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The mid-rapidity transverse momentum spectra of hadrons (p, p-bar, K+, K-,K0-short, phi, {\Lambda}, {\Lambda}-bar, {\Xi},{\Xi}-bar, ({\Xi} + {\Xi}-bar),{\Omega}, and {\Omega}-bar) and the available rapidity distributions of thestrange hadrons K0-short, ({\Lambda} + {\Lambda}-bar), ({\Xi} + {\Xi}-bar)produced in p-p collisions at LHC energy root(sNN) = 0.9 TeV have been studiedusing a Unified Statistical Thermal Freeze-out Model (USTFM). The calculatedresults are found to be in good agreement with the experimental data. Thetheoretical fits of the transverse momentum spectra using the modelcalculations provide the thermal freeze-out conditions in terms of thetemperature and collective flow parameters for different hadronic species. Thestudy reveal the presence of significant collective flow and a well definedtemperature in the system thus indicating the formation of a thermallyequilibrated hydrodynamic system in p-p collisions at LHC. Moreover, the fitsto the available experimental rapidity distributions data of strange hadronsshow the effect of almost complete transparency in p-p collisions at LHC. Themodel incorporates longitudinal as well as a transverse hydrodynamic flow. Thecontributions from heavier decay resonances have also been taken into account.We have also imposed the criteria of exact strangeness conservation in thesystem.

Particle multiplicity distributions in p-p Collisions at root(sNN) = 0.9 TeV