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Fully-heavy tetraquark production by $\gamma \gamma$ interactions in hadronic collisions at the LHC
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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.
Forward citations
Cited by 3 Pith papers
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Two photon decay width of the fully charmed tetraquarks: revisiting prospects for ultraperipheral collisions
Using recent four-body quark model wave functions and NRQCD, the authors compute two-photon couplings and UPC cross sections for fully charmed tetraquarks, showing resonant terms exceed continuum in J/ψJ/ψ but not in ...
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Two photon decay width of the fully charmed tetraquarks: revisiting prospects for ultraperipheral collisions
Computes two-photon couplings of scalar and tensor fully-charmed tetraquarks via NRQCD from recent four-body wave functions and finds resonant terms dominate J/ψJ/ψ but not diphoton production in UPCs, disagreeing wit...
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AI-powered full-data set search for new physics in ultraperipheral and diffractive events
Autoencoders trained on simulated known UPC processes flag injected J/psi to 4 pi and pentaquark events with high reported purity in toy ALICE-like data.
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