Bose-Einstein Correlations in a Fluid Dynamical Scenario for Proton-Proton Scattering at 7 TeV

Abstract

Using a fluid dynamical scenario for $pp$ scattering at 7 TeV, we compute correlation functions for ${\pi }^{+}{\pi }^{+}$ pairs. Femtoscopic radii are extracted based on three-dimensional parametrizations of the correlation functions. We study the radii as a function of the transverse momenta of the pairs, for different multiplicity classes, corresponding to recent experimental results from ALICE. We find the same decrease of the radii with $k_T$, more and more pronounced with increasing multiplicity, but absent for the lowest multiplicities. In the model we understand this as transition from string expansion (low multiplicity) towards a three-dimensional hydrodynamical expansion (high multiplicity).

Cited by in corpus (5)

• Experimental equation of state in proton-proton and proton-antiproton collisions and phase transition to quark gluon plasma
• Charged kaon femtoscopic correlations in pp collisions at $\sqrt{s}=7$ TeV
• K${}_s^0$K${}_s^0$ correlations in pp collisions at $\sqrt{s}=7$ TeV from the LHC ALICE experiment
• One-dimensional charged kaon femtoscopy in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Formation time dependence of femtoscopic $\pi \pi$ correlations in p+p collisions at $\sqrt{s_{NN}}$=7 TeV