2001/05/31 by Jonathan L. Rosner · 1 citation
Physics and Astronomy · #hep-ph
paper · pdf · doi:10.1103/physrevd.64.094002
published as Phys.Rev.D64:094002,2001 · 11 pages, LaTeX, no figures, to be submitted to Phys. Rev. D. New discussions and references added
arxiv created 2001/06/05 · arxiv updated 2014/11/17
The \ppp = ψ(3770) resonance is expected to be mainly c c(13D1), but tensor forces and coupling to charmed particle pairs can mix it with \pp(23S1) and other states. Implications of this mixing for decays of \ppp to non-charmed final states are discussed. (i) The ratio Γ(\ppp → γ+ χc2)/ Γ(\ppp → γ+ χc0) is expected to be highly suppressed if \ppp is a pure D-wave state, and is enchanced by mixing. (ii) The expected decay \pp → ρπ and other ``missing'' modes can appear as corresponding \ppp partial widths, enhanced by a factor depending on the mixing angle. General arguments then suggest a branching ratio of about 1%, give or take a factor of 2, for charmless hadronic decays of \ppp. (iii) Enhancements can appear in penguin amplitudes in B decays, B → K η' branching ratios, and direct CP-violating asymmetries in B → K π decays.