Speaker
Dr
Grigory Feofilov
(V. Fock Institute for Physics of Saint-Petersburg State University)
Description
In pp collisions at the LHC, collective effects due to colour-string interactions (screening/annealing/fusion/percolation are the mechanisms proposed by different models) could take place, resulting in the appearance of the so-called long-range correlations. In the present work long-range correlations are studied in an event-by-event charged particle analysis, performed on MC PYTHIA simulations for pp collisions at Fermilab and LHC energies.
Two parameter sets corresponding to different contributions of gluon string formation and fusion processes are used. The results are compared to the available experimental data and predictions for ALICE at the LHC are discussed. It is also shown that the long-range correlations, obtained in pp collisions using charged particle multiplicity and/or transverse momentum information in two separate rapidity intervals, allow the definition of a specific type of pp events that might be characterized as ”very central”. In such events, particle emitting sources with maximal energy density, corresponding to clusters of fused strings, may be formed.
Primary author
Dr
Grigory Feofilov
(V. Fock Institute for Physics of Saint-Petersburg State University)
Co-authors
A. Asryan
A. Grebenyuk
A. Ivanov
P. Naumenko
V. Vechernin
