X(1835): A Possible baryonium?

coupling and suppressed mesonic coupling of X(1835) and (2) the suppression of the three-body strange final states strongly indicate that X(1835) may be a

p\bar p

baryonium. We also point out that the branching ratio of

X(1835)\to\eta \pi\pi

should be bigger than that of

X(1835)\to\eta^\prime \pi\pi

. If BES further confirms the non-observation of X(1835) in the

\eta\pi\pi

channel, that will be very puzzling. Finally, X(1835) may be used a tetraquark generator if X(1835) is really established as a baryonium state.

13.25.Jx
11.30.Er
12.39.Mk
J/psi(3100): radiative decay
p: pair production
mass spectrum: (anti-p p)
new particle: X(1835)
anti-p p: bound state
baryonium: coupling
effective Lagrangian

References(20)

Figures(0)

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