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Pseudorapidity distributions of all primary charged particles produced in p+pcollisions at various Relativistic Heavy Ion Collider (RHIC) and Large HadronCollider (LHC) energies using UrQMD-3.4 and PYTHIA8.2-generated events areestimated and compared with the existing results of UA5 and ALICEcollaborations. With both the sets of generated data, the variation of rapiditywidths with the rest masses of different mesons and baryons of p+p collisionsat various Super Proton Synchrotron (SPS) and LHC energies are presented. Anincrease in the width of the rapidity distribution of lambda, similar toheavy-ion data, could be seen in p+p collisions as well from SPS to the LHCenergies (up to {sqrt_s} =13 TeV) when the entire rapidity space is considered,indicating its universal feature both in p+p and A+A collisions. The genesis ofthe increased width of rapidity distribution of Lambda in p+p collision isfound to be in the production of light flavored quarks and diquarks from thespectator partons of the colliding hadrons resulting {lambda}/{anti_lambda}>1at the extreme rapidities of the studied p+p collisions. At the LHC energiesfor central p+p collision, when there is no spectator partons, the rapiditywidth of {lambda} is found to take the same Gaussian shape as that of lambdaand the widths of both the distributions become the same confirming nonon-trivial contribution to the rapidity width of {lambda} as seen in heavy-ionand non-central p+p collisions.

Spectator partons contribution in the rapidity width of lamda in p+p collisions at various SPS and LHC energies