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Bose-Einstein correlations of same-sign charged pions in the forward region in pp collisions at √s = 7 TeV

Author(s)
LHCB Collaboration; Boettcher, Thomas Julian; Craik, Daniel C; Ilten, Philip J; Williams, Michael
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Abstract
Bose-Einstein correlations of same-sign charged pions, produced in proton-proton 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. Keywords: Hadron-Hadron scattering (experiments); Particle correlations and fluctuations; QCD
Date issued
2017-12
URI
http://hdl.handle.net/1721.1/117216
Department
Massachusetts Institute of Technology. Department of Physics
Journal
Journal of High Energy Physics
Publisher
Springer Berlin Heidelberg
Citation
Aaij, R. et al. “Bose-Einstein correlations of same-sign charged pions in the forward region in pp collisions at √s = 7 TeV.” Journal of High Energy Physics 2017, 12 (December 2017): 25 © 2017 The Author(s)
Version: Final published version
ISSN
1029-8479

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