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Two-particle Bose-Einstein correlations in pp collisions at root s=0.9 and 7 TeV measured with the ATLAS detector
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
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Number of Authors: 2893
2015 (English)In: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 75, no 10, 466Article in journal (Refereed) Published
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Abstract [en]

The paper presents studies of Bose-EinsteinCorrelations (BEC) for pairs of like-sign charged particles measured in the kinematic range p(T) > 100 MeV and |eta| < 2.5 in proton-proton collisions at centre-of-mass energies of 0.9 and 7 TeV with the ATLAS detector at the CERN Large Hadron Collider. The integrated luminosities are approximately 7 mu b(-1), 190 mu b(-1) and 12.4 nb(-1) for 0.9 TeV, 7 TeV minimum-bias and 7 TeV high-multiplicity data samples, respectively. The multiplicity dependence of the BEC parameters characterizing the correlation strength and the correlation source size are investigated for charged-particle multiplicities of up to 240. A saturation effect in the multiplicity dependence of the correlation source size parameter is observed using the high-multiplicity 7 TeV data sample. The dependence of the BEC parameters on the average transverse momentum of the particle pair is also investigated.

Place, publisher, year, edition, pages
Springer, 2015. Vol. 75, no 10, 466
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Physical Sciences
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URN: urn:nbn:se:kth:diva-180663DOI: 10.1140/epjc/s10052-015-3644-xISI: 000366309300001Scopus ID: 2-s2.0-84948982090OAI: oai:DiVA.org:kth-180663DiVA: diva2:895700
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QC 20160119

Available from: 2016-01-19 Created: 2016-01-19 Last updated: 2016-01-19Bibliographically approved

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Jovicevic, JelenaKuwertz, EmmaLund-Jensen, BengtMorley, AnthonyStrandberg, Jonas
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