System Upgrade on Tue, May 28th, 2024 at 2am (EDT)
Existing users will be able to log into the site and access content. However, E-commerce and registration of new users may not be available for up to 12 hours.For online purchase, please visit us again. Contact us at customercare@wspc.com for any enquiries.
Results: 1 - 1of1
Save this search
Please login to be able to save your searches and receive alerts for new content matching your search criteria.
Heavy quark spin in an S-wave meson-antimeson state
Preview AbstractThe newly observed exotic mesons above
threshold were widely discussed in the molecular picture. To understand deeper their structures, we here discuss the spin (
) of a heavy quark-antiquark pair in an S-wave meson-antimeson system by constructing explicitly the spin wave function. One finds two selection rules for 
(a) the total angular momentum J is larger than the maximum angular momentum of the light degree of freedom or smaller than the minimum one; (b) JC = 1+, 2-, 3+, ⋯ if the two mesons are different but belong to the same doublet. This feature may be used to constrain possible strong decay channels.