Femtoscopic signature of strong radial flow in high-multiplicity $pp$ collisions

Abstract

Hydrodynamic simulations are used to calculate the identical pion HBT radii, as a function of the pair momentum $k_{\mathrm{T}}$. This dependence is sensitive to the magnitude of the collective radial flow in the transverse plane, and thus comparison to ALICE data enables us to derive its magnitude. By using hydro solutions with variable initial parameters we conclude that in this case fireball explosions start with a very small initial size, well below 1 $\mathrm{fm}$.

8 pages, 11 figures; published version

References in corpus (3)

• Resolving the HBT Puzzle in Relativistic Heavy Ion Collision
• Freeze-out radii extracted from three-pion cumulants in pp, p-Pb and Pb-Pb collisions at the LHC
• Indication of transverse radial flow in high-multiplicity proton-proton collisions at the Large Hadron Collider

Cited by in corpus (13)

• Electromagnetic fields and anomalous transports in heavy-ion collisions --- A pedagogical review
• Heavy Ion Collisions: Achievements and Challenges
• Phenomenological Review on Quark-Gluon Plasma: Concepts vs. Observations
• Experimental overview on small collision systems at the LHC
• Event-by-event distribution of magnetic field energy over initial fluid energy density in $\sqrt{s_{\mathrm{NN}}}$= 200 GeV Au-Au collisions
• Finite-volume effects on phase transition in the Polyakov-loop extended Nambu-Jona-Lasinio model with a chiral chemical potential
• One particle distribution function and shear viscosity in magnetic field: a relaxation time approach
• One-dimensional charged kaon femtoscopy in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV
• Hanbury Brown--Twiss Interferometry and Collectivity in Small Systems
• Quasi equilibrium state of expanding quantum fields and two-pion Bose-Einstein correlations in $pp$ collisions at the LHC
• Quantum canonical ensemble and correlation femtoscopy at fixed multiplicities
• A combined model for pseudorapidity distributions in Cu-Cu collisions at BNL-RHIC energies
• A combined model for the pseudorapidity distributions in p-p collisions at center-of-mass energies from 23.6 to 7000 GeV