Abstract
We propose a novel phenomenological model of mean transverse momentum fluctuations based on the geometrical scaling hypothesis. Bose–Einstein correlations between two gluons generated from an identical color flux tube are taken into account as a source of the fluctuation. We calculate an event-by-event fluctuation measure and show that ALICE data observed at TeV for p+p collisions are reproduced. By fitting our model to the experimental data, we evaluate the transverse size of the color flux tube as a function of the multiplicity.
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