Effect of rope hadronization on strangeness enhancement in p-p collisions at LHC energies

The p-p collisions at high multiplicity at LHC show small scale collective effects similar to that observed in heavy ion collisions such as enhanced production of strange and multistrange hadrons, long range azimuthal correlations, etc. The observation of strangeness enhancement in p-p collisions at s=7 TeV and 13 TeV as measured by the ALICE experiment is explored using the pythia8 event generator within the framework of microscopic rope hadronization model which assumes the formation of ropes due to overlapping of strings in high multiplicity environment. The transverse momentum (pT) spectra shape and its hardening with multiplicity is well described by the model. The mechanism of formation of ropes with QCD-based color reconnections also described the observed experimental strangeness enhancement for higher multiplicity classes in p-p collisions at s=7 TeV and 13 TeV. The enhancement with multiplicity is further investigated by studying the mean pT («pT») and the integrated yields («dN/dy») of strange and multistrange hadrons and comparing the predictions to the measured data at LHC for 7 TeV and 13 TeV.