Publisher correction: Observation of triple J/ψ meson production in proton-proton collisions
File(s)s41567-023-01992-x.pdf (636.98 KB)
Published version
Author(s)
Type
Journal Article
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 signifcance above
fve standard deviations. We measured the inclusive fducial cross-section to
be 272+141
−104 (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.
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 signifcance above
fve standard deviations. We measured the inclusive fducial cross-section to
be 272+141
−104 (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.
Date Issued
2023-03
Date Acceptance
2022-10-14
Citation
Nature Physics, 2023, 19 (3), pp.461-461
ISSN
1745-2473
Publisher
Nature Research
Start Page
461
End Page
461
Journal / Book Title
Nature Physics
Volume
19
Issue
3
Copyright Statement
© The Author(s) 2023 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
License URL
Identifier
https://doi.org/10.1038/s41567-023-01992-x
Publication Status
Published
Article Number
461
Date Publish Online
2023-02-27