How many of the scaling trends in pp collisions will be violated at root s(NN)=14 TeV? Predictions from Monte Carlo quark-gluon string model

作者：Bleibel J; Bravina L V; Zabrodin E E

来源：PHYSICAL REVIEW D, 2016, 93(11): 114012.

DOI：10.1103/PhysRevD.93.114012

Multiplicity, rapidity and transverse momentum distributions of hadrons produced both in inelastic and nondiffractive pp collisions at energies from root s = 200 GeV to 14 TeV are studied within the Monte Carlo quark-gluon string model. Good agreement with the available experimental data up to root s = 13 TeV is obtained, and predictions are made for the collisions at top LHC energy root s = 14 TeV. The model indicates that Feynman scaling and extended longitudinal scaling remain valid in the fragmentation regions, whereas strong violation of Feynman scaling is observed at midrapidity. The Koba-Nielsen-Olesen (KNO) scaling in multiplicity distributions is violated at LHC also. The origin of both maintenance and violation of the scaling trends is traced to short range correlations of particles in the strings and interplay between the multistring processes at ultrarelativistic energies.

• 出版日期2016-6-10