2017/08/31 by LHCb collaboration, R. Aaij, B. Adeva +814 · 1 citation
Physics and Astronomy · #Charged particle #Geometry #High-Energy Particle Collisions Research #Impact parameter #Ion #Multiplicity (mathematics) #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Pion #Proton #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #RADIUS #Sign (mathematics) #hep-ex
paper · pdf · doi:10.1007/jhep12(2017)025
published as JHEP 1711 (2017) 030 · 29 pages, 7 figures, 85 references; All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2017-020.html
openalex created_date 2017/09/15 · openalex publication_date 2017/12/01 · arxiv created 2017/12/21 · arxiv updated 2017/12/22 · openalex updated_date 2026/08/06
Bose-Einstein correlations of same-sign charged pions, produced in protonproton collisions at a 7 TeV centre-of-mass energy, are studied using a data sample collected by the LHCb experiment. The signature for Bose-Einstein correlations is observed in the form of an enhancement of pairs of like-sign charged pions with small four-momentum difference squared. The charged-particle multiplicity dependence of the Bose-Einstein correlation parameters describing the correlation strength and the size of the emitting source is investigated, determining both the correlation radius and the chaoticity parameter. The measured correlation radius is found to increase as a function of increasing charged-particle multiplicity, while the chaoticity parameter is seen to decrease.