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

【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 GeV≤kT≤1.0 GeV and six intervals described by the reconstructed charged-particle multiplicity as Ntrkoffline. 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. Analyses of data at 7 TeV are added for comparisons with results at 13 TeV.

【Author】
Takuya Mizoguchi, Seiji Matsumoto, Minoru Biyajima

【Journal】
Physical Review D(IF：4.4) Time：2023-09-20