Home > Research > Publications & Outputs > Observation and studies of double $J/$$ product...

Electronic data

  • PhysRevD.90.111101

    Rights statement: © 2014 American Physical Society

    Final published version, 458 KB, PDF document

    Available under license: CC BY-NC: Creative Commons Attribution-NonCommercial 4.0 International License


Text available via DOI:

View graph of relations

Observation and studies of double $J/$$ production at the Tevatron

Research output: Contribution to Journal/MagazineJournal articlepeer-review

  • D0 Collaboration
Article number111101
<mark>Journal publication date</mark>1/12/2014
<mark>Journal</mark>Physical Review D
Issue number1
Number of pages9
Publication StatusPublished
<mark>Original language</mark>English


We present the observation of doubly produced J/ψ mesons with the D0 detector at Fermilab in pp¯ collisions at s√=1.96  TeV. The production cross section for both singly and doubly produced J/ψ mesons is measured using a sample with an integrated luminosity of 8.1  fb−1. For the first time, the double J/ψ production cross section is separated into contributions due to single and double parton scatterings. Using these measurements, we determine the effective cross section σeff, a parameter characterizing an effective spatial area of the parton-parton interactions and related to the parton spatial density inside the nucleon.

Bibliographic note

© 2014 American Physical Society