Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.13091/4232
Title: | Observation of triple J/psi meson production in proton-proton collisions | Authors: | Tumasyan, A. Adam, W. Andrejkovic, J. W. Bergauer, T. Chatterjee, S. Damanakis, K. Dragicevic, M. |
Keywords: | Double Parton Interactions P(P)Over-Bar Collisions Matrix-Element Jet Events Helac-Onia Scatterings Generator Pp |
Publisher: | Nature Portfolio | 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/psi 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/psi 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/psi 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. | Description: | Article; Early Access | URI: | https://doi.org/10.1038/s41567-022-01838-y https://hdl.handle.net/20.500.13091/4232 |
ISSN: | 1745-2473 1745-2481 |
Appears in Collections: | Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections |
Files in This Item:
File | Size | Format | |
---|---|---|---|
s41567-022-01838-y.pdf | 2.14 MB | Adobe PDF | View/Open |
CORE Recommender
WEB OF SCIENCETM
Citations
1
checked on Jul 27, 2024
Page view(s)
50
checked on Jul 22, 2024
Download(s)
24
checked on Jul 22, 2024
Google ScholarTM
Check
Altmetric
Items in GCRIS Repository are protected by copyright, with all rights reserved, unless otherwise indicated.