Yayın: Measurement of the branching fractions of Ds+ → η′X and Ds+ → η′ρ+ in e+e- → Ds+Ds-
Tarih
Kurum Yazarları
Tapan, İlhan
Yazarlar
Achasov, M. N.
Ai, X. C.
Albayrak, O.
Albrecht, M.
Ambrose, D. J.
Amoroso, A.
An, F. F.
An, Q.
Bai, J. Z.
Ferroli, R. Baldini
Danışman
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Yayıncı:
Elsevier
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Özet
We study D-s(+) decays to final states involving the eta' with a 482 pb(-1) data sample collected at root s = 4.009 GeV with the BESIII detector at the BEPCII collider. We measure the branching fractions B(D-s(+) -> eta'X) = (8.8 +/- 1.8 +/- 0.5)% and B(D-s(+) > eta'rho(+)) = (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(+) -> eta'pi(+)pi(0)) < 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(+) -> eta'rho(+)).
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Konusu
Qcd factorization, Decays, Besiii, D-s, Branching fractions, Science & technology, Physical sciences, Astronomy & astrophysics, Physics, nuclear, Physics, particles & fields, Astronomy & astrophysics, Physics