Measurement of the branching fractions of Ds+→η'X and Ds+→η'ρ+ in e+e-→Ds+Ds- /M. Ablikim, M. N. Achasov, X. C. Ai [et.al.]

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Другой Автор
Ablikim, M.
Ai, X. C.
Chelkov, G. A.
Achasov, M. N.
Источник
Physics Letters B 2015 Vol. 750. P. 466-474
Аннотация
We study D+s decays to final states involving the η with a 482 pb−1 data sample collected at √s = 4.009 GeV with the BESIII detector at the BEPCII collider. We measure the branching fractionsB(D+s →η X) = (8.8 ± 1.8 ± 0.5)% and B(D+s →ηρ+) = (5.8 ± 1.4 ± 0.4)% where the first uncertainty is statistical and the second is systematic. In addition, we estimate an upper limit on the non-resonant branching ratio B(D+s →ηπ+π0) < 5.1% at the 90% confidence level. Our results are consistent with CLEO’s recent measurements and help to resolve the disagreement between the theoretical prediction and CLEO’s previous measurement of B(D+s →ηρ+).
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$a Measurement of the branching fractions of Ds+→η'X  and Ds+→η'ρ+ in e+e-→Ds+Ds- $c M. Ablikim, M. N. Achasov, X. C. Ai [et.al.]
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$a We study D+s decays to final states involving the η with a 482 pb−1 data sample collected at √s = 4.009 GeV with the BESIII detector at the BEPCII collider. We measure the branching fractionsB(D+s →η X) = (8.8 ± 1.8 ± 0.5)% and B(D+s →ηρ+) = (5.8 ± 1.4 ± 0.4)% where the first uncertainty is statistical and the second is systematic. In addition, we estimate an upper limit on the non-resonant branching ratio B(D+s →ηπ+π0) < 5.1% at the 90% confidence level. Our results are consistent with CLEO’s recent measurements and help to resolve the disagreement between the theoretical prediction and CLEO’s previous measurement of B(D+s →ηρ+).
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$a Chelkov, G. A.
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$a Achasov, M. N.
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$a Томский государственный университет $b Радиофизический факультет $b Научные подразделения РФФ
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$t Physics Letters B $d 2015 $g Vol. 750. P. 466-474 $x 0370-2693
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статьи в журналах
Резюме
We study D+s decays to final states involving the η with a 482 pb−1 data sample collected at √s = 4.009 GeV with the BESIII detector at the BEPCII collider. We measure the branching fractionsB(D+s →η X) = (8.8 ± 1.8 ± 0.5)% and B(D+s →ηρ+) = (5.8 ± 1.4 ± 0.4)% where the first uncertainty is statistical and the second is systematic. In addition, we estimate an upper limit on the non-resonant branching ratio B(D+s →ηπ+π0) < 5.1% at the 90% confidence level. Our results are consistent with CLEO’s recent measurements and help to resolve the disagreement between the theoretical prediction and CLEO’s previous measurement of B(D+s →ηρ+).