Spectroscopy and decays of the fully-heavy tetraquarks
| Title: | Spectroscopy and decays of the fully-heavy tetraquarks |
|---|---|
| Authors: | Anwar, Muhammad Naeem, Ferretti, Jacopo, Guo, Feng-Kun, Santopinto, Elena, Zou, Bing-Song |
| Publication Year: | 2017 |
| Collection: | High Energy Physics - Experiment High Energy Physics - Phenomenology Nuclear Theory |
| Subject Terms: | High Energy Physics - Phenomenology, High Energy Physics - Experiment, Nuclear Theory |
| More Details: | We discuss the possible existence of the fully-heavy tetraquarks. We calculate the ground-state energy of the $bb \bar b \bar b$ bound state, where $b$ stands for the bottom quark, in a nonrelativistic effective field theory framework with one-gluon-exchange (OGE) color Coulomb interaction, and in a relativized diquark model characterized by OGE plus a confining potential. Our analysis advocates the existence of uni-flavor heavy four-quark bound states. The ground state $bb\bar b\bar b$ tetraquark mass is predicted to be $(18.72\pm0.02)$~GeV. Mass inequality relations among the lowest $QQ\bar{Q}\bar{Q}$ state, where $Q\in \{c, b\}$, and the corresponding heavy quarkonia are presented, which give the upper limit on the mass of ground state $QQ\bar{Q}\bar{Q}$. The possible decays of the lowest $bb\bar{b}\bar{b}$ are highlighted, which might provide useful references in the search for them in ongoing LHC experiments, and its width is estimated to be a few tens of MeV. Comment: Version accepted for publication in Eur. Phys. J. C |
| Document Type: | Working Paper |
| Access URL: | http://arxiv.org/abs/1710.02540 |
| Accession Number: | edsarx.1710.02540 |
| Database: | arXiv |
| Description not available. |