Measurement of the prompt J/psi pair production cross-section in pp collisions at root s=8 TeV with the ATLAS detector
- NázevTitle
- Measurement of the prompt J/psi pair production cross-section in pp collisions at root s=8 TeV with the ATLAS detectorMeasurement of the prompt J/psi pair production cross-section in pp collisions at root s=8 TeV with the ATLAS detector
- Druh výsledkuResult type
- Článek v časopiseJournal article
- AutořiAuthors
- M. Aaboud, G. Aad, B. Abbott, J. Abdallah, B. Ali, K. Augsten, D. Caforio, P. Gallus, Z. Hubáček, M. Myška, S. Pospíšil, F. Seifert, V. Šimák, T. Slavíček, K. Smolek, M. Solar, A. Sopczak, V. Sopko, M. Suk, V. Vacek, M. Šuta, P. Vokáč, M. Zeman
- Klíčová slovaKeywords
- double parton scattering, psi-psi-production, octet quarkonia production, high-energy colliders, heavy-quarkonium, hadronic production, matrix-element, helac-onia, hadroproduction, distributions
- ExperimentCollaboration
- ATLAS
- DOIDOI
- 10.1140/epjc/s10052-017-4644-9
- Časopis / citaceJournal / citation
- The European Physical Journal C 77(2), 76 (2017) · ISSN 1434-6044
- RokYear
- 2017
- JazykLanguage
- eng
- ZáznamyRecords
- ProjektProject
- Základní výzkum fyziky vysokých energií v mezinárodním experimentu ATLAS na hadronovém urychlovači LHC v laboratoři CERN.Fundamental research in the field of high energy physics in the ATLAS experiment at the hadron collider LHC at CERN laboratory.; Získávání nových poznatků o mikrosvětě v infrastruktuře CERNAcquiring new pieces of knowledge about micro-world in CERN research infrastructure; Zkoumání mikrosvěta s využitím infrastruktury CERNInvestigation of the Microworld using the CERN Infrastructure
- CitovánoCited by
- 162 (INSPIRE-HEP)
- Citace ke staženíDownload citation
- TXT · BibTeX
AbstraktAbstract
The production of two prompt J/psi mesons, each with transverse momenta p(T) > 8.5 GeV and rapidity vertical bar y vertical bar < 2.1, is studied using a sample of proton-proton collisions at root 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/psi production, is measured as a function of the transverse momentum of the lower-p(T) J/psi meson, di-J/psi p(T) and mass, the difference in rapidity between the two J/psi mesons, and the azimuthal angle between the two J/psi mesons. The fraction of prompt pair events due to double parton scattering is determined by studying kinematic correlations between the two J/psi 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 sigma(eff) = 6.3 +/- 1.6(stat) +/- 1.0(syst) mb.
The production of two prompt J/psi mesons, each with transverse momenta p(T) > 8.5 GeV and rapidity vertical bar y vertical bar < 2.1, is studied using a sample of proton-proton collisions at root 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/psi production, is measured as a function of the transverse momentum of the lower-p(T) J/psi meson, di-J/psi p(T) and mass, the difference in rapidity between the two J/psi mesons, and the azimuthal angle between the two J/psi mesons. The fraction of prompt pair events due to double parton scattering is determined by studying kinematic correlations between the two J/psi 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 sigma(eff) = 6.3 +/- 1.6(stat) +/- 1.0(syst) mb.