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Open AccessFeature PaperArticle

Femtoscopy with Identified Hadrons in pp, pPb, and PbPb Collisions in CMS

Wigner RCP, P.O.B. 49, H-1525 Budapest, Hungary
BGL17: 10th Bolyai-Gauss-Lobachevsky Conference.
Universe 2017, 3(4), 76; https://doi.org/10.3390/universe3040076
Received: 11 October 2017 / Revised: 25 October 2017 / Accepted: 31 October 2017 / Published: 8 November 2017
Short-range correlations of identified charged hadrons in pp ( s = 0.9, 2.76, and 7 TeV), pPb ( s NN = 5.02 TeV), and peripheral PbPb collisions ( s NN = 2.76 TeV) are studied with the CMS detector at the LHC. Charged pions, kaons, and protons at low momentum and in laboratory pseudorapidity | η | < 1 are identified via their energy loss in the silicon tracker. The two-particle correlation functions show effects of quantum statistics, Coulomb interaction, and also indicate the role of multi-body resonance decays and mini-jets. The characteristics of the one-, two-, and three-dimensional correlation functions are studied as a function of transverse pair momentum, k T , and the charged-particle multiplicity of the event. The extracted radii are in the range 1–5 fm, reaching highest values for very high multiplicity pPb, also for similar multiplicity PbPb collisions, and decrease with increasing k T . The dependence of radii on multiplicity and k T largely factorizes and appears to be insensitive to the type of the colliding system and center-of-mass energy. View Full-Text
Keywords: femtoscopy; Bose–Einstein correlations; nuclear collisions femtoscopy; Bose–Einstein correlations; nuclear collisions
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MDPI and ACS Style

Siklér, F. Femtoscopy with Identified Hadrons in pp, pPb, and PbPb Collisions in CMS. Universe 2017, 3, 76.

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