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Author  |
Belov, I.; Giachino, A.; Santopinto, E. |
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Title |
Fully charmed tetraquark production at the LHC experiments |
Type |
Journal Article |
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Year |
2025 |
Publication |
Journal of High Energy Physics |
Abbreviated Journal |
J. High Energy Phys. |
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Volume |
01 |
Issue |
1 |
Pages |
093 - 29pp |
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Keywords |
Specific QCD Phenomenology; Properties of Hadrons; Scattering Amplitudes |
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Abstract |
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. |
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Address |
[Belov, Ilia; Santopinto, Elena] Sez Genova, INFN, Via Dodecaneso 33, I-16146 Genoa, Italy, Email: ilia.belov@ge.infn.it; |
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Publisher |
Springer |
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Language |
English |
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Original Title |
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Series Volume |
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Edition |
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ISSN |
1029-8479 |
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Notes |
WOS:001410968700001 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
6488 |
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