Deciphering nonfemtoscopic two-pion correlations in $p+p$ collisions with simple analytical models

Abstract

A simple model of nonfemtoscopic particle correlations in proton-proton collisions is proposed. The model takes into account correlations induced by the conservation laws as well as correlations induced by minijets. It reproduces well the two-pion nonfemtoscopic correlations of like-sign and unlike-sign pions in proton-proton collision events at $\sqrt{s}=900$ GeV analyzed by the ALICE Collaboration. We also argue that similar nonfemtoscopic correlations can appear in the hydrodynamic picture with event-by-event fluctuating nonsymmetric initial conditions that are typically associated with nonzero higher-order flow harmonics.

21 pages, 10 figures, misprints corrected

References in corpus (6)

• Higher harmonic anisotropic flow measurements of charged particles in Pb-Pb collisions at 2.76 TeV
• Measurements of Higher-Order Flow Harmonics in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Femtoscopy of pp collisions at $\sqrt{s}$=0.9 and 7 TeV at the LHC with two-pion Bose-Einstein correlations
• Evidence for Hydrodynamic Evolution in Proton-Proton Scattering at LHC Energies
• Global Conservation Laws and Femtoscopy of Small Systems
• Conservation Laws and the Multiplicity Evolution of Spectra at the Relativistic Heavy Ion Collider

Cited by in corpus (2)

• Correlation femtoscopy of small systems
• The transverse momentum dependence of charged kaon Bose-Einstein correlations in the SELEX experiment