[Jlab-seminars] Physics Seminar Announcement Reminder

[Luci Collins]

*Physics Seminar
Friday, Jan. 28, 2011
11:00AM
CEBAF Center AUD.

**Arafat Gabareen Mokhtar
Stanford Linear Accelerator Center
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"Charmonium-like States at the B Factories"*

Many charmonium-like states above the DD threshold have been discovered 
at the B factories, BABAR and Belle. These states are produced in B 
decays, initial state radiation, two-photon production, or in double 
charmonium productions. The nature of these states still not yet been 
completely understood, and in some cases results are not always 
consistent. Among the new charmonium-like states, the Z(4430)-, 
Z1(4050)-, and Z2(4250)- states, reported by the Belle Collaboration, 
have generated a great deal of interest, because such states must have 
minimum quark content of ccdu, i.e. these are four-quark states.
An overview on new charmonium-like states that have been reported by the
BABAR and Belle Collaborations will be given.

 


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