Eur. Phys. J. C (2010) 66: 419-428
https://doi.org/10.1140/epjc/s10052-010-1253-2

Regular Article - Theoretical Physics

Analysis of the pseudoscalar partner of the Y(4660) and related bound states

Department of Physics, North China Electric Power University, Baoding, 071003, P.R. China

^* e-mail: wangzgyiti@yahoo.com.cn

Received: 29 October 2009
Revised: 1 January 2010
Published online: 11 February 2010

Abstract

In this article, we study the pseudoscalar bound state η _c ′f ₀(980) (irrespective of the hadro-charmonium and the molecular state) with the QCD sum rules. Considering the SU(3) symmetry of the light flavor quarks and the heavy quark symmetry, we also study the bound states η _c ′σ(400−1200), η _b '''f ₀(980) and η _b '''σ(400−1200), and make reasonable predictions for their masses.