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First observation of psi(2S) ---> p anti-n pi- + c.c.

Collaboration
•
May, 2006
18 pages
Published in:
  • Phys.Rev.D 74 (2006) 012004
e-Print:
DOI:
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Abstract:
Using 14 million ψ(2S)\psi(2S) events collected with the Beijing Spectrometer (BESII) at the Beijing Electron-Positron Collider, the branching fractions of ψ(2S)\psi(2S) decays to pnˉπ−p \bar{n} \pi^- and pˉnπ+\bar{p} n \pi^+ and the branching fractions of the main background channels ψ(2S)→pnˉπ−π0\psi(2S) \to p \bar{n} \pi^-\pi^0, ψ(2S)→γχc0→γpnˉπ−\psi(2S) \to \gamma\chi_{c0} \to \gamma p \bar{n} \pi^-, ψ(2S)→γχc2→γpnˉπ−\psi(2S) \to \gamma\chi_{c2} \to \gamma p \bar{n} \pi^-, and ψ(2S)→γχcJ→γpnˉπ−π0\psi(2S) \to \gamma \chi_{cJ} \to \gamma p \bar{n} \pi^- \pi^0 are determined. The contributions of the N∗N^{\ast} resonances in ψ(2S)→pnˉπ−+c.c.\psi(2S) \to p \bar{n} \pi^- +c.c. are also discussed.
  • 13.75.Gx
  • 14.20.Gk
  • 13.25.Gv
  • electron positron: colliding beams
  • electron positron: annihilation
  • psi(3685): electroproduction
  • psi(3685): hadronic decay
  • psi(3685): radiative decay
  • chi/c0(3415): hadronic decay
  • chi/c2(3555): hadronic decay