Multiplicity dependence of two-particle azimuthal correlations in pp collisions at the LHC

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900 GeV
2.76 TeV
7 TeV
Abstract Plain Text: 

We present the measurements of particle pair yields per trigger particle obtained from di-hadron azimuthal
correlations in pp collisions at $\sqrt{s}$ = 0.9, 2.76, and 7 TeV recorded with the ALICE detector.
The yields are studied as a function of the charged particle multiplicity. Taken together with the single
particle yields the pair yields provide information about parton fragmentation at low transverse
momenta, as well as on the contribution of multiple parton interactions to particle production. Data
are compared to calculations using the PYTHIA6, PYTHIA8, and PHOJET event generators.