Why quarkonium hybrid coupling to two -wave heavy-light mesons is not suppressed
Journal Article
·
· Physical Review. D.
We examine the couplings of quarkonium hybrids to heavy-light meson pairs in the Born-Oppenheimer approximation for QCD. The lowest hybrid multiplets consist of bound states of the and potentials. We find that the potential can couple to pairs of -wave mesons through string breaking, while the potential cannot. From this observation, we derive model-independent selection rules that contradict previous expectations that quarkonium hybrids are forbidden to decay into pairs of -wave mesons. These Born-Oppenheimer selection rules are consistent with the partial decay widths of the lowest charmonium hybrid with exotic quantum numbers recently calculated using lattice QCD.
Published by the American Physical Society 2024- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- SC0011726
- OSTI ID:
- 2284015
- Alternate ID(s):
- OSTI ID: 2287127
- Journal Information:
- Physical Review. D., Journal Name: Physical Review. D. Journal Issue: 3 Vol. 109; ISSN PRVDAQ; ISSN 2470-0010
- Publisher:
- American Physical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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