Understanding the Difference Between Eta Meson & Eta Prime Meson

[owenhuang]

I am confused by eta meson and eta prime meson . I can not the difference between them .anybody can help me ? who can tell me what are they made up ?
some textbook say that the neutral eta meson is considered to be a quark combination
(uubar+ddbar-2*ssbar)/6^(1/2),but I am still not clear.

 

[humanino]

Hi,

it will not help to open multiple threads on the same question. Thanks

 

[owenhuang]

ok ,get it !

 

[humanino]

It will not be easy for me to reply right away. From the top of my head, the eta did not have s\bar{s} components. As for the eta', you might be happy to hear that even professional specialists are not sure that there is no glue content in it

 

[humanino]

From the top of my head, the eta did not have s\bar{s} components.

The top of my head is not vey high this morning
This is wrong. You might want to take a look (for instance) at On the gluon content of the eta and eta' mesons[/color] where fits to available data are given.

 

[owenhuang]

thanks !