https://doi.org/10.1140/epja/i2011-11071-x
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.
Received:
17
March
2011
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
