Journal article
Measurement of the prompt J/ ψ pair production cross-section in pp collisions at √s=8 TeV with the ATLAS detector
The European physical journal. C, Particles and fields, Vol.77(2), 76
2017
DOI: 10.1140/epjc/s10052-017-4644-9
PMID: 28331429
Abstract
The production of two prompt J/ ψ mesons, each with transverse momenta pT> 8.5 GeV and rapidity |y| < 2.1 , is studied using a sample of proton-proton collisions at s=8 TeV, corresponding to an integrated luminosity of 11.4 fb- 1 collected in 2012 with the ATLAS detector at the LHC. The differential cross-section, assuming unpolarised J/ ψ production, is measured as a function of the transverse momentum of the lower-pTJ/ ψ meson, di-J/ ψpT and mass, the difference in rapidity between the two J/ ψ mesons, and the azimuthal angle between the two J/ ψ mesons. The fraction of prompt pair events due to double parton scattering is determined by studying kinematic correlations between the two J/ ψ mesons. The total and double parton scattering cross-sections are compared with predictions. The effective cross-section of double parton scattering is measured to be σeff= 6.3 ± 1.6 (stat) ± 1.0 (syst) mb. © 2017, CERN for the benefit of the ATLAS collaboration.
Details
- Title: Subtitle
- Measurement of the prompt J/ ψ pair production cross-section in pp collisions at √s=8 TeV with the ATLAS detector
- Creators
- M Aaboud - Premier UniversityG Aad - Aix-Marseille UniversitéB Abbott - University of OklahomaJ Abdallah - University of Texas at ArlingtonO Abdinov - Azerbaijan National Academy of SciencesB Abeloos - Université Paris-SaclayTorsten Åkesson - Particle PhysicsSimona Bocchetta - Lund UniversityLENE Bryngemark - Lund UniversityCaterina Doglioni - Particle PhysicsVincent Hedberg - Particle PhysicsGöran Jarlskog - Particle PhysicsElse Lytken - Particle PhysicsUlf Mjörnmark - Particle PhysicsOxana Smirnova - Particle PhysicsOleksandr Viazlo - Particle PhysicsATLAS Collaboration
- Contributors
- U Mallik (Contributor) - University of Iowa, Physics and Astronomy
- Resource Type
- Journal article
- Publication Details
- The European physical journal. C, Particles and fields, Vol.77(2), 76
- DOI
- 10.1140/epjc/s10052-017-4644-9
- PMID
- 28331429
- NLM abbreviation
- Eur Phys J C Part Fields
- ISSN
- 1434-6044
- eISSN
- 1434-6052
- Publisher
- Springer
- Language
- English
- Date published
- 2017
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984200033302771
Metrics
15 Record Views