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

, D0 Collaboration (2014) Observation and studies of double $J/$$ production at the Tevatron. Physical Review D, 90 (1). ISSN 1550-7998

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Abstract

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.

Item Type:
Journal Article
Journal or Publication Title:
Physical Review D
Additional Information:
© 2014 American Physical Society
ID Code:
72138
Deposited By:
Deposited On:
15 Dec 2014 09:04
Refereed?:
Yes
Published?:
Published
Last Modified:
02 Dec 2020 02:13