IFLP   13074
INSTITUTO DE FISICA LA PLATA
Unidad Ejecutora - UE
artículos
Título:
Two-particle Bose?Einstein correlations in pp collisions at s√= 0.9 and 7 TeV measured with the ATLAS detector
Autor/es:
F. MONTICELLI; ATLAS CLLABORATION
Revista:
EUROPEAN PHYSICAL JOURNAL C - PARTICLES AND FIELDS
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2015 vol. 1 p. 1 - 20
ISSN:
1434-6044
Resumen:
The paper presents studies of Bose?Einstein Correlations (BEC) for pairs of like-sign charged particles measured in the kinematic range pT>  100 MeV and |η|<  2.5 in 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  \upmu b−1 , 190  \upmu 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.