Regular Article - Theoretical Physics
Analysis of the X(1835) and related baryonium states with Bethe-Salpeter equation
Department of Physics, North China Electric Power University, Baoding, 071003, P.R.C.
Revised: 27 April 2011
Accepted: 28 April 2011
Published online: 2 June 2011
In this article, we study the mass spectrum of the baryon-antibaryon bound states p , , , , p (1440) , (1660) , and (1600) with the Bethe-Salpeter equation. The numerical results indicate that the p , , , p (1440) , (1660) , bound states maybe exist, and the new resonances X(1835) and X(2370) can be tentatively identified as the p and p (1440) (or N(1400) bound states, respectively, with some gluon constituents, and the new resonance X(2120) may be a pseudoscalar glueball. On the other hand, the Regge trajectory favors identifying the X(1835) , X(2120) and X(2370) as the excited (958) mesons with the radial quantum numbers n = 3 , 4 and 5, respectively.
© SIF, Springer-Verlag Berlin Heidelberg, 2011