Two-component model description of Bose-Einstein correlations in pp collisions at 13 TeV measured by the CMS Collaboration at the LHC

2023/03/31 by Takuya Mizoguchi, Seiji Matsumoto, Mizoguchi, Takuya +3
Physics and Astronomy · #Cosmology and Gravitation Theories #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies

paper · pdf · doi:10.48550/arxiv.2303.17763

openalex publication_date 2023/03/31 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Using the two-component model, we analyze Bose-Einstein correlations in pp collisions at the center-of-mass energy of 13 TeV, measured by the CMS Collaboration at the LHC, and compare results with the τ-model. We utilize data described by the double ratios with an average pair transverse momentum 0≤ k_T≤ 1.0 GeV and six intervals described by the reconstructed charged particle multiplicity as N_{\rm trk}^{\rm offline}. The estimated ranges are 1-4 fm for the magnitude of extension of emitting source expressed by the exponential function exp(-RQ) and 0.4-0.5 fm for that by the Gaussian distribution exp(-(RQ)²)), respectively. Moreover, we estimate the upper limits of the 3-pion BEC to test the two-component model and investigate the role of the long-range correlation.

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