%0 Journal Article
%T Fully charmed tetraquark production at the LHC experiments
%A Belov, I.
%A Giachino, A.
%A Santopinto, E.
%J Journal of High Energy Physics
%D 2025
%V 01
%N 1
%I Springer
%@ 1029-8479
%G English
%F Belov_etal2025
%O WOS:001410968700001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=6488), last updated on Mon, 10 Feb 2025 08:01:09 +0000
%X We develop the formalism for production of a fully heavy tetraquark and apply it to the calculation of pp -> T4c + X cross-sections. We demonstrate that the production cross-section of a fully heavy tetraquark, even if it is a diquark-antidiquark cluster, can be obtained in the meson-like basis, for which the spin-color projection technique is well established. Prompted by the recent LHCb, ATLAS and CMS data, we perform a pQCD calculation of O(alpha s5) short-distance factors in the dominant channel of gluon fusion, and match these to the four-body T4c wave functions in order to obtain the unpolarized T4c(0++, 1+-, 2++) cross-sections. The novelty in comparison with the recently published article [1] lies in the fact that we predict the absolute values as well as the d sigma/dpT spectra in the kinematic ranges accessible at the ongoing LHC experiments. From the comparison with the signal yield at LHCb we derive the constraints on the Phi <middle dot> Br(J/psi J/psi) (reduced wave function times branching) product for the T4c candidates for X(6900) and observe that X(6900) is compatible with a 2++(2S) state.
%K Specific QCD Phenomenology
%K Properties of Hadrons
%K Scattering Amplitudes
%R 10.1007/JHEP01(2025)093
%U https://arxiv.org/abs/2409.12070
%U https://doi.org/10.1007/JHEP01(2025)093
%P 093-29pp