Publisher
AMERICAN PHYSICAL SOC
Type
Article
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Show full item recordAbstract
Using the CLEO II detector we measure B(D-s(+) --> eta e(+)nu)/B(D-s(+) --> phi e(+)nu) = 1.24 +/- 0.12 +/- 0.15, B(D-s(+) --> eta'e(+)nu)/B(D-s(+) --> phi e(+)nu) = 0.43 +/- 0.11 +/- 0.07, and B(D-s(+) --> eta'e(+)nu)/B(D-s(+) --> eta e(+)nu) = 0.35 +/- 0.09 +/- 0.07. We find the ratio of vector to pseudoscalar final states, B(D-s(+) --> phi e(+)nu)/B(D-s(+) --> (eta + eta')e(+)nu) = 0.60 +/- 0.06 +/- 0.06, which is similar to the ratio found in nonstrange D decays.
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Citation
BRANDENBURG, G, CINABRO, D, et al. Measurement of the Ds(+) -> eta l(+)nu and Ds(+) → eta'l(+)nu branching ratios. PHYSICAL REVIEW LETTERS. November 1995. 75(21) : 3804-3808
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