Speaker
Tim Schuster
(Yale University (US))
Description
Two-particle correlation studies in high-multiplicity p--Pb collisions
at $\sqrt{s_{\mathrm{NN}}} = 5.02~\mathrm{TeV}$ have revealed a long-range
correlation pattern underneath the expected jet correlations. This symmetric
double-ridge pattern extends to large pseudorapidity difference. Long-range
correlations were also observed in pp collisions with extreme multiplicity at
LHC energies. The qualitative resemblance of the ridges in pp and p--Pb to
flow-like correlations in Pb--Pb collisions still challenges our
understanding of the small collision systems. Current explanations attribute
the collective effects to initial state saturation and hydrodynamic behavior
of dense matter created in the collisions.
Saturation effects in p--Pb are expected to be enhanced in the low-x
regime of the nucleus that can be probed at forward rapidities. The ALICE
muon spectrometer with its forward pseudorapidity coverage can be used to
detect charged tracks in the range $-4<\eta<-2.5$. Correlations between
these forward tracks and particles detected at midrapidity are used to study
the pseudorapidity dependence of the double ridge.
| On behalf of collaboration: | ALICE |
|---|
Primary author
Tim Schuster
(Yale University (US))
