Yayın: Study of j/ψ → ηφπ+π- at besIII
Dosyalar
Tarih
Kurum Yazarları
Yazarlar
Ablikim, M.
Achasov, M. N.
Ai, X. C.
Albayrak, O.
Albrecht, M.
Ambrose, D. J.
Amoroso, A.
An, F. F.
An, Q.
Bai, J. Z.
Danışman
Dil
Türü
Yayıncı:
Amer
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Özet
invariant mass spectrum of phi f(0)(980) with a statistical significance of greater than 10 sigma. The corresponding mass and width are determined to be M = 2200 +/- 6(stat) +/- 5(syst) MeV/c(2) and Gamma = 104 +/- 15(stat) +/- 15(syst) MeV, respectively, and the product branching fraction is measured to be B(J/psi ->eta Y(2175), Y(2175)->phi f(0)(980), f(0)(980)->pi(+)pi(-)) = (1.20 +/- 0.14(stat)+/- 0.37(syst))x10(-4). The results are consistent within errors with those of previous experiments. We also measure the branching fraction of J/psi ->phi f(1)(1285) with f(1)(1285)->eta pi(+)pi(-) and set upper limits on the branching fractions for J/psi ->phi eta(1405)/phi X(1835)/phi X(1870) with eta(1405)/X(1835)/X(1870)->eta pi(+)pi(-) at the 90% confidence level.
Açıklama
Kaynak:
Anahtar Kelimeler:
Konusu
Resonances, State, Collisions, Threshold, Glueball, Y(2175), Science & technology, Physical sciences, Astronomy & astrophysics, Physics, particles & fields, Astronomy & astrophysics, Physics