Towards higher-order calculations of quarkonia production with $$k_T$$ k T -factorization: P-wave charmonia
Abstract Inclusive P-wave charmonia production in hadronic collisions at high energies is discussed in the framework of non-relativistic QCD and $$k_T$$ k T -factorization formalism. We present two consistent approaches to merge the usual leading order $$k_T$$ k T -factorization calculations with tr...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2024-04-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-024-12690-0 |
| _version_ | 1827242036726595584 |
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| author | S. P. Baranov A. V. Lipatov A. A. Prokhorov X. Chen |
| author_facet | S. P. Baranov A. V. Lipatov A. A. Prokhorov X. Chen |
| author_sort | S. P. Baranov |
| collection | DOAJ |
| description | Abstract Inclusive P-wave charmonia production in hadronic collisions at high energies is discussed in the framework of non-relativistic QCD and $$k_T$$ k T -factorization formalism. We present two consistent approaches to merge the usual leading order $$k_T$$ k T -factorization calculations with tree-level next-to-leading order off-shell amplitudes. Using these prescriptions, we extracted long-distance matrix elements for $$\chi _c$$ χ c mesons from a combined fit to available Tevatron and LHC data. In contrast to previous (leading order) calculations, our fits do not rule out the equalness of the color singlet wave functions of $$\chi _{c1}$$ χ c 1 and $$\chi _{c2}$$ χ c 2 states. The extracted values of long-distance matrix elements are employed to analyse the $$\chi _c$$ χ c polarization data reported recently by the CMS Collaboration. Our predictions are in a reasonably good agreement with the Tevatron and LHC measurements within the theoretical and experimental uncertainties. |
| first_indexed | 2024-04-24T12:35:50Z |
| format | Article |
| id | doaj.art-201286fa9daf41239df7357fc3460d6a |
| institution | Directory Open Access Journal |
| issn | 1434-6052 |
| language | English |
| last_indexed | 2025-03-21T21:50:00Z |
| publishDate | 2024-04-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj.art-201286fa9daf41239df7357fc3460d6a2024-05-26T11:30:17ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522024-04-0184411610.1140/epjc/s10052-024-12690-0Towards higher-order calculations of quarkonia production with $$k_T$$ k T -factorization: P-wave charmoniaS. P. Baranov0A. V. Lipatov1A. A. Prokhorov2X. Chen3P.N. Lebedev Institute of PhysicsSkobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State UniversityJoint Institute for Nuclear ResearchInstitute of Modern Physics, Chinese Academy of SciencesAbstract Inclusive P-wave charmonia production in hadronic collisions at high energies is discussed in the framework of non-relativistic QCD and $$k_T$$ k T -factorization formalism. We present two consistent approaches to merge the usual leading order $$k_T$$ k T -factorization calculations with tree-level next-to-leading order off-shell amplitudes. Using these prescriptions, we extracted long-distance matrix elements for $$\chi _c$$ χ c mesons from a combined fit to available Tevatron and LHC data. In contrast to previous (leading order) calculations, our fits do not rule out the equalness of the color singlet wave functions of $$\chi _{c1}$$ χ c 1 and $$\chi _{c2}$$ χ c 2 states. The extracted values of long-distance matrix elements are employed to analyse the $$\chi _c$$ χ c polarization data reported recently by the CMS Collaboration. Our predictions are in a reasonably good agreement with the Tevatron and LHC measurements within the theoretical and experimental uncertainties.https://doi.org/10.1140/epjc/s10052-024-12690-0 |
| spellingShingle | S. P. Baranov A. V. Lipatov A. A. Prokhorov X. Chen Towards higher-order calculations of quarkonia production with $$k_T$$ k T -factorization: P-wave charmonia European Physical Journal C: Particles and Fields |
| title | Towards higher-order calculations of quarkonia production with $$k_T$$ k T -factorization: P-wave charmonia |
| title_full | Towards higher-order calculations of quarkonia production with $$k_T$$ k T -factorization: P-wave charmonia |
| title_fullStr | Towards higher-order calculations of quarkonia production with $$k_T$$ k T -factorization: P-wave charmonia |
| title_full_unstemmed | Towards higher-order calculations of quarkonia production with $$k_T$$ k T -factorization: P-wave charmonia |
| title_short | Towards higher-order calculations of quarkonia production with $$k_T$$ k T -factorization: P-wave charmonia |
| title_sort | towards higher order calculations of quarkonia production with k t k t factorization p wave charmonia |
| url | https://doi.org/10.1140/epjc/s10052-024-12690-0 |
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