Fully charmed tetraquark production at the LHC experiments
Abstract We develop the formalism for production of a fully heavy tetraquark and apply it to the calculation of pp → T 4c + 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 b...
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| Language: | English |
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SpringerOpen
2025-01-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP01(2025)093 |
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| author | Ilia Belov Alessandro Giachino Elena Santopinto |
| author_facet | Ilia Belov Alessandro Giachino Elena Santopinto |
| author_sort | Ilia Belov |
| collection | DOAJ |
| description | Abstract We develop the formalism for production of a fully heavy tetraquark and apply it to the calculation of pp → T 4c + 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 $$ \mathcal{O} $$ ( α s 5 $$ {\alpha}_s^5 $$ ) short-distance factors in the dominant channel of gluon fusion, and match these to the four-body T 4c wave functions in order to obtain the unpolarized T 4c (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 dσ/dp T 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 Φ · Br(J/ψ J/ψ) (reduced wave function times branching) product for the T 4c candidates for X(6900) and observe that X(6900) is compatible with a 2++(2S) state. |
| format | Article |
| id | doaj-art-4b1fe9ca769d476ea4130ca73f7dc55d |
| institution | Kabale University |
| issn | 1029-8479 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-4b1fe9ca769d476ea4130ca73f7dc55d2025-02-09T12:07:42ZengSpringerOpenJournal of High Energy Physics1029-84792025-01-012025112910.1007/JHEP01(2025)093Fully charmed tetraquark production at the LHC experimentsIlia Belov0Alessandro Giachino1Elena Santopinto2INFN, Sezione di GenovaDepartamento de Física Teórica and IFIC, Centro Mixto Universidad de Valencia-CSICINFN, Sezione di GenovaAbstract We develop the formalism for production of a fully heavy tetraquark and apply it to the calculation of pp → T 4c + 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 $$ \mathcal{O} $$ ( α s 5 $$ {\alpha}_s^5 $$ ) short-distance factors in the dominant channel of gluon fusion, and match these to the four-body T 4c wave functions in order to obtain the unpolarized T 4c (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 dσ/dp T 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 Φ · Br(J/ψ J/ψ) (reduced wave function times branching) product for the T 4c candidates for X(6900) and observe that X(6900) is compatible with a 2++(2S) state.https://doi.org/10.1007/JHEP01(2025)093Specific QCD PhenomenologyProperties of HadronsScattering Amplitudes |
| spellingShingle | Ilia Belov Alessandro Giachino Elena Santopinto Fully charmed tetraquark production at the LHC experiments Journal of High Energy Physics Specific QCD Phenomenology Properties of Hadrons Scattering Amplitudes |
| title | Fully charmed tetraquark production at the LHC experiments |
| title_full | Fully charmed tetraquark production at the LHC experiments |
| title_fullStr | Fully charmed tetraquark production at the LHC experiments |
| title_full_unstemmed | Fully charmed tetraquark production at the LHC experiments |
| title_short | Fully charmed tetraquark production at the LHC experiments |
| title_sort | fully charmed tetraquark production at the lhc experiments |
| topic | Specific QCD Phenomenology Properties of Hadrons Scattering Amplitudes |
| url | https://doi.org/10.1007/JHEP01(2025)093 |
| work_keys_str_mv | AT iliabelov fullycharmedtetraquarkproductionatthelhcexperiments AT alessandrogiachino fullycharmedtetraquarkproductionatthelhcexperiments AT elenasantopinto fullycharmedtetraquarkproductionatthelhcexperiments |