Szczegóły publikacji
Opis bibliograficzny
Observation of triple $J/\Psi$ meson production in proton-proton collisions / A. Tumasyan, [et al.], V. AVATI, L. GRZANKA, M. MALAWSKI, [et al.] // Nature Physics ; ISSN 1745-2473. — 2023 — vol. 19 iss. 3, s. 338–350. — Bibliogr. s. 342–344, [351–352], Abstr. — Publikacja dostępna online od: 2023-01-19. --- Errata: Publisher Correction: Observation of triple J/ψ meson production in proton-proton collisions // Nature Physics. - 2023, vol. 19, art. no. 461. --- Pełny tekst: https://www.nature.com/articles/s41567-023-01992-x.pdf
Autorzy (2371)
- AGHAvati Valentina
- AGHGrzanka Leszek
- AGHMalawski Maciej
- Tumasyan Armen
Dane bibliometryczne
| ID BaDAP | 150303 |
|---|---|
| Data dodania do BaDAP | 2024-01-08 |
| Tekst źródłowy | URL |
| DOI | 10.1038/s41567-022-01838-y |
| Rok publikacji | 2023 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Nature Physics |
Abstract
Protons consist of three valence quarks, two up-quarks and one down-quark, held together by gluons and a sea of quark-antiquark pairs. Collectively, quarks and gluons are referred to as partons. In a proton-proton collision, typically only one parton of each proton undergoes a hard scattering – referred to as single-parton scattering – leaving the remainder of each proton only slightly disturbed. Here, we report the study of double- and triple-parton scatterings through the simultaneous production of three J/ψ mesons, which consist of a charm quark-antiquark pair, in proton-proton collisions recorded with the CMS experiment at the Large Hadron Collider. We observed this process – reconstructed through the decays of J/ψ mesons into pairs of oppositely charged muons – with a statistical significance above five standard deviations. We measured the inclusive fiducial cross-section to be 272−104+141(stat)±17(syst)fb, and compared it to theoretical expectations for triple-J/ψ meson production in single-, double- and triple-parton scattering scenarios. Assuming factorization of multiple hard-scattering probabilities in terms of single-parton scattering cross-sections, double- and triple-parton scattering are the dominant contributions for the measured process.