Elsevier : Fully - heavy tetraquark production by $\gamma\gamma$ interactions in hadronic collisions at the LHC

Gonçalves, Victor P.; Moreira, Bruno D.

doi:10.1016/j.physletb.2021.136249

Article
Report number	arXiv:2101.03798
Title	Fully - heavy tetraquark production by $\gamma\gamma$ interactions in hadronic collisions at the LHC
Author(s)	Gonçalves, Victor P. (Pelotas U.) ; Moreira, Bruno D. (UDESC, CCT)
Publication	2021-05-10
Imprint	2021-01-11
Number of pages	5
Note	5 pages, 2 figures, 2 tables. arXiv admin note: substantial text overlap with arXiv:1809.08125
In:	Phys. Lett. B 816 (2021) 136249
DOI	10.1016/j.physletb.2021.136249
Subject category	hep-ex ; Particle Physics - Experiment ; hep-ph ; Particle Physics - Phenomenology
Accelerator/Facility, Experiment	CERN LHC
Abstract	We investigate the production of the fully - heavy tetraquark states $T_{4Q}$ in the $\gamma \gamma$ interactions present in proton-proton, proton-nucleus and nucleus-nucleus collisions at the CERN Large Hadron Collider (LHC). We focus on the $\gamma \gamma \rightarrow {\cal{Q}}{\cal{Q}}$ (${\cal{Q}} = J/\psi,\, \Upsilon$) subprocess, mediated by the $T_{4Q}$ resonance in the $s$ - channel, and present predictions for the hadronic cross sections considering the kinematical ranges probed by the ALICE and LHCb Collaborations. Our results demonstrate that the experimental study of this process is feasible and can be used to investigate the existence and properties of the $T_{4c}(6900)$ and $T_{4b}(19000)$ states.
Copyright/License	preprint: (License: arXiv nonexclusive-distrib 1.0) The Authors (License: CC-BY-4.0)

$Typical diagram for the production of a fully - heavy tetraquark $T_{4Q}$ state by $\gamma \gamma$ interactions in a hadronic collision. The $T_{4Q} \rightarrow {\cal{Q}} {\cal{Q}}^{\prime}$ decay, where ${\cal{Q}}$ is a quarkonium state, is also represented.$