1106.5120 (S. V. Akkelin et al.)

Deciphering non-femtoscopic two-pion correlations in $p+p$ collisions
with simple analytical models    [PDF]

S. V. Akkelin, Yu. M. Sinyukov

A simple model of non-femtoscopic 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 non-femtoscopic 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 the similar
non-femtoscopic correlations could appear in hydrodynamic picture with
event-by-event fluctuating non-symmetric initial conditions that are typically
associated with non-zero higher-order flow harmonics.

View original: http://arxiv.org/abs/1106.5120