Covariant tensor formalism for partial wave analyses of $ψ$ decays into $γB\bar B$, $γγV$ and $ψ(2S)\toγχ_{c0,1,2}$ with $χ_{c0,1,2}\to K\bar K π^+π^- $ and $2π^+2π^-$

Details Covariant tensor formalism for partial wave analyses of $ψ$ decays into $γB\bar B$, $γγV$ and $ψ(2S)\toγχ_{c0,1,2}$ with $χ_{c0,1,2}\to K\bar K π^+π^- $ and $2π^+2π^-$ Covariant tensor formalism for partial wave analyses of $ψ$ decays into $γB\bar B$, $γγV$ and $ψ(2S)\toγχ_{c0,1,2}$ with $χ_{c0,1,2}\to K\bar K π^+π^- $ and $2π^+2π^-$

2005-08-07

arxiv.org/abs/hep-ph/0508087v1

Eur.Phys.J. A26 (2005) 125-134

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages

Scientific paper

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, $\psi \to \gamma p\bar p, \gamma\Lambda\bar \Lambda, \gamma\Sigma \bar\Sigma, \gamma\Xi\bar \Xi$ channels provide a good place for studying baryon-antibaryon interactions; the double radiative decays $\psi\to\gamma\gamma V$ with $V\equiv \rho,\omega,\phi$ 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 $\psi\to\gamma R \to\gamma\gamma V$; $\psi(2S)\to\gamma\chi_{c0,1,2}$ with $\chi_{c0,1,2}\to K\bar K \pi^+\pi^- $ and $2\pi^+2\pi^-$ decays are good processes to study $\chi_{cJ}$ charmonium decays. Using the covariant tensor formalism, here we provide theoretical PWA formulae for these channels.

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