Why was there no uproar when China's Institute of High Energy Physic's BEPC II collider discovered a new

exotic particle last year? http://bes.ihep.ac.cn/news/news1010-1.html

It is believed to be a compound particle, not a fundamental particle. There are swarms of these things.

"Therefore, it is believed to be a new particle. The important feature of this new particle is its narrow width, which is very different from that of a conventional meson \x{2013} the composite of quark and anti-quark. The observation of this new particle has attracted attention of many high energy physicists in the world. This new particle could be a bound state of nucleon and anti-nucleon, or called baryonium state (multi-quark state), which was predicted by theorists long ago."