Eur. Phys. J. A (2005) 26: 125-134
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)↦γχ_c0,1,2 with χ_c0,1,2↦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

Abstract

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)↦γχ_c0,1,2 with χ_c0,1,2↦K¯π⁺π^- and 2π⁺2π^- decays are good processes to study χ_cJ charmonium decays. Using the covariant tensor formalism, here we provide theoretical PWA formulae for these channels.