https://doi.org/10.1140/epja/i2005-10140-1
Original Article
Covariant tensor formalism for partial-wave analyses of ψ decays into γB¯, γγV and ψ(2s)↦γχc0,1,2 with χc0,1,2↦K¯πand 2π+2π-
1
Institute of High Energy Physics, CAS, P.O. Box 918(4), 100049, Beijing, PRC
2
Department of Physics, Xinjiang University, 830046, Urumqi, PRC
3
CCAST (World Laboratory), P.O. Box 8730, 100080, Beijing, PRC
Received:
13
June
2005
Accepted:
18
August
2005
Published online:
11
October
2005
With accumulation of high statistics data at BES and CLEO-c, many new interesting channels can get enough statistics for partial-wave analysis (PWA). Among them, ψ↦γp¯,γΛ¯,γΣ¯,γΞ¯ channels provide a good place for studying baryon-antibaryon interactions; the double radiative decays ψ↦γγV with V ≡ ρ,ω,φ have a potential to provide information on the flavor content of any meson resonances (R) with positive charge parity (C = +) and mass above 1 GeV through ψ↦γR↦γγV; ψ(2s)↦γχc0,1,2 with χc0,1,2↦K¯π+π- and 2π+2π- decays are good processes to study χcJ charmonium decays. Using the covariant tensor formalism, here we provide theoretical PWA formulae for these channels.
PACS: 13.20.Gd Leptonic, semileptonic, and radiative decays of mesons: Decays of J/ψ, ϒ, and other quarkonia – / 13.25.Gv Hadronic decays of mesons: Decays of J/ψ, ϒ, and other quarkonia – / 13.66.Bc Hadron production in e - e + interactions – / 11.80.Et Partial-wave analysis –
© Società Italiana di Fisica and Springer-Verlag, 2005