Stable, Doubly Heavy Tetraquark Mesons [Slides]
- Munich Univ. of Technology (Germany); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Heavy-quark symmetry implies stable heavy tetraquark mesons $$Q_iQ_j \overline{q}_k\overline{q}_l$$ In the limit of very heavy quarks Q, novel narrow doubly heavy tetraquark states must exist. The lightest double-beauty states composed of $$bb\overline{u}\overline{d}$$, $$bb\overline{u}\overline{s}$$, and $$bb\overline{d}\overline{s}$$ will be stable against strong decays. Heavier $$bb\overline{q}_k \bar{q}_l$$ states, double-charm states $$cc\overline{q}_k \overline{q}_l$$ , mixed $$bc\overline{q}_k\overline{q}_l$$ states, will dissociate into pairs of heavy-light mesons. Observing a weakly decaying double-beauty state 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)
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1460380
- Report Number(s):
- FERMILAB-SLIDES-18-034-T; oai:inspirehep.net:1682372
- Country of Publication:
- United States
- Language:
- English
Similar Records
Stable, Doubly Heavy Tetraquark Mesons [Slides]
Heavy-Quark Symmetry Implies Stable Heavy Tetraquark Mesons