Heavy-Quark Symmetry Implies Stable Heavy Tetraquark Mesons
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
For very heavy quarks Q, relations derived from heavy-quark symmetry predict the existence of novel narrow doubly heavy tetraquark states of the form QiQj¯qk¯ql (subscripts label flavors), where q designates a light quark. By evaluating finite-mass corrections, we predict that double-beauty states composed of bb¯u¯d, bb¯u¯s, and bb¯d¯s will be stable against strong decays, whereas the double-charm states cc¯qk¯ql, mixed beauty+charm states bc¯qk¯ql, and heavier bb¯qk¯ql states will dissociate into pairs of heavy-light mesons. Furthermore, observation of a new double-beauty state through its weak decays would establish the existence of tetraquarks and illuminate the role of heavy color-antitriplet diquarks as hadron constituents.
- Research Organization:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Grant/Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1376075
- Alternate ID(s):
- OSTI ID: 1408937
- Report Number(s):
- FERMILAB-PUB-17-289-T; arXiv:1707.09575; PRLTAO; 1613669
- Journal Information:
- Physical Review Letters, Vol. 119, Issue 20; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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